JP2019129106A - Terminal-equipped electric wire - Google Patents

Terminal-equipped electric wire Download PDF

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Publication number
JP2019129106A
JP2019129106A JP2018011255A JP2018011255A JP2019129106A JP 2019129106 A JP2019129106 A JP 2019129106A JP 2018011255 A JP2018011255 A JP 2018011255A JP 2018011255 A JP2018011255 A JP 2018011255A JP 2019129106 A JP2019129106 A JP 2019129106A
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Japan
Prior art keywords
core wire
covering
wire
terminal
electric wire
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JP2018011255A
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Japanese (ja)
Inventor
川田　祐司
Yuji Kawada
祐司 川田
宮本　賢次
Kenji Miyamoto
賢次 宮本
須藤　博
Hiroshi Sudo
博 須藤
佑樹 矢部
Yuki Yabe
佑樹 矢部
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Application filed by Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to JP2018011255A priority Critical patent/JP2019129106A/en
Priority to PCT/JP2019/001950 priority patent/WO2019146609A1/en
Publication of JP2019129106A publication Critical patent/JP2019129106A/en
Pending legal-status Critical Current

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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
    • 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
    • H01R4/10—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
    • 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
    • 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

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

Abstract

To provide a terminal-equipped electric wire that can assure waterproofing of a junction portion between a core wire and a terminal fitting.SOLUTION: A terminal-equipped electric wire 1 comprises: an electric wire 10; a terminal fitting 20; and a heat-shrinkable tube 50. The electric wire 10 comprises: a core wire exposed part 13; and a first coating part 14A and a second coating part 14B that are placed at both sides of the core wire exposed part 13. The terminal fitting 20 comprises: a core wire junction part 22; an extension part 31 arranged along the first coating part 14A; and a connection part 41 that is continued from the extension part 31. The heat-shrinkable tube 50 covers the electric wire 10 and the terminal fitting 20 from the extension part 31 to one end of the first coating part 14A, and a water cut-off material 60 that fills a gap between the extension part 31 and the first coating part 14A is placed between the extension part 31 and the first coating part 14A.SELECTED DRAWING: Figure 6

Description

本明細書によって開示される技術は、端子付き電線に関する。   The technology disclosed by the present specification relates to a terminal-equipped wire.

端子付き電線は、電線と、この電線において絶縁被覆から露出した芯線に接合された端子金具とを備える。端子金具は、電線が超音波溶接によって接合される被接合部と、被接合部の両端にそれぞれ設けられて絶縁被覆にかしめ付けられる圧着部とを備える本体部と、他の導電部材に接続可能な接点部と、本体部と接点部とを繋ぐ連結部とを備えている。端子金具と芯線との接合部分は、防水のために、熱収縮チューブで覆われている。熱収縮チューブの一端は、一方の圧着部の外側に位置して絶縁被覆に密着している。また他端は、他方の圧着部の外側に位置して、絶縁被覆と、連結部の一部とを覆っている（特許文献１参照）。   The terminal-attached electric wire includes the electric wire and the terminal fitting joined to the core wire exposed from the insulating coating in the electric wire. The terminal fitting can be connected to other conductive members including a main body portion including a bonded portion to which electric wires are joined by ultrasonic welding, and a crimped portion respectively provided on both ends of the bonded portion and crimped to an insulation coating And a connecting portion connecting the main body portion and the contact portion. The junction between the terminal fitting and the core wire is covered with a heat-shrinkable tube for waterproofing. One end of the heat-shrinkable tube is located outside of one of the crimped portions and is in intimate contact with the insulating coating. The other end is located outside the other crimped portion and covers the insulation coating and a part of the connecting portion (see Patent Document 1).

特開２０１５−１５２０７号公報JP, 2015-15207, A

上記の構成では、端子金具の連結部と電線との間に比較的大きな隙間ができてしまうことがある。この隙間は、熱収縮チューブを加熱収縮させて端子金具および電線に密着させる工程において、熱収縮チューブの内側に設けられた接着剤を加熱流動させることによって埋めることができる。しかし、何らかの理由によって隙間が充分に埋められない場合には、この隙間から水が進入して端子金具と芯線との接合部分に腐食を生じさせることが懸念される。このため、防水を確実なものとするためには、なお改善の余地があった。   In the above configuration, a relatively large gap may be formed between the connecting portion of the terminal fitting and the electric wire. This gap can be filled by heating and flowing the adhesive provided inside the heat-shrinkable tube in the step of heating and shrinking the heat-shrinkable tube and bringing it into close contact with the terminal fitting and the electric wire. However, if the gap is not sufficiently filled for some reason, there is a concern that water may enter from the gap to cause corrosion at the joint between the terminal metal fitting and the core wire. Therefore, there is still room for improvement in order to ensure waterproofness.

