JP2010055874A - Connection structure of terminal metal fitting and electric wire - Google Patents

Connection structure of terminal metal fitting and electric wire Download PDF

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Publication number
JP2010055874A
JP2010055874A JP2008218190A JP2008218190A JP2010055874A JP 2010055874 A JP2010055874 A JP 2010055874A JP 2008218190 A JP2008218190 A JP 2008218190A JP 2008218190 A JP2008218190 A JP 2008218190A JP 2010055874 A JP2010055874 A JP 2010055874A
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Prior art keywords
conductor
wire
electric wire
terminal
connection structure
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JP2008218190A
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Inventor
Keiichi Nakamura
圭一 中村
Makoto Fukamachi
誠 深町
Yutaka Kobayashi
豊 小林
Masahiro Noda
昌宏 野田
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Priority to JP2008218190A priority Critical patent/JP2010055874A/en
Priority to EP12001358A priority patent/EP2482384A3/en
Priority to EP09008007A priority patent/EP2151893A1/en
Priority to CN 200910139926 priority patent/CN101645543B/en
Priority to US12/504,476 priority patent/US7828611B2/en
Publication of JP2010055874A publication Critical patent/JP2010055874A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To achieve prevention of formation of electric corrosion at a connected part of a conductor and a terminal metal fitting in the case the conductor and the terminal metal fitting of an electric wire are made of a different kind of metal. <P>SOLUTION: An electric wire crimped part 26 of an open barrel shape formed in the terminal metal fitting 20A and the front end part of the electric wire 10 in which the conductor 11 composed of the different kind of metal from the terminal metal fitting 20A is surrounded by an insulating cover 12 are connected. Since a part protruding forward from the front end of the electric wire crimped part 22 out of the conductor 11 exposed by removing the insulating cover 12 is covered by a covering part 30, there is no possibility of sticking of an electrolytic solution, and formation of electric corrosion due to sticking of the electrolytic solution can be prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、端子金具と電線の接続構造に関するものである。   The present invention relates to a connection structure between a terminal fitting and an electric wire.

特許文献１には、端子金具と電線の接続構造において、電線の軽量化を図るために、銅合金製の従来の導体に代えてアルミ製の導体を使用した技術が開示されている。この接続構造において、端子金具については、従来通りの銅合金が用いられている。
特開２００３−３１７８１７公報 Patent Document 1 discloses a technique in which an aluminum conductor is used in place of a conventional copper alloy conductor in order to reduce the weight of an electric wire in a connection structure between a terminal fitting and an electric wire. In this connection structure, a conventional copper alloy is used for the terminal fitting.
JP 2003-317817 A

上記のように電線の導体と端子金具とが異種の金属である場合には、両者の接続部分に水分等の電解液が介在すると電食、即ち両金属が電解液中にイオンとして溶け込んで電気化学的反応により腐食が進行する現象が発生する虞がある。電食が発生すると、導体と端子金具との間の接触抵抗が増大するため、対策が必要となる。   As described above, when the conductor of the electric wire and the terminal metal fitting are different metals, if an electrolytic solution such as moisture is present at the connection portion between the two, electrolytic corrosion, i.e., both metals dissolve as ions in the electrolytic solution and are electrically There is a possibility that a phenomenon of corrosion progresses due to a chemical reaction. When electric corrosion occurs, the contact resistance between the conductor and the terminal fitting increases, so a countermeasure is required.

本発明は上記のような事情に基づいて完成されたものであって、電線の導体と端子金具とが異種の金属である場合において、導体と端子金具との接続部分における電食の発生防止を図ることを目的とする。   The present invention has been completed based on the above circumstances, and in the case where the conductor of the electric wire and the terminal fitting are different metals, the prevention of the occurrence of electrolytic corrosion at the connection portion between the conductor and the terminal fitting. The purpose is to plan.

上記の目的を達成するための手段として、請求項１の発明は、端子金具に形成したオープンバレル状の電線圧着部と、前記端子金具とは異種の金属からなる導体を絶縁被覆で包囲した電線の前端部とを接続するための接続構造であって、前記端子金具には、前記絶縁被覆を除去して露出させた前記導体のうち前記電線圧着部の前端から前方へ突出した部分を覆う覆い部が設けられているところに特徴を有する。   As a means for achieving the above object, the invention of claim 1 is an electric wire in which an open barrel-shaped wire crimping portion formed on a terminal fitting and a conductor made of a metal different from the terminal fitting are surrounded by an insulating coating. A connection structure for connecting the front end portion of the conductor, wherein the terminal fitting covers a portion of the conductor exposed by removing the insulating coating and protruding forward from the front end of the wire crimping portion. It is characterized in that the part is provided.

