WO2021039412A1 - Faisceau de fils - Google Patents

Faisceau de fils Download PDF

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Publication number
WO2021039412A1
WO2021039412A1 PCT/JP2020/030743 JP2020030743W WO2021039412A1 WO 2021039412 A1 WO2021039412 A1 WO 2021039412A1 JP 2020030743 W JP2020030743 W JP 2020030743W WO 2021039412 A1 WO2021039412 A1 WO 2021039412A1
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WO
WIPO (PCT)
Prior art keywords
core wire
tip
wire
retention
wire harness
Prior art date
Application number
PCT/JP2020/030743
Other languages
English (en)
Japanese (ja)
Inventor
宏介 蓮井
能章 山野
望月　泰志
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2021039412A1 publication Critical patent/WO2021039412A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • 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
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors

Definitions

  • This disclosure relates to wire harnesses.
  • a wire harness there is a wire harness in which a terminal is connected to the tip of a core wire protruding from the tip of an insulating film.
  • the core wire and the terminal are made of different types of metal, and the terminal is plated to suppress corrosion (see, for example, Patent Document 1).
  • galvanic corrosion can be suppressed without using a heat shrink tube or the like.
  • the wire harness plated with corrosion suppression plating as described above is effective in suppressing galvanic corrosion, but further suppression of galvanic corrosion is desired.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a wire harness capable of suppressing galvanic corrosion.
  • the wire harness of the present disclosure is made of an electric wire having a core wire made of a first metal material and a second metal material of a type different from the core wire, and has a connecting portion to which a side surface at a tip portion of the core wire is connected.
  • the wire harness provided with the terminal is provided with a retention suppressing portion for suppressing the retention of liquid over the tip surface of the core wire and the connection surface of the connection portion.
  • FIG. 1 is a side view of the wire harness in one embodiment.
  • FIG. 2 is a front view of the wire harness in one embodiment.
  • FIG. 3 is a front view of the wire harness in another example.
  • FIG. 4 is a front view of the wire harness in another example.
  • FIG. 5 is a side view of the wire harness in another example.
  • FIG. 6 is a side view of the wire harness in another example.
  • FIG. 7 is a front view of the wire harness in another example.
  • FIG. 8 is a side view of the wire harness in another example.
  • the wire harness of the present disclosure is [1] An electric wire having a core wire made of a first metal material and a terminal made of a second metal material different from the core wire and having a connecting portion to which a side surface at the tip end portion of the core wire is connected.
  • the wire harness provided includes a retention suppressing portion that suppresses the retention of liquid over the tip surface of the core wire and the connection surface of the connection portion.
  • the tip portion of the core wire includes a retention suppressing portion that suppresses the retention of the liquid over the tip surface of the core wire and the connection surface of the connection portion, the liquid stays in the portion. Is suppressed. Therefore, galvanic corrosion can be suppressed.
  • the retention suppressing portion preferably includes an inclined surface provided on the tip surface of the core wire.
  • the retention suppressing portion includes an inclined surface provided on the tip surface of the core wire, even if the liquid is about to accumulate over the tip surface of the core wire and the connecting surface of the connecting portion, the liquid will be retained by the inclined surface. It becomes easy to flow down at an early stage and the retention of liquid is suppressed.
  • the retention suppressing portion includes a groove recessed in the outer surface of the tip portion of the core wire and extending from the tip surface of the core wire.
  • the retention suppressing portion includes a groove recessed in the outer surface of the tip portion of the core wire and extending from the tip surface of the core wire, the liquid extends over the tip surface of the core wire and the connecting surface of the connecting portion. Even if the cable is about to accumulate, it is guided by the groove and the liquid easily flows down at an early stage, and the retention of the liquid is suppressed.
  • the groove is inclined with respect to the extending direction of the core wire.
  • the groove is inclined with respect to the extending direction of the core wire, the liquid easily flows down to the outside in the width direction of the core wire.
  • terminals are plated to prevent corrosion.
  • the terminals are plated to suppress corrosion, so galvanic corrosion can be further suppressed.
  • the wire harness 11 includes an electric wire 12 and a terminal 13, and the tip end side of the terminal 13 is connected to a battery or the like (not shown) provided in the engine room of the vehicle.
  • the electric wire 12 has a core wire 14 and an insulating film 15 that covers the core wire 14.
  • the core wire 14 is made of aluminum or an aluminum alloy as a first metal material.
  • the core wire 14 of the present embodiment is a stranded wire composed of a plurality of strands. Note that in FIGS. 1 and 2, the boundaries and gaps between the strands are not shown.
  • the terminal 13 is made of a metal plate material of copper or a copper alloy as a second metal material of a type different from that of the core wire 14.
  • the terminal 13 is nickel-plated as a corrosion-suppressing plating.
  • the terminal 13 includes a connecting portion 16 to which the core wire 14 of the electric wire 12 is connected, and a holding portion 18 provided from the connecting portion 16 via the connecting portion 17 and holding the electric wire 12.
  • the connecting portion 16 is formed in a flat plate shape, and one of the flat surfaces thereof is a connecting surface 16a connected to the core wire 14.
  • the side surface of the core wire 14 protruding from the tip of the insulating film 15 at the tip 14a is connected to the connection surface 16a of the connection 16.
  • the side surface of the tip portion 14a is a surface in a direction orthogonal to the extending direction of the core wire 14.
  • the tip portion 14a of the core wire 14 is connected and fixed to the connection surface 16a by ultrasonic welding while being crushed by being pressed against the connection surface 16a side by a jig (not shown) with its side surface mounted on the connection surface 16a. Has been done.