本明細書によって開示される端子付き電線は、芯線と、前記芯線を被覆する絶縁被覆と、を備える電線と、前記芯線に接合される端子金具と、前記芯線と前記端子金具との接合部分を止水する被覆部材とを備える端子付き電線であって、前記電線は、前記絶縁被覆から前記芯線が露出された芯線露出部と、前記芯線露出部の両側にそれぞれ配され、前記芯線が前記絶縁被覆によって覆われた第１被覆部および第２被覆部とを備えており、前記端子金具は、前記芯線に接合される芯線接合部と、前記第１被覆部に沿って配置される延出部と、前記延出部から連なり、他の部材と接続される接続部と、を備えており、前記被覆部材は、前記延出部から前記第１被覆部の一端までの間に亘って前記電線および前記端子金具を被覆しており、前記延出部と前記第１被覆部との間に、前記延出部と前記第１被覆部との隙間を埋める止水材が配されている。   An electric wire with a terminal disclosed by the present specification includes an electric wire including a core wire and an insulating coating that covers the core wire, a terminal fitting joined to the core wire, and a joint portion between the core wire and the terminal fitting. An electric wire with a terminal comprising a covering member for stopping water, wherein the electric wire is disposed on each of an exposed portion of the core wire from which the core wire is exposed from the insulating coating and both sides of the exposed portion of the core wire, and the core wire is insulated from the insulating wire. A first covering portion and a second covering portion covered with a covering; and the terminal fitting includes a core wire joining portion joined to the core wire, and an extending portion arranged along the first covering portion. And a connecting portion connected from the extending portion and connected to another member, and the covering member extends from the extending portion to one end of the first covering portion. And the terminal fitting is covered, the extension And between the first covering portion, the water stopping material to fill the gap between the first cover portion and the extending portion is disposed.

上記の構成によれば、第１被覆部において、延出部に覆われている部分を除く部分の外周面と、延出部の外周面および端面とに、熱収縮チューブが密着している。また、延出部と第１被覆部との間には止水材が配されており、この止水材により、延出部と第１被覆部との隙間が埋められている。これにより、芯線と端子金具との接合部の防水を確実なものとすることができる。   According to said structure, in the 1st coating | coated part, the heat contraction tube is closely_contact | adhered to the outer peripheral surface of the part except the part covered with the extension part, and the outer peripheral surface and end surface of the extension part. In addition, a water blocking material is disposed between the extended portion and the first covering portion, and the water blocking material fills the gap between the extending portion and the first covering portion. Thereby, the waterproofing of the joint portion between the core wire and the terminal fitting can be made reliable.

上記の構成において、前記延出部が、前記第１被覆部の外周面に沿った曲面形状を有していても構わない。   In the above configuration, the extension portion may have a curved surface shape along the outer peripheral surface of the first covering portion.

このような構成によれば、延出部と第１被覆部との隙間が最小限となっている。これにより、芯線と端子金具との接合部の防水をさらに確実なものとすることができる。   According to such a configuration, the gap between the extension portion and the first covering portion is minimized. Thereby, the waterproofing of the joint portion between the core wire and the terminal fitting can be made more reliable.

上記の構成において、前記端子金具は、前記芯線接合部の両側に配されて前記第１被覆部および前記第２被覆部にそれぞれ圧着される第１圧着部および第２圧着部を備えていても構わない。   Said structure WHEREIN: Even if the said terminal metal fitting is provided on the both sides of the said core wire junction part, it may be provided with the 1st crimping | compression-bonding part and the 2nd crimping | compression-bonding part crimped | bonded to the said 1st coating | coated part and the said 2nd coating | coated part, respectively. I do not care.

このような構成によれば、芯線接合部の両端が固定され、端子金具の位置決めがなされることから、被覆部材の取付けが容易となる。   According to such a configuration, both ends of the core joint portion are fixed and the terminal fitting is positioned, so that the covering member can be easily attached.

本明細書によって開示される端子付き電線によれば、芯線と端子金具との接合部分の防水を確実なものとすることができる。   According to the terminal-attached electric wire disclosed by the present specification, waterproofing of the joint portion between the core wire and the terminal fitting can be ensured.