請求項２の発明は、請求項１に記載のものにおいて、前記電線圧着部が、底板と、前記底板の左右両側縁から立ち上がる一対のカシメ片とを備えており、前記導体が、前記底板と前記一対のカシメ片とで包囲された状態で圧着されており、前記覆い部が、前記カシメ片の前端から前方へ延出した形態であるところに特徴を有する。   Invention of Claim 2 is the thing of Claim 1, The said electric wire crimping | compression-bonding part is provided with the baseplate and a pair of crimping piece which stands up from the right-and-left both-sides edge of the said baseplate, The said conductor is the said baseplate. The crimping is performed in a state of being surrounded by the pair of caulking pieces, and the cover part is characterized in that it has a form extending forward from the front end of the caulking pieces.

請求項３の発明は、請求項１または請求項２に記載のものにおいて、前記端子金具が、相手側端子との接続手段として機能する端子接続部と、前記端子接続部の後端と前記電線圧着部の前端とを連結する連結部とを有し、前記導体のうち前記電線圧着部から前方へ突出した部分が、前記連結部内に位置しており、前記覆い部が、前記連結部から延出した形態であるところに特徴を有する。   According to a third aspect of the present invention, in the device according to the first or second aspect, the terminal fitting functions as a connecting means for connecting with a mating terminal, a rear end of the terminal connecting portion, and the electric wire. A connecting portion that connects the front end of the crimping portion, a portion of the conductor that protrudes forward from the wire crimping portion is located in the connecting portion, and the cover portion extends from the connecting portion. It has a feature in the form that it comes out.

請求項４の発明は、請求項１ないし請求項３のいずれかに記載のものにおいて、前記電線圧着部が、前記導体が圧着により接続するワイヤバレル部と、前記ワイヤバレル部よりも後方に位置して前記電線のうち前記絶縁被覆で覆われている部分が圧着されるインシュレーションバレル部とを備えて構成され、前記電線圧着部には、前記ワイヤバレル部の後端から後方へ延出して前記絶縁被覆の前端部の外周に重なる形態の庇部が形成されているところに特徴を有する。   Invention of Claim 4 is a thing in any one of Claim 1 thru | or 3. WHEREIN: The said wire crimping | compression-bonding part is located behind the wire barrel part to which the said conductor connects by crimping, and the said wire barrel part And an insulation barrel portion to which a portion covered with the insulating coating of the electric wire is crimped. The wire crimping portion extends rearward from the rear end of the wire barrel portion. It is characterized in that a flange portion is formed so as to overlap the outer periphery of the front end portion of the insulating coating.

請求項５の発明は、請求項４に記載のものにおいて、前記庇部の後端が、前記インシュレーションバレル部に連なっているところに特徴を有する。   The invention of claim 5 is characterized in that, in the invention of claim 4, the rear end of the flange portion is continuous with the insulation barrel portion.

＜請求項１の発明＞
従来では、導体のうち電線圧着部の前端から前方へ突出した部分は、露出していて水等の電解液が付着し易いため、電食の発生し易い箇所であった。これに対し、本発明では、導体のうち電線圧着部の前端から前方へ突出した部分は、覆い部で覆われているので、電解液が付着する虞がなく、電解液の付着に起因する電食の発生を防止することができる。 <Invention of Claim 1>
Conventionally, the portion of the conductor that protrudes forward from the front end of the wire crimping portion has been exposed and an electrolytic solution such as water is liable to adhere to it, and thus has been subject to electrolytic corrosion. On the other hand, in the present invention, the portion of the conductor that protrudes forward from the front end of the wire crimping portion is covered with the covering portion, so that there is no possibility that the electrolytic solution adheres, and the electric current caused by the attachment of the electrolytic solution is present. The occurrence of food can be prevented.

＜請求項２の発明＞
覆い部がカシメ片と一体に形成されているので、覆い部とカシメ片との隙間から電解液が浸入して導体に付着する虞はない。 <Invention of Claim 2>
Since the cover part is formed integrally with the crimping piece, there is no possibility that the electrolyte enters from the gap between the cover part and the crimping piece and adheres to the conductor.