  • the holding portion 18 has a film facing portion 19 facing the insulating film 15 and a pair of gripping pieces 20 extending from the film facing portion 19 and holding the insulating film 15 so as to wrap around the insulating film 15.
  • the grip piece 20 is bent so as to wrap the insulating film 15 in a state where the tip portion 14a of the core wire 14 is connected to the connecting surface 16a of the connecting portion 16, and the electric wire 12 including the insulating film 15 is slightly moved to the film facing portion 19 side. Hold while crushing.
  • the tip side of the terminal 13 is connected to a battery or the like so that the tip side in the extending direction of the core wire 14 faces the antigravity direction.
  • the anti-gravity direction referred to here does not mean the anti-gravity direction in a strict sense, but is a direction having a width within a range in which the effect of the present embodiment is exhibited, such as an oblique anti-gravity direction.
  • the wire harness 11 has a film facing portion 19 having a step with the connecting portion 16 as a retention suppressing structure for suppressing the retention of liquid over the tip surface 15a of the insulating film 15 and the tip portion 14a of the core wire 14.
  • the step structure 21 is provided.
  • the connecting portion 17 connecting the connecting portion 16 and the film facing portion 19 is formed by bending in a direction away from the connecting surface 16a and the core wire 14, so that the connecting portion 17 and the film facing portion 19 are formed.
  • the structure is such that the connecting portion 16 has a step.
  • the contact surface 19a of the film facing portion 19 with the insulating film 15 is formed at a position far from the core wire 14 with respect to the connecting surface 16a and at a position on the left side in FIG.
  • the tip portion 14a of the core wire 14 is connected to the connecting surface 16a while being bent to the left side in FIG. 1 on the connecting portion 16 side by the above-mentioned ultrasonic welding.
  • the amount of bending of the core wire 14 can be suppressed.
  • the structure is such that the liquid is suppressed from staying over the tip portion 14a of the cable.
  • the tip portion 14a of the core wire 14 is provided with an inclined surface 14c and a groove 14d as a retention suppressing portion for suppressing the retention of liquid over the tip surface 14b of the core wire 14 and the connection surface 16a of the connection portion 16.
  • the inclined surface 14c is provided on the tip surface 14b of the core wire 14.
  • the inclined surface 14c of the present embodiment is formed so as to be inclined so that the entire tip surface 14b of the core wire 14 becomes farther from the connecting surface 16a toward the base end side of the core wire 14.
  • the inclined surface 14c may be formed by crushing the corresponding portion or by cutting.
  • the groove 14d is formed by being recessed on the outer surface of the tip portion 14a of the core wire 14 and opposite to the connecting surface 16a and extending from the tip surface 14b of the core wire 14.
  • the groove 14d of the present embodiment is formed in the direction in which the core wire 14 extends and is inclined with respect to the vertical direction in FIG. Specifically, as shown in FIG. 2, the groove 14d of the present embodiment extends in both directions from the center of the tip surface 14b of the core wire 14 in the width direction with respect to the extending direction of the core wire 14, and the tip portion of the core wire 14 extends. It is formed in a mesh shape including a pair of grooves formed up to the widthwise end portion in 14a.
  • the groove 14d may be formed by crushing the corresponding portion or by cutting.
  • the tip portion 14a of the core wire 14 includes an inclined surface 14c and a groove 14d as a retention suppressing portion for suppressing the retention of liquid over the tip surface 14b of the core wire 14 and the connection surface 16a of the connection portion 16. Therefore, it is possible to prevent the liquid from staying at the site. Therefore, galvanic corrosion can be suppressed.
  • the retention suppressing portion includes the inclined surface 14c provided on the tip surface 14b of the core wire 14, the retention suppressing portion is inclined even if the liquid is about to accumulate over the tip surface 14b of the core wire 14 and the connection surface 16a of the connection portion 16.
  • the surface 14c facilitates the liquid to flow down at an early stage and suppresses the retention of the liquid.
  • the retention suppressing portion includes a groove 14d recessed in the outer surface of the tip portion 14a of the core wire 14 and extending from the tip surface 14b of the core wire 14, the tip surface 14b of the core wire 14 and the connecting surface 16a of the connecting portion 16 Even if the liquid is about to stay, it is guided to the groove 14d and the liquid easily flows down at an early stage, and the retention of the liquid is suppressed.
  • step structure 21 as a retention suppressing structure for suppressing the retention of the liquid over the tip surface 15a of the insulating film 15 and the tip portion 14a of the core wire 14 is provided, the liquid stays in the portion. Is suppressed. Therefore, galvanic corrosion can be suppressed.
  • the retention suppression structure includes a step structure 21 in which the film facing portion 19 has a step with the connection portion 16, a gap is less likely to occur between the inner surface of the tip end portion of the insulating film 15 and the core wire 14, and thus a gap is less likely to occur. It is possible to prevent the liquid from staying over the tip surface 15a of the insulating film 15 and the tip 14a of the core wire 14. That is, for example, in a configuration in which the film facing portion 19 of the terminal 13 does not have a step with the connecting portion 16, the core wire 14 is greatly bent toward the connecting portion 16 during ultrasonic welding, and the force at the time of bending causes the core wire 14 to be significantly bent.
  • This embodiment can be modified and implemented as follows.
  • the present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
  • the tip portion 14a of the core wire 14 is provided with an inclined surface 14c and a groove 14d as a retention suppressing portion, but the liquid spreads over the tip surface 14b of the core wire 14 and the connecting surface 16a of the connecting portion 16. If it is possible to suppress the retention, the configuration may be changed to another configuration.