実施形態の端子付き電線の側面図Side view of the terminal-equipped wire of the embodiment 実施形態の端子金具の側面図Side view of the terminal fitting of the embodiment 実施形態の電線の側面図Side view of the electric wire of the embodiment 実施形態の端子金具と止水材の斜視図The terminal metal fitting of the embodiment and the perspective view of the water blocking material 実施形態において、電線が接合された端子金具の側面図In the embodiment, the side view of the terminal fitting to which the electric wire is joined 図１のＡ−Ａ線断面図AA line sectional view of FIG.

実施形態を、図１〜図６を参照しつつ説明する。本実施形態の端子付き電線１は、電線１０と、この電線１０に接合される端子金具２０と、電線１０と端子金具２０との接合部分を止水する熱収縮チューブ５０（被覆部材に該当）と、電線１０と端子金具２０との隙間を埋める止水材６０とを備える。   Embodiments will be described with reference to FIGS. The terminal-equipped electric wire 1 of the present embodiment is a heat-shrinkable tube 50 (corresponding to a covering member) that shuts off the joint portion of the electric wire 10, the terminal fitting 20 joined to the electric wire 10, and the electric wire 10 and the terminal fitting 20. And a water blocking material 60 filling the gap between the electric wire 10 and the terminal fitting 20.

電線１０は、図３に示すように、アルミニウムまたはアルミニウム合金製の素線の複数本を撚り合わせた撚り線によって構成された芯線１１と、この芯線１１を被覆する合成樹脂製の絶縁被覆１２とを備えた、周知の構成のアルミニウム電線である。この電線１０の一部は、絶縁被覆１２が剥き取られて芯線１１が露出された芯線露出部１３となっており、この芯線露出部１３の両側の部分は、芯線１１が絶縁被覆によって覆われた被覆部（一方が第１被覆部１４Ａ、他方が第２被覆部１４Ｂ）となっている。   As shown in FIG. 3, the electric wire 10 includes a core wire 11 formed of a stranded wire obtained by twisting a plurality of strands made of aluminum or an aluminum alloy, and an insulating coating 12 made of a synthetic resin that covers the core wire 11. , An aluminum wire of known configuration. A part of the electric wire 10 is a core wire exposed portion 13 where the insulation coating 12 is peeled off to expose the core wire 11. The core wire 11 is covered with the insulation coating on both sides of the core wire exposed portion 13 A covered portion (one is a first covered portion 14A and the other is a second covered portion 14B).

端子金具２０は、銅または銅合金製であって、図２に示すように、電線１０に接続される本体部２１と、本体部２１から延びる延出部３１と、延出部３１から延びる接続部４１とを備えている。   The terminal fitting 20 is made of copper or a copper alloy, and as shown in FIG. 2, a main body 21 connected to the electric wire 10, an extension 31 extending from the main body 21, and a connection extending from the extension 31. And a unit 41.

本体部２１は、芯線接合部２２と、芯線接合部２２から連なる２つの圧着部（第１圧着部２３Ａ、第２圧着部２３Ｂ）とを備えている。   The main body 21 includes a core wire joining portion 22 and two crimping portions (a first crimping portion 23A and a second crimping portion 23B) continuous from the core wire joining portion 22.

芯線接合部２２は、図２および図４に示すように、平板な帯状の部分であって、図５に示すように、芯線露出部１３において絶縁被覆１２から露出した芯線１１が、例えば超音波溶接によって接合されている。   2 and 4, the core wire joining portion 22 is a flat belt-like portion. As shown in FIG. 5, the core wire 11 exposed from the insulating coating 12 in the core wire exposed portion 13 is, for example, an ultrasonic wave. It is joined by welding.

第１圧着部２３Ａは、図２に示すように、芯線接合部２２の一端から延びる中間部２４と、この中間部２４から連なり、第１被覆部１４Ａにかしめ付けられるかしめ部２５とを備えている。かしめ部２５は、端子金具２０が電線１０と接合されていない単体の状態では、図４に示すように、Ｕ字状をなしており、Ｕ字の底辺に相当する部分が底部２６となっており、Ｕ字の２つの縦棒部分が、一対のかしめ片２７となっている。底部２６は、第１被覆部１４Ａにおける絶縁被覆１２の外周面の湾曲形状に倣う湾曲形状を有している。この第１圧着部２３Ａは、図５に示すように、一対のかしめ片２７が互いに内側に曲げられ、第１被覆部１４Ａに巻き付けられることにより、第１被覆部１４Ａに圧着されている。中間部２４は、芯線接合部２２の平板形状から底部２６の湾曲形状まで緩やかに変形しながら延び、芯線接合部２２の一端と底部２６とを繋いでいる。   As shown in FIG. 2, the first crimped portion 23A includes an intermediate portion 24 extending from one end of the core wire joint portion 22 and a caulking portion 25 connected from the intermediate portion 24 and caulked to the first covering portion 14A. There is. The caulking portion 25 is U-shaped as shown in FIG. 4 in a single state in which the terminal fitting 20 is not joined to the electric wire 10, and a portion corresponding to the bottom of the U-shape is the bottom portion 26. The two U-shaped vertical bar portions form a pair of caulking pieces 27. The bottom portion 26 has a curved shape that follows the curved shape of the outer peripheral surface of the insulating coating 12 in the first coating portion 14A. As shown in FIG. 5, the first crimped portion 23A is crimped to the first covering portion 14A by bending the pair of caulking pieces 27 inwardly and winding around the first covering portion 14A. The intermediate portion 24 extends while gently deforming from the flat plate shape of the core wire joint portion 22 to the curved shape of the bottom portion 26, and connects one end of the core wire joint portion 22 and the bottom portion 26.