＜請求項３の発明＞
覆い部が連結部と一体に形成されているので、覆い部と連結部との隙間から電解液が浸入して導体に付着する虞はない。 <Invention of Claim 3>
Since the cover part is formed integrally with the connecting part, there is no possibility that the electrolyte enters from the gap between the cover part and the connecting part and adheres to the conductor.

＜請求項４の発明＞
導体のうちワイヤバレル部よりも後方において絶縁被覆が除去されている部分は、庇部によって覆い隠されるので、ワイヤバレル部とインシュレーションバレル部との隙間において電解液が導体に付着する虞はない。 <Invention of Claim 4>
The portion of the conductor from which the insulation coating is removed behind the wire barrel portion is covered by the flange portion, so that there is no possibility that the electrolyte adheres to the conductor in the gap between the wire barrel portion and the insulation barrel portion. .

＜請求項５の発明＞
庇部の後端がインシュレーションバレル部に連なっているので、庇部とインシュレーションバレル部との隙間に電解液が浸入する虞はない。 <Invention of Claim 5>
Since the rear end of the flange portion is continuous with the insulation barrel portion, there is no possibility that the electrolyte enters the gap between the flange portion and the insulation barrel portion.

＜実施形態１＞
以下、本発明を具体化した実施形態１を図１及び図２を参照して説明する。本実施形態１の電線１０は、電線１０は、複数本の金属細線を撚り合わせた撚り線からなる導体１１と、導体１１を包囲する絶縁被覆１２とから構成されている。電線１０の前端部においては、端子金具２０Ａとの接続準備として、予め、絶縁被覆１２が除去されることにより導体１１の前端部が露出した状態となっている。尚、導体１１の材料としては、アルミニウム球はアルミニウム合金が用いられている。この導体１１の材料の特性は、銅よりも剛性が高く、また銅よりも導電率の低いというものである。 <Embodiment 1>
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. The electric wire 10 according to the first embodiment includes an electric conductor 10 made of a stranded wire obtained by twisting a plurality of fine metal wires, and an insulating coating 12 surrounding the conductor 11. At the front end portion of the electric wire 10, the front end portion of the conductor 11 is exposed by removing the insulating coating 12 in advance in preparation for connection to the terminal fitting 20 </ b> A. As the material of the conductor 11, an aluminum alloy is used for the aluminum sphere. The property of the material of the conductor 11 is that it is more rigid than copper and has a lower conductivity than copper.

この電線１０の前端部には端子金具２０Ａが圧着により接続されている。端子金具２０Ａは、導体１１とは異種の金属（即ち、銅又は銅合金）からなり、所定形状に打ち抜いた金属板材（図示せず）に曲げ加工等を施すことによって形成されている。端子金具２０Ａは、雌形のものであり、前端側部分（図１及び図２における左側部分）は角筒状をなす端子接続部２１となっている。端子接続部２１は、雄形の相手端子の細長いタブ（図示せず）との接続手段として機能する周知形態のものである。   A terminal fitting 20A is connected to the front end portion of the electric wire 10 by crimping. The terminal fitting 20A is made of a metal different from the conductor 11 (ie, copper or copper alloy), and is formed by bending a metal plate material (not shown) punched into a predetermined shape. The terminal fitting 20A is of a female shape, and the front end side portion (the left side portion in FIGS. 1 and 2) is a terminal connecting portion 21 having a rectangular tube shape. The terminal connection portion 21 is of a well-known form that functions as a connection means with an elongated tab (not shown) of a male counterpart terminal.

端子接続部２１の後端には、連結部２２が連なっている。連結部２２は、端子接続部２１の底面壁に連なる平板状の底壁２３と、底壁２３の左右両側縁から略直角に立ち上がる左右対称な一対の側壁２４とから構成される。側壁２４の高さは、端子接続部２１よりも低い。かかる連結部２２の内部には、上方へ開放された収容空間２５が形成されている。   A connecting portion 22 is connected to the rear end of the terminal connecting portion 21. The connecting portion 22 includes a flat bottom wall 23 that is continuous with the bottom wall of the terminal connecting portion 21, and a pair of left and right symmetrical side walls 24 that rise substantially at right angles from the left and right side edges of the bottom wall 23. The height of the side wall 24 is lower than that of the terminal connection portion 21. An accommodation space 25 opened upward is formed inside the connecting portion 22.