  • the tip portion 14a of the core wire 14 may have an inclined surface 14c as a retention suppressing portion and may not have the groove 14d of the above embodiment.
  • the shape of the inclined surface 14c may be changed to another shape, for example, it may be formed only on a part of the tip surface 14b of the core wire 14.
  • the tip portion 14a of the core wire 14 may have a groove 14d as a retention suppressing portion and may not have the inclined surface 14c of the above embodiment.
  • the shape of the groove 14d may be changed to another shape, for example, a shape extending along the extending direction of the core wire 14.
  • the stepped structure 21 is provided as the retention suppressing structure, but if it is possible to suppress the retention of the liquid over the tip surface 15a of the insulating film 15 and the tip portion 14a of the core wire 14, It may be changed to another configuration.
  • the retention suppression structure has a structure in which the film facing portion 19 has the same plane as the connecting portion 16, but a gap is formed between the inner surface of the tip end portion of the insulating film 15 and the core wire 14.
  • the crushing holding structure 22 may be changed to crush and hold the electric wire 12 with the gripping piece 20 to a position where it does not exist. That is, in this example, the connecting portion 17 connecting the connecting portion 16 and the film facing portion 19 is formed without bending, and the connecting surface 16a of the connecting portion 16 and the contact surface 19a of the film facing portion 19 are formed on the same plane. Has been done.
  • the gripping piece 20 holds the electric wire 12 so as to crush the electric wire 12 to a position where no gap is formed between the inner surface of the tip end portion of the insulating film 15 and the core wire 14. Even in this way, it is possible to prevent the liquid from staying over the tip surface 15a of the insulating film 15 and the tip 14a of the core wire 14.
  • the retention suppression structure may include a tapered surface 15b formed on the tip surface 15a of the insulating film 15.
  • the tapered surface 15b of this example is formed at a portion of the film facing portion 19 opposite to the contact surface 19a, and the entire tip surface 15a of the insulating film 15 is directed from the contact surface 19a toward the proximal end side of the insulating film 15. It is formed so as to move away. In this way, even if the liquid is about to stay over the tip surface 15a of the insulating film 15 and the tip portion 14a of the core wire 14, the tapered surface 15b makes it easy for the liquid to flow down at an early stage and suppresses the retention of the liquid.
  • the retention suppression structure may include the uneven portion 15c formed on the tip surface 15a of the insulating film 15.
  • the uneven portion 15c of this example is formed with a convex portion 15d protruding toward the tip end at a central portion in the width direction at a portion of the film facing portion 19 opposite to the contact surface 19a.
  • the coplanar surface on the tip surface 15a where the liquid can stay can be reduced. Therefore, the liquid easily flows down at an early stage, and the retention of the liquid is suppressed.
  • the retention suppression structure is a detour structure 23 in which the connecting portion 17 connecting the connecting portion 16 and the film facing portion 19 is bypassed so as to be separated from the tip surface 15a of the insulating film 15. May be included.
  • the bypass structure 23 of this example is formed by bending the connecting portion 17 so as to be separated from the tip surface 15a of the insulating film 15. By doing so, it is possible to prevent the liquid from staying in the connecting portion 17, the tip surface 15a of the insulating film 15, and the tip portion 14a of the core wire 14.
  • the configuration may not have a retention suppression structure.
  • the terminal 13 is nickel-plated, but may be plated with other corrosion-suppressing plating, or may not be plated with corrosion-suppressing plating.
  • the tip portion 14a of the core wire 14 is connected to the connecting surface 16a of the connecting portion 16 by ultrasonic welding, but the present invention is not limited to this, and the tip portion 14a may be connected by other welding or the like. Good.
  • the core wire 14 is made of aluminum or an aluminum alloy as the first metal material, but it may be made of another first metal material. Further, although the terminal 13 is made of copper or a copper alloy as the second metal material, it may be made of another second metal material of a type different from that of the first metal material.
  • a wire harness (11) is An electric wire (12) including a core wire (14) made of a first metal material, wherein the core wire (14) includes a tip portion (14a), and the tip portion (14a) includes a tip surface (14b) and The electric wire (12) including a flat portion having a first main surface, and A connecting portion (16) made of a second metal material of a type different from that of the core wire (14) and having a connecting surface (16a) connected to the first main surface of the tip portion (14a) of the core wire (14). ), With a terminal (13).
  • the tip portion (14a) of the core wire (14) is a retention that suppresses the retention of liquid over the tip surface (14b) of the core wire (14) and the connection surface (16a) of the connection portion (16a). Includes suppressors (14c, 14d).
  • the tip portion (14a) of the core wire (14) has a connection portion (16) in which the first main surface of the tip portion (14a) is the terminal (13). ) Can be placed on the connection surface (16a) of the connection portion (16) of the terminal (13) so as to face the connection surface (16a).
  • the tip end portion (14a) of the core wire (14) includes a second main surface opposite to the first main surface of the tip end portion (14a), and the retention suppressing portion (14c, 14d).
  • the tip surface (14b) has an end portion adjacent to a second main surface of the tip portion (14a) of the core wire (14), and the second main surface is the core wire (14). ), The plurality of grooves (14d) extending from the end of the tip surface (14b) to the two ends of the second main surface. Two grooves (14d) can be included.
  • the plurality of grooves (14d) can extend diagonally with respect to the extending direction of the core wire (14) on the second main surface to form a mesh-like groove.
  • the tip end portion (14a) of the core wire (14) may include a connecting portion that is formed continuously from the flat portion and has an inclined surface that is inclined with respect to the flat portion.