第２圧着部２３Ｂは、芯線接合部２２の他端から延びており、第２被覆部１４Ｂに圧着されている。第２圧着部２３Ｂは第１圧着部２３Ａと同様の構成を有しているので、詳細な説明を省略する。   The second crimped portion 23B extends from the other end of the core joint portion 22 and is crimped to the second covering portion 14B. Since the second pressure-bonding parts 23B have the same configuration as the first pressure-bonding parts 23A, the detailed description will be omitted.

延出部３１は、図２に示すように、第１圧着部２３Ａから連なり、底部２６から、芯線接合部２２と反対方向に延びる部分である。この延出部３１は、図４および図６に示すように、第１被覆部１４Ａにおける絶縁被覆１２の外周面に沿ったハーフパイプ形状を有しており、図５に示すように、第１被覆部１４Ａに沿って配置されている。延出部３１の内側面（凹面）は、図４および図６に示すように、第１被覆部１４Ａに対向し、絶縁被覆１２の外周面に沿った曲面形状を有する電線対向面３１Ｆとなっている。   As shown in FIG. 2, the extending portion 31 is a portion that extends from the first crimping portion 23 </ b> A and extends from the bottom portion 26 in the direction opposite to the core wire joining portion 22. The extension 31 has a half pipe shape along the outer peripheral surface of the insulating coating 12 in the first coating 14A as shown in FIGS. 4 and 6, and as shown in FIG. It arrange | positions along 14 A of coating | coated parts. As shown in FIGS. 4 and 6, the inner side surface (concave surface) of the extending portion 31 is a wire opposing surface 31F that has a curved shape that faces the first covering portion 14A and is along the outer peripheral surface of the insulating covering 12. ing.

接続部４１は、図２に示すように、延出部３１から連なる連結部４２と、連結部４２から連なり、機器等に備えられる相手端子に接続される接続片４３とを備えている。接続片４３は、平板状であって、芯線接合部２２に対して垂直な向きに延びている。連結部４２は、延出部３１の延出端と接続片４３の一端とを繋いでおり、延出部３１の湾曲形状から接続片４３の一端の直線形状まで緩やかに変形しながら延びている。   As shown in FIG. 2, the connecting portion 41 includes a connecting portion 42 that continues from the extending portion 31, and a connecting piece 43 that continues from the connecting portion 42 and is connected to a mating terminal provided in a device or the like. The connection piece 43 is flat and extends in a direction perpendicular to the core joint 22. The connecting portion 42 connects the extending end of the extending portion 31 and one end of the connecting piece 43, and extends while being gently deformed from the curved shape of the extending portion 31 to the linear shape of one end of the connecting piece 43. .

熱収縮チューブ５０は、図６に示すように、外周側の防水層５１と、防水層５１の内側に配置される接着層５２との二層構造をなす筒状の部材である。防水層５１は、加熱処理によって収縮し、かつ防水性を有する樹脂材料により構成されており、接着層５２は、熱溶融性の接着剤により構成されている。この熱収縮チューブ５０は、電線１０と端子金具２０との接合部分を、全周にわたって、密着状態で被覆している。図１に示すように、熱収縮チューブ５０の一端は、第１被覆部１４Ａにおいて、延出部３１の延出端よりも僅かに第１圧着部２３Ａに近接して位置しており、他端は、第２被覆部１４Ｂにおいて、第２圧着部２３Ｂに対して芯線接合部２２とは反対側に位置している。   As shown in FIG. 6, the heat-shrinkable tube 50 is a cylindrical member having a two-layer structure including a waterproof layer 51 on the outer peripheral side and an adhesive layer 52 disposed inside the waterproof layer 51. The waterproof layer 51 is made of a resin material which is shrunk by heat treatment and has a waterproof property, and the adhesive layer 52 is made of a heat melting adhesive. The heat-shrinkable tube 50 covers the joint portion between the electric wire 10 and the terminal fitting 20 in a close contact state over the entire circumference. As shown in FIG. 1, one end of the heat-shrinkable tube 50 is positioned slightly closer to the first crimped portion 23A than the extension end of the extension portion 31 in the first covering portion 14A, and the other end Is located on the side opposite to the core wire bonding portion 22 with respect to the second pressure-bonding portion 23B in the second covering portion 14B.