連結部２２の後端には、電線１０の前端部を圧着するための電線圧着部２６が連なっている。電線圧着部２６の前端側部分はワイヤバレル部２７となっており、電線圧着部２６の後端側部分はインシュレーションバレル部２８となっている。ワイヤバレル部２７の後端とインシュレーションバレル部２８の前端とは繋ぎ部２９によって連なっている。繋ぎ部２９は、底面板２９ａの左右両側縁から左右対称な一対の側面板２９ｂを立ち上げた形態である。   An electric wire crimping portion 26 for crimping the front end portion of the electric wire 10 is connected to the rear end of the connecting portion 22. A front end side portion of the wire crimping portion 26 is a wire barrel portion 27, and a rear end side portion of the wire crimping portion 26 is an insulation barrel portion 28. The rear end of the wire barrel portion 27 and the front end of the insulation barrel portion 28 are connected by a connecting portion 29. The connecting portion 29 has a form in which a pair of laterally symmetrical side plates 29b are raised from the left and right side edges of the bottom plate 29a.

ワイヤバレル部２７は、導体１１の前端部を圧着するためのものであり、第１底板２７ａの左右両側縁から左右対称な一対の第１カシメ片２７ｂを延出させた形態である。ワイヤバレル部２７に圧着された導体１１は、第１底板２７ａと一対の第１カシメ片２７ｂとにより全周に亘って包囲されて加圧され、この加圧により生じた固着力によりワイヤバレル部２７に対して導通可能に固着される。圧着状態では、導体１１の前端部は、第１カシメ片２７ｂの前端縁よりも更に前方へ突出して連結部２２内の収容空間２５内に位置している。   The wire barrel portion 27 is for crimping the front end portion of the conductor 11, and has a form in which a pair of symmetrical first caulking pieces 27b are extended from the left and right side edges of the first bottom plate 27a. The conductor 11 crimped to the wire barrel portion 27 is surrounded and pressurized by the first bottom plate 27a and the pair of first caulking pieces 27b, and the wire barrel portion is caused by the fixing force generated by the pressurization. 27 is fixed to be conductive. In the crimped state, the front end portion of the conductor 11 protrudes further forward than the front end edge of the first caulking piece 27 b and is positioned in the accommodating space 25 in the connecting portion 22.

インシュレーションバレル部２８は、電線１０の前端部のうち絶縁被覆１２で覆われている部分を圧着するためのものであり、第２底板２８ａの左右両側縁から左右対称な一対の第２カシメ片２８ｂを延出させた形態である。インシュレーションバレル部２８に圧着された電線１０は、第２底板２８ａと一対の第２カシメ片２８ｂとにより全周に亘って包囲されて加圧され、この加圧により生じた固着力によりインシュレーションバレル部２８に固着される。   The insulation barrel portion 28 is for crimping a portion of the front end portion of the electric wire 10 that is covered with the insulating coating 12, and a pair of second caulking pieces that are symmetrical from the left and right side edges of the second bottom plate 28a. It is the form which extended 28b. The electric wire 10 crimped to the insulation barrel portion 28 is surrounded and pressurized by the second bottom plate 28a and the pair of second caulking pieces 28b, and is insulated by the fixing force generated by the pressurization. It is fixed to the barrel portion 28.

圧着状態では、絶縁被覆１２の前端部は、第２カシメ片２８ｂの前端縁よりも更に前方へ突出し、第１カシメ片２７ｂの後端縁よりも前方に位置する。前後方向において第１カシメ片２７ｂと第２カシメ片２８ｂとの間の領域（繋ぎ部２９と対応する領域）には、導体１１の露出部分の後端部と絶縁被覆１２の前端部とが位置している。   In the crimped state, the front end portion of the insulating coating 12 protrudes further forward than the front end edge of the second caulking piece 28b and is positioned forward of the rear end edge of the first caulking piece 27b. The rear end portion of the exposed portion of the conductor 11 and the front end portion of the insulating coating 12 are located in the region between the first caulking piece 27b and the second caulking piece 28b in the front-rear direction (the region corresponding to the connecting portion 29). is doing.