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Insulated Conductors (AREA)

Abstract

La présente invention concerne un faisceau de fils qui permet d'empêcher la corrosion galvanique. Ce faisceau de câbles 11 comprend : un fil électrique 12 qui comporte un fil central 14 constitué d'un premier matériau métallique ; et une borne 13 constituée d'un second matériau métallique dont le type est différent de celui du fil central 14, qui comporte une partie de connexion 16 à laquelle la surface latérale d'une partie de pointe 14a du fil central 14 est connectée. La partie de pointe 14a du fil central 14 comprend un plan incliné 14c et une rainure 14d servant de section d'inhibition de collecte qui empêche la collecte de liquide le long d'une surface de pointe 14b du fil central 14 et d'une surface de connexion 16a de la partie de connexion 16.
PCT/JP2020/030743 2019-08-28 2020-08-13 Faisceau de fils WO2021039412A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019155752A JP2021034299A (ja) 2019-08-28 2019-08-28 ワイヤハーネス
JP2019-155752 2019-08-28

Publications (1)

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WO2021039412A1 true WO2021039412A1 (fr) 2021-03-04

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PCT/JP2020/030743 WO2021039412A1 (fr) 2019-08-28 2020-08-13 Faisceau de fils

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JP (1) JP2021034299A (fr)
WO (1) WO2021039412A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015153622A (ja) * 2014-02-14 2015-08-24 住友電装株式会社 アルミニウム系電線の端子接続構造
JP2016001551A (ja) * 2014-06-12 2016-01-07 古河電気工業株式会社 被覆電線および圧着端子付き電線
JP2019079735A (ja) * 2017-10-26 2019-05-23 矢崎総業株式会社 電気コネクタ端子

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015153622A (ja) * 2014-02-14 2015-08-24 住友電装株式会社 アルミニウム系電線の端子接続構造
JP2016001551A (ja) * 2014-06-12 2016-01-07 古河電気工業株式会社 被覆電線および圧着端子付き電線
JP2019079735A (ja) * 2017-10-26 2019-05-23 矢崎総業株式会社 電気コネクタ端子

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