熱収縮チューブ５０の一部は、延出部３１から（具体的には、延出部３１において延出端よりも僅かに第１圧着部２３Ａに近接する位置から）、第１被覆部１４Ａにおいて芯線露出部１３に隣接する一端までの間に亘って、電線１０および端子金具２０を被覆している。   A part of the heat-shrinkable tube 50 extends from the extending portion 31 (specifically, from a position slightly closer to the first crimping portion 23A than the extending end of the extending portion 31) to the first covering portion 14A. The electric wire 10 and the terminal fitting 20 are covered over to the one end adjacent to the core wire exposed portion 13.

止水材６０は、図６に示すように、延出部３１の電線対向面３１Ｆに配置され、電線対向面３１Ｆと第１被覆部１４Ａの外周面との隙間を埋める部材である。止水材６０は、例えば、ブチルゴムまたはウレタンゴム製の止水テープを電線対向面３１Ｆに貼り付けること、または、熱溶融性を有する接着剤を電線対向面３１Ｆに塗布することなどにより形成できる。扱いの容易性から、止水テープが用いられることが好ましい。   As shown in FIG. 6, the water blocking material 60 is a member that is disposed on the wire facing surface 31 </ b> F of the extending portion 31 and fills the gap between the wire facing surface 31 </ b> F and the outer peripheral surface of the first covering portion 14 </ b> A. The water blocking material 60 can be formed, for example, by attaching a water blocking tape made of butyl rubber or urethane rubber to the wire facing surface 31F, or applying a heat melting adhesive to the wire facing surface 31F, or the like. From the viewpoint of ease of handling, it is preferable to use a water blocking tape.

熱収縮チューブ５０の一端においては、図６に示すように、第１被覆部１４Ａにおいて、延出部３１に覆われている部分を除く部分の外周面と、延出部３１の外側面（凸面）および端面とに、熱収縮チューブ５０が隙間なく密着している。また、止水材６０が延出部３１と第１被覆部１４Ａとの間に介在して両者の隙間を埋めている。また、熱収縮チューブ５０の他端においては、詳細に図示しないが、第２被覆部１４Ｂの外周面に熱収縮チューブ５０が隙間なく密着している。これらにより、芯線１１と芯線接合部２２との接合部の防水が図られている。   At one end of the heat-shrinkable tube 50, as shown in FIG. 6, in the first covering portion 14A, the outer peripheral surface of the portion excluding the portion covered with the extending portion 31, and the outer surface (convex surface) of the extending portion 31 ) And the end face, the heat shrinkable tube 50 is in close contact with no gap. Moreover, the water blocking material 60 intervenes between the extension part 31 and the first covering part 14A to fill the gap between the two. Further, at the other end of the heat shrinkable tube 50, although not shown in detail, the heat shrinkable tube 50 is in close contact with the outer peripheral surface of the second covering portion 14B without a gap. Thus, waterproofing of the joint portion between the core wire 11 and the core wire joint portion 22 is achieved.

上記の構成の端子付き電線１の製造方法の一例を、以下に示す。   An example of the manufacturing method of the terminal-equipped electric wire 1 of the above-mentioned composition is shown below.

まず、電線１０において、芯線接合部２２に接合したい部分の絶縁被覆１２を剥離除去して、芯線１１を露出させておく（図３参照）。   First, in the electric wire 10, the portion of the insulation coating 12 to be joined to the core wire joint portion 22 is peeled and removed to expose the core wire 11 (see FIG. 3).

次に、延出部３１の電線対向面３１Ｆに、止水材６０であるブチルゴム製の止水テープを貼り付ける（図４参照）。   Next, a water blocking tape made of butyl rubber, which is a water blocking material 60, is attached to the wire facing surface 31F of the extension part 31 (see FIG. 4).