端子金具２０Ａには、絶縁被覆１２を除去して露出させた導体１１のうちワイヤバレル部２７の前端から前方へ突出した部分を覆うための覆い部３０が一体に形成されている。覆い部３０は、ワイヤバレル部２７の第１カシメ片２７ｂの前端縁、及び連結部２２の側壁２４の立ち上がり端縁（上端縁）に連なっている。つまり、覆い部３０は、第１カシメ片２７ｂから前方へ延出し、導体１１の前端部の外周を上方から覆っているとともに、導体１１の前端面を前方から覆っている。   The terminal fitting 20 </ b> A is integrally formed with a cover portion 30 for covering a portion of the conductor 11 exposed by removing the insulating coating 12 and protruding forward from the front end of the wire barrel portion 27. The cover portion 30 is connected to the front end edge of the first caulking piece 27 b of the wire barrel portion 27 and the rising end edge (upper end edge) of the side wall 24 of the connecting portion 22. That is, the cover portion 30 extends forward from the first caulking piece 27b, covers the outer periphery of the front end portion of the conductor 11 from above, and covers the front end surface of the conductor 11 from the front.

さらに、電線圧着部２６には、ワイヤバレル部２７の第１カシメ片２７ｂの後端から後方へ延出して絶縁被覆１２の前端部の外周に重なる形態の庇部３１が一体に形成されている。庇部３１は、第１カシメ片２７ｂの後端縁、第２カシメ片２８ｂの前端縁及び繋ぎ部２９の側面板２９ｂの立ち上がり端縁（上端縁）に連なっている。したがって、ワイヤバレル部２７とインシュレーションバレル部２８との間では、導体１１と絶縁被覆１２は完全に覆われて外部には露出していない。   Further, the wire crimping portion 26 is integrally formed with a flange portion 31 that extends rearward from the rear end of the first caulking piece 27 b of the wire barrel portion 27 and overlaps the outer periphery of the front end portion of the insulating coating 12. . The flange 31 is continuous with the rear end edge of the first caulking piece 27b, the front end edge of the second caulking piece 28b, and the rising end edge (upper end edge) of the side plate 29b of the connecting portion 29. Therefore, between the wire barrel portion 27 and the insulation barrel portion 28, the conductor 11 and the insulating coating 12 are completely covered and are not exposed to the outside.

従来では、導体のうち電線圧着部の前端から前方へ突出した部分は、露出していて水等の電解液が付着し易いため、電食の発生し易い箇所であった。これに対し、本実施形態１では、導体１１のうち電線圧着部２６の前端から前方へ突出した部分を覆い部３０で覆っているので、導体１１の前端部（ワイヤバレル部２７から前方へ突出した部分）には、電解液が付着する虞がなく、電解液の付着に起因する電食の発生を防止することができる。   Conventionally, the portion of the conductor that protrudes forward from the front end of the wire crimping portion has been exposed and an electrolytic solution such as water is liable to adhere to it, and thus has been subject to electrolytic corrosion. On the other hand, in this Embodiment 1, since the part which protruded ahead from the front end of the electric wire crimping part 26 among the conductors 11 is covered with the cover part 30, the front end part (it protrudes ahead from the wire barrel part 27) of the conductor 11 is covered. There is no risk that the electrolytic solution adheres to the portion), and the occurrence of electrolytic corrosion due to the adhesion of the electrolytic solution can be prevented.

特に、本実施形態では覆い部３０の後端が第１カシメ片２７ｂに連なっているとともに、覆い部３０の側縁が連結部２２の側壁２４に連なっているので、覆い部３０と第１カシメ片２７ｂとの隙間においても、覆い部３０と側壁２４との間においても、電解液の浸入が確実に防止されている。   In particular, in the present embodiment, the rear end of the cover portion 30 is continuous with the first caulking piece 27b, and the side edge of the cover portion 30 is continuous with the side wall 24 of the connecting portion 22. Therefore, the cover portion 30 and the first caulking portion are connected. Intrusion of the electrolytic solution is surely prevented even in the gap with the piece 27 b and between the cover portion 30 and the side wall 24.

また、ワイヤバレル部２７とインシュレーションバレル部２８との間に庇部３１を形成し、導体１１と絶縁被覆１２が露出しないようにしているので、ワイヤバレル部２７とインシュレーションバレル部２８との隙間から電解液が浸入する虞はない。特に、庇部３１の前端が第１カシメ片２７ｂに連なり、庇部３１の後端が第２カシメ片２８ｂに連なり、庇部３１の側縁が側面板２９ｂに連なっているので、電解液の浸入が確実に防止されている。   Further, since the flange portion 31 is formed between the wire barrel portion 27 and the insulation barrel portion 28 so that the conductor 11 and the insulating coating 12 are not exposed, the wire barrel portion 27 and the insulation barrel portion 28 are not exposed. There is no risk of electrolyte intrusion from the gap. In particular, the front end of the flange 31 is connected to the first crimping piece 27b, the rear end of the flange 31 is connected to the second crimping piece 28b, and the side edge of the flange 31 is connected to the side plate 29b. Intrusion is reliably prevented.

＜実施形態２＞
次に、本発明を具体化した実施形態２を図３及び図４を参照して説明する。本実施形態２の端子金具２０Ｂは、覆い部３２と庇部３４を上記実施形態１とは異なる構成としたものである。その他の構成については上記実施形態１と同じであるため、同じ構成については、同一符号を付し、構造、作用及び効果の説明は省略する。 <Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the terminal fitting 20B of the second embodiment, the cover portion 32 and the collar portion 34 are configured differently from the first embodiment. Since other configurations are the same as those of the first embodiment, the same configurations are denoted by the same reference numerals, and descriptions of structures, operations, and effects are omitted.

本実施形態２の覆い部３２は、ワイヤバレル部２７の第１カシメ片２７ｂの前端縁から前方へ延出した形態であり、連結部２２の側壁２４には直接連なってはいない。かかる覆い部３２は、導体１１の前端部の外周を上方から覆っているとともに、導体１１の前端面を前方から覆っている。また、覆い部３２の前端側部分は、前方に向かって底壁２３に接近するように前傾した傾斜部３３となっている。この傾斜部３３は左右両側壁２４の間に位置し、傾斜部３３の前端側部分は、収容空間２５内に収容されて導体１１を前方から覆っている。一方、第１カシメ片２７ｂの後端から後方へ延出して絶縁被覆１２の前端部の外周に重なる庇部３４は、第１カシメ片２７ｂの後端縁と繋ぎ部２９の側面板２９ｂの立ち上がり端縁（上端縁）の前端側領域に連なっているが、第２カシメ片２８ｂには直接連なってはいない。したがって、庇部３４の後端と第２カシメ片２８ｂとの間には、絶縁被覆１２の一部が露出している。   The cover part 32 of the second embodiment is a form extending forward from the front end edge of the first caulking piece 27 b of the wire barrel part 27, and is not directly connected to the side wall 24 of the connecting part 22. The cover portion 32 covers the outer periphery of the front end portion of the conductor 11 from above and covers the front end surface of the conductor 11 from the front. Further, the front end side portion of the cover portion 32 is an inclined portion 33 inclined forward so as to approach the bottom wall 23 toward the front. The inclined portion 33 is located between the left and right side walls 24, and the front end side portion of the inclined portion 33 is accommodated in the accommodating space 25 and covers the conductor 11 from the front. On the other hand, the flange 34 extending rearward from the rear end of the first caulking piece 27b and overlapping the outer periphery of the front end portion of the insulating coating 12 rises from the rear end edge of the first caulking piece 27b and the side plate 29b of the connecting portion 29. Although it continues to the front end side region of the end edge (upper end edge), it does not continue directly to the second crimping piece 28b. Therefore, a part of the insulating coating 12 is exposed between the rear end of the flange 34 and the second crimping piece 28b.

＜実施形態３＞
次に、本発明を具体化した実施形態３を図５乃至図７を参照して説明する。本実施形態３の端子金具２０Ｃは、覆い部３２を上記実施形態２と同じ形態としたものであり、また、庇部を有していないという点において実施形態１及び実施形態２とは相違している。また、覆い部３２の略前半領域（前端側領域）は、前方に向かって連結部２２の底壁２３に接近するように前傾した傾斜部３３となっているが、導体１１の前端面１１Ｆは、傾斜部３３に合わせて斜めに切断されている。そして、この導体１１の斜めに切断された前端面１１Ｆは、覆い部３２の傾斜部３３に対して後方から突き当たるように当接している。その他の構成については上記実施形態１又は実施形態２と同じであるため、同じ構成については、同一符号を付し、構造、作用及び効果の説明は省略する。 <Embodiment 3>
Next, a third embodiment of the present invention will be described with reference to FIGS. The terminal fitting 20C of the third embodiment is different from the first and second embodiments in that the cover portion 32 has the same form as that of the second embodiment and does not have a collar portion. ing. In addition, the substantially front half region (front end side region) of the cover portion 32 is an inclined portion 33 that is inclined forward so as to approach the bottom wall 23 of the connecting portion 22 toward the front. Are cut obliquely according to the inclined portion 33. The front end surface 11F of the conductor 11 cut obliquely is in contact with the inclined portion 33 of the cover portion 32 so as to abut from the rear. Since other configurations are the same as those in the first embodiment or the second embodiment, the same components are denoted by the same reference numerals, and descriptions of the structure, operation, and effects are omitted.