次に、露出された芯線１１が芯線接合部２２に重なり、第１被覆部１４Ａが第１圧着部２３Ａ、および止水材６０に重なり、第２被覆部１４Ｂが第２圧着部２３Ｂに重なるように、電線１０を配置する。そして、超音波溶接により、露出された芯線１１を芯線接合部２２に接合する。次いで、第１圧着部２３Ａを第１被覆部１４Ａに、第２圧着部２３Ｂを第２被覆部１４Ｂに、それぞれかしめ付ける（図５参照）。   Next, the exposed core wire 11 overlaps the core wire bonding portion 22, the first covering portion 14A overlaps the first pressure bonding portion 23A, and the water blocking material 60, and the second covering portion 14B overlaps the second pressure bonding portion 23B. Then, the electric wire 10 is arranged. Then, the exposed core wire 11 is joined to the core wire bonding portion 22 by ultrasonic welding. Then, the first crimped portion 23A is crimped to the first covering portion 14A, and the second crimped portion 23B is crimped to the second covering portion 14B (see FIG. 5).

この後、端子金具２０が接合された電線１０を、未加熱状態の熱収縮チューブ５０に挿通する。そして、加熱処理を施すと、防水層５１が収縮することで、熱収縮チューブ５０が、電線１０および端子金具２０をぴったりと覆う。また、接着層５２が加熱流動することで、防水層５１と電線１０および端子金具２０との隙間が埋められる。   Thereafter, the wire 10 to which the terminal fitting 20 is joined is inserted into the heat-shrinkable tube 50 in the unheated state. Then, when the heat treatment is performed, the heat-shrinkable tube 50 tightly covers the electric wire 10 and the terminal fitting 20 by the waterproof layer 51 contracting. Further, the adhesive layer 52 heats and flows, whereby the gap between the waterproof layer 51 and the electric wire 10 and the terminal fitting 20 is filled.

熱収縮チューブ５０の一端においては、第１被覆部１４Ａにおいて、延出部３１に覆われている部分を除く部分の外周面と、延出部３１の外周面（凸面：図６の下面）および端面とに、熱収縮チューブ５０が隙間なく密着している。なお、図６に示すように、延出部３１の外周面と、第１被覆部１４Ａにおいて延出部３１に覆われていない部分の外周面との間には、段差があるため、この段差部分と防水層５１との間に隙間が生じることがあるが、この隙間は、接着層５２の加熱流動によって埋められる。また、延出部３１において第１被覆部１４Ａに対向する電線対向面３１Ｆが、第１被覆部１４Ａにおける絶縁被覆１２の外周面に沿った曲面形状を有していることで、延出部３１と第１被覆部１４Ａとの隙間が最小限となっており、この隙間は、止水材６０が延出部３１と第１被覆部１４Ａとの間に介在することにより埋められている。一方、熱収縮チューブ５０の他端においては、第２被覆部１４Ｂの外周面に熱収縮チューブ５０が隙間なく密着する。これらにより、熱収縮チューブ５０の内部に水が侵入することが防がれ、芯線１１と芯線接合部２２との接合部の防水が図られる。   At one end of the heat-shrinkable tube 50, in the first covering portion 14A, the outer peripheral surface of the portion excluding the portion covered with the extending portion 31, the outer peripheral surface (convex surface: the lower surface in FIG. 6) of the extending portion 31, and The heat-shrinkable tube 50 is in close contact with the end face without a gap. Note that, as shown in FIG. 6, there is a step between the outer peripheral surface of the extending portion 31 and the outer peripheral surface of the portion of the first covering portion 14A not covered by the extending portion 31. Although a gap may occur between the portion and the waterproof layer 51, this gap is filled by the heat flow of the adhesive layer 52. In addition, the wire facing surface 31F facing the first covering portion 14A in the extending portion 31 has a curved surface shape along the outer peripheral surface of the insulating covering 12 in the first covering portion 14A. The clearance between the first covering portion 14A and the first covering portion 14A is minimized, and the clearance is filled by interposing the water blocking material 60 between the extending portion 31 and the first covering portion 14A. On the other hand, at the other end of the heat shrinkable tube 50, the heat shrinkable tube 50 is in close contact with the outer peripheral surface of the second covering portion 14B without any gap. As a result, the entry of water into the inside of the heat-shrinkable tube 50 is prevented, and waterproofing of the joint between the core wire 11 and the core wire joint 22 is achieved.

このようにして、端子付き電線１が得られる。   Thus, the terminal-equipped wire 1 is obtained.