＜実施形態４＞
次に、本発明を具体化した実施形態４を図８及び図９を参照して説明する。本実施形態４の端子金具２０Ｄは、覆い部３５を上記実施形態１〜３とは異なる構成とし、実施形態２と同じ形態の庇部３４を形成したものである。本実施形態４の覆い部３５は、連結部２２の左右両側壁２４に一体に形成されている。覆い部３５の前端側部分（略前半領域）は、前方に向かって連結部２２の底壁２３に接近するように傾斜した傾斜部３６となっている。傾斜部３６は、連結部２２の収容空間２５内に配され、前方から導体１１を覆うように位置する。覆い部３５の側縁における略後半領域は、側壁２４の立ち上がり端縁に連なっているが、覆い部３５の側縁における略前半領域（即ち、傾斜部３６の側縁）は、側壁２４の立ち上がり端縁とは直接連なってはいない。また、覆い部３５は、ワイヤバレル部２７の第１カシメ片２７ｂとは直接連なってはいない。その他の構成については上記実施形態１又は実施形態２と同じであるため、同じ構成については、同一符号を付し、構造、作用及び効果の説明は省略する。 <Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIGS. In the terminal fitting 20D of the fourth embodiment, the cover portion 35 is configured differently from the first to third embodiments, and the flange portion 34 having the same form as that of the second embodiment is formed. The cover portion 35 of the fourth embodiment is integrally formed on the left and right side walls 24 of the connecting portion 22. The front end side portion (substantially the first half region) of the cover portion 35 is an inclined portion 36 that is inclined so as to approach the bottom wall 23 of the connecting portion 22 toward the front. The inclined portion 36 is disposed in the accommodating space 25 of the connecting portion 22 and is positioned so as to cover the conductor 11 from the front. The substantially second half region at the side edge of the cover portion 35 continues to the rising edge of the side wall 24, but the substantially first half region at the side edge of the cover portion 35 (that is, the side edge of the inclined portion 36) rises. It is not directly connected to the edge. Further, the cover portion 35 is not directly connected to the first caulking piece 27 b of the wire barrel portion 27. Since other configurations are the same as those in the first embodiment or the second embodiment, the same components are denoted by the same reference numerals, and descriptions of the structure, operation, and effects are omitted.

＜他の実施形態＞
本発明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、例えば次のような実施態様も本発明の技術的範囲に含まれる。
（１）上記実施形態１〜４では、覆い部を端子金具に一体に形成したが、覆い部は、端子金具とは別体の部品であってもよい。
（２）実施形態１の覆い部がワイヤバレル部と連結部の両方に連なった形態は、実施形態２〜４にも適用できる。
（３）実施形態１の庇部がインシュレーションバレル部に連なった形態は、実施形態２〜４にも適用できる。
（４）実施形態２の庇部とインシュレーションバレル部とが直接連なっていない形態は、実施形態１にも適用できる。
（５）実施形態２，３の覆い部と連結部とが直接連なっていない形態は、実施形態１にも適用できる。
（６）実施形態１，２，４の庇部を形成する形態は、実施形態３にも適用できる。
（７）実施形態４の覆い部がワイヤバレル部と直接連なっていない形態は、実施形態１〜３にも適用できる。
（８）実施形態３の覆い部が導体の前端面に当接する形態は、実施形態１，２，４にも適用できる。
（９）実施形態３の導体の前端面を電線の軸線に対して斜めにする形態は、実施形態１，２，４にも適用できる。
（１０）上記実施形態１〜４では端子接続部が角筒状をなす雌形の端子金具について説明したが、本発明は、端子接続部が細長いタブを有する雄形の端子金具にも適用できる。
（１１）上記実施形態では導体を撚り線としたが、本発明は、導体が単芯線である場合にも適用できる。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Embodiments 1 to 4 described above, the cover is formed integrally with the terminal fitting, but the cover may be a separate component from the terminal fitting.
(2) The form in which the cover part of Embodiment 1 continues to both the wire barrel part and the connecting part can also be applied to Embodiments 2 to 4.
(3) The form which the collar part of Embodiment 1 continued to the insulation barrel part is applicable also to Embodiments 2-4.
(4) The form in which the collar part and the insulation barrel part of Embodiment 2 are not directly connected can also be applied to Embodiment 1.
(5) The form in which the cover part and the connection part of Embodiments 2 and 3 are not directly connected can also be applied to Embodiment 1.
(6) The form which forms the collar part of Embodiment 1, 2, 4 is applicable also to Embodiment 3. FIG.
(7) The form in which the cover part of Embodiment 4 is not directly connected to the wire barrel part can also be applied to Embodiments 1 to 3.
(8) The form in which the cover portion of the third embodiment contacts the front end surface of the conductor can also be applied to the first, second, and fourth embodiments.
(9) The configuration in which the front end face of the conductor of the third embodiment is inclined with respect to the axis of the electric wire can be applied to the first, second, and fourth embodiments.
(10) In the first to fourth embodiments, the female terminal fitting in which the terminal connecting portion has a rectangular tube shape has been described. However, the present invention can also be applied to a male terminal fitting in which the terminal connecting portion has an elongated tab. .
(11) Although the conductor is a stranded wire in the above embodiment, the present invention can also be applied when the conductor is a single core wire.

実施形態１の側面図Side view of Embodiment 1 平面図Plan view 実施形態２の側面図Side view of Embodiment 2 平面図Plan view 実施形態３の側面図Side view of Embodiment 3 平面図Plan view 一部切欠断面図Partial cutaway view 実施形態４の側面図Side view of Embodiment 4 平面図Plan view

符号の説明Explanation of symbols

１０…電線
１１…導体
１２…絶縁被覆
２０Ａ…端子金具
２１…端子接続部
２２…連結部
２６…電線圧着部
２７…ワイヤバレル部
２７ａ…第１底板
２７ｂ…第１カシメ片
２９…インシュレーションバレル部
３０…覆い部
３１…庇部
２０Ｂ，２０Ｃ，２０Ｄ…端子金具
３２，３５…覆い部
３４…庇部 DESCRIPTION OF SYMBOLS 10 ... Electric wire 11 ... Conductor 12 ... Insulation coating 20A ... Terminal metal fitting 21 ... Terminal connection part 22 ... Connection part 26 ... Electric wire crimping part 27 ... Wire barrel part 27a ... 1st bottom plate 27b ... 1st crimping piece 29 ... Insulation barrel part DESCRIPTION OF SYMBOLS 30 ... Cover part 31 ... Gutter part 20B, 20C, 20D ... Terminal metal fitting 32, 35 ... Cover part 34 ... Gutter part

Claims (5)

端子金具に形成したオープンバレル状の電線圧着部と、前記端子金具とは異種の金属からなる導体を絶縁被覆で包囲した電線の前端部とを接続するための接続構造であって、
前記端子金具には、前記絶縁被覆を除去して露出させた前記導体のうち前記電線圧着部の前端から前方へ突出した部分を覆う覆い部が設けられていることを特徴とする端子金具と電線の接続構造。 A connection structure for connecting an open barrel-shaped wire crimping portion formed on a terminal fitting and a front end portion of an electric wire in which the terminal fitting surrounds a conductor made of a different metal with an insulating coating,
The terminal fitting is provided with a covering portion for covering a portion of the conductor exposed by removing the insulating coating and projecting forward from the front end of the wire crimping portion. Connection structure. 前記電線圧着部が、底板と、前記底板の左右両側縁から立ち上がる一対のカシメ片とを備えており、
前記導体が、前記底板と前記一対のカシメ片とで包囲された状態で圧着されており、
前記覆い部が、前記カシメ片の前端から前方へ延出した形態であることを特徴とする請求項１記載の端子金具と電線の接続構造。 The electric wire crimping portion includes a bottom plate and a pair of caulking pieces rising from left and right side edges of the bottom plate;
The conductor is crimped in a state surrounded by the bottom plate and the pair of caulking pieces,
The terminal metal fitting and electric wire connection structure according to claim 1, wherein the cover portion has a form extending forward from a front end of the caulking piece. 前記端子金具が、相手側端子との接続手段として機能する端子接続部と、前記端子接続部の後端と前記電線圧着部の前端とを連結する連結部とを有し、
前記導体のうち前記電線圧着部から前方へ突出した部分が、前記連結部内に位置しており、
前記覆い部が、前記連結部から延出した形態であることを特徴とする請求項１又は請求項２記載の端子金具と電線の接続構造。 The terminal fitting has a terminal connecting portion that functions as a connection means with a mating terminal, and a