以上のように本実施形態によれば、端子付き電線１は、芯線１１と、芯線１１を被覆する絶縁被覆１２とを備える電線１０と、芯線１１に接合される端子金具２０と、芯線１１と端子金具２０との接合部分を止水する熱収縮チューブ５０とを備える。電線１０が、絶縁被覆１２から芯線１１が露出された芯線露出部１３と、芯線露出部１３の両側にそれぞれ配され、芯線１１が絶縁被覆１２によって覆われた第１被覆部１４Ａおよび第２被覆部１４Ｂとを備えている。端子金具２０が、芯線１１に接合される芯線接合部２２と、第１被覆部１４Ａに沿って配置される延出部３１と、延出部３１から連なり、他の部材と接続される接続部４１とを備えている。熱収縮チューブ５０が、延出部３１から、第１被覆部１４Ａの一端までの間に亘って電線１０および端子金具２０を被覆しており、延出部３１と第１被覆部１４Ａとの間に、延出部３１と第１被覆部１４Ａとの隙間を埋める止水材６０が配されている。   As described above, according to the present embodiment, the terminal-attached electric wire 1 includes the electric wire 10 including the core wire 11 and the insulating coating 12 covering the core wire 11, the terminal fitting 20 joined to the core wire 11, and the core wire 11. And a heat-shrinkable tube 50 for stopping the junction with the terminal fitting 20. Electric wire 10 is disposed on both sides of core wire exposed portion 13 where core wire 11 is exposed from insulation coating 12 and core wire exposed portion 13, and first coating portion 14A and second coating in which core wire 11 is covered with insulation coating 12 And a unit 14B. The terminal fitting 20 is connected to the core wire 11, the core wire joint portion 22 joined to the core wire 11, the extension portion 31 disposed along the first covering portion 14A, and the extension portion 31 and a connection portion connected to other members And 41 are provided. The heat-shrinkable tube 50 covers the electric wire 10 and the terminal fitting 20 from the extending portion 31 to one end of the first covering portion 14A, and between the extending portion 31 and the first covering portion 14A. A water blocking material 60 is disposed to fill the gap between the extending portion 31 and the first covering portion 14A.

上記の構成によれば、第１被覆部１４Ａにおいて、延出部３１に覆われている部分を除く部分の外周面と、延出部３１の外周面および端面とに、熱収縮チューブ５０が隙間なく密着している。また、延出部３１と第１被覆部１４Ａとの間には止水材６０が配されており、この止水材６０により、延出部３１と第１被覆部１４Ａとの隙間が埋められている。これにより、芯線１１と端子金具２０との接合部の防水を確実なものとすることができる。   According to the above configuration, in the first covering portion 14 </ b> A, the heat-shrinkable tube 50 is a gap between the outer peripheral surface of the portion excluding the portion covered with the extending portion 31 and the outer peripheral surface and the end surface of the extending portion 31. There is no close contact. Further, a water blocking material 60 is disposed between the extension part 31 and the first covering part 14A, and the water blocking material 60 fills the gap between the extension part 31 and the first covering part 14A. ing. Thereby, the waterproofing of the joint between the core wire 11 and the terminal fitting 20 can be made reliable.

また、延出部３１が、第１被覆部１４Ａの外周面に沿った曲面形状を有している。このような構成によれば、延出部３１と第１被覆部１４Ａとの隙間が最小限となっている。これにより、芯線１１と端子金具２０との接合部の防水をさらに確実なものとすることができる。   Moreover, the extension part 31 has a curved surface shape along the outer peripheral surface of the first covering part 14A. According to such a configuration, the gap between the extension part 31 and the first covering part 14A is minimized. As a result, waterproofing of the joint portion between the core wire 11 and the terminal fitting 20 can be further ensured.

さらに、端子金具２０は、芯線接合部２２の両側に配されて第１被覆部１４Ａおよび第２被覆部１４Ｂにそれぞれ圧着される第１圧着部２３Ａおよび第２圧着部２３Ｂを備えている。   Furthermore, the terminal fitting 20 includes a first crimping portion 23A and a second crimping portion 23B that are arranged on both sides of the core wire joining portion 22 and are crimped to the first covering portion 14A and the second covering portion 14B, respectively.

このような構成によれば、芯線接合部２２の両端が固定され、端子金具２０の位置決めがなされることから、熱収縮チューブ５０の取り付けが容易となる。   According to such a configuration, both ends of the core wire joining portion 22 are fixed and the terminal fitting 20 is positioned, so that the heat shrinkable tube 50 can be easily attached.

＜他の実施形態＞
本明細書によって開示される技術は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような種々の態様も含まれる。
（１）上記実施形態では、芯線１１がアルミニウムまたはアルミニウム合金製であり、端子金具が銅または銅合金製であったが、芯線および端子金具の材質は上記実施形態の限りではなく、例えば芯線と端子金具とがともに銅または銅合金であっても構わない。 Other Embodiments
The art disclosed by the present specification is not limited to the embodiments described above with reference to the drawings and the drawings, and includes, for example, various aspects as follows.
(1) In the above embodiment, the core wire 11 is made of aluminum or aluminum alloy and the terminal fitting is made of copper or copper alloy, but the material of the core wire and the terminal fitting is not limited to the above embodiment. Both terminal fittings may be copper or a copper alloy.

（２）上記実施形態では、芯線１１が超音波溶接により端子金具２０に接合されていたが、芯線の端子金具に対する接合方法は上記実施形態の限りではなく、例えば超音波溶接以外の溶接方法によって接合されていても構わない。 (2) In the said embodiment, although the core wire 11 was joined to the terminal metal fitting 20 by ultrasonic welding, the joining method with respect to the terminal metal fitting of a core wire is not restricted to the said embodiment, For example, by welding methods other than ultrasonic welding It may be joined.

１…端子付き電線
１０…電線
１１…芯線
１２…絶縁被覆
１３…芯線露出部
１４Ａ…第１被覆部
１４Ｂ…第２被覆部
２０…端子金具
２２…芯線接合部
２３Ａ…第１圧着部
２３Ｂ…第２圧着部
３１…延出部
４１…接続部
５０…熱収縮チューブ（被覆部材）
６０…止水材 DESCRIPTION OF SYMBOLS 1 ... Terminal-attached electric wire 10 ... Electric wire 11 ... Core wire 12 ... Insulating coating 13 ... Core wire exposed portion 14 A ... First covering portion 14 B ... Second covering portion 20 ... Terminal fitting 22 ... Core wire joint portion 23 A ... First crimped portion 23 B ... First 2 crimped portion 31 ... extended portion 41 ... connected portion 50 ... heat shrinkable tube (covering member)
60 ... water stopping material

Claims (3)

芯線と、前記芯線を被覆する絶縁被覆と、を備える電線と、
前記芯線に接合される端子金具と、
前記芯線と前記端子金具との接合部分を止水する被覆部材とを備える端子付き電線であって、
前記電線は、前記絶縁被覆から前記芯線が露出された芯線露出部と、前記芯線露出部の両側にそれぞれ配され、前記芯線が前記絶縁被覆によって覆われた第１被覆部および第２被覆部とを備えており、
前記端子金具は、前記芯線に接合される芯線接合部と、前記第１被覆部に沿って配置される延出部と、前記延出部から連なり、他の部材と接続される接続部と、を備えており、
前記被覆部材は、前記延出部から前記第１被覆部の一端までの間に亘って前記電線および前記端子金具を被覆しており、
前記延出部と前記第１被覆部との間に、前記延出部と前記第１被覆部との隙間を埋める止水材が配されている、端子付き電線。 A wire comprising a core wire and an insulation coating covering the core wire;
A terminal fitting joined to the core wire;
It is an electric wire with a terminal provided with the covering member which water-stops the junctional part of the above-mentioned core wire and the above-mentioned terminal metal fitting,
The electric wire is disposed on a core wire exposed portion in which the core wire is exposed from the insulating coating, and a first covering portion and a second covering portion which are respectively disposed on both sides of the core wire exposing portion and the core wire is covered by the insulating coating. Equipped with
The terminal fitting includes a core wire joint portion joined to the core wire, an extension portion disposed along the first covering portion, and a connection portion connected from the extension portion and connected to another member; Equipped with
The covering member covers the wire and the terminal metal fitting from the extending portion to one end of the first covering portion.
The electric wire with a terminal in which the water blocking material which fills the crevice between the extension part and the 1st covering part is arranged between the extension part and the 1st covering part. 前記延出部が、前記第１被覆部の外周面に沿った曲面形状を有している、請求項１に記載の端子付き電線。   The electric wire with a terminal according to claim 1, wherein the extension part has a curved surface shape along the outer peripheral surface of the first covering part. 前記端子金具は、前記芯線接合部の両側に配されて前記第１被覆部および前記第２被覆部にそれぞれ圧着される第１圧着部および第２圧着部を備えている、請求項１または２に記載の端子付き電線。   The said terminal metal fitting is provided with the 1st crimping | compression-bonding part and the 2nd crimping | compression-bonding part which are distribute | arranged on both sides of the said core wire junction part, and are crimped | bonded to the said 1st coating | coated part and the said 2nd coating | coated part, respectively. Wire with terminal described in.
JP2018011255A 2018-01-26 2018-01-26 Terminal-equipped electric wire Pending JP2019129106A (en)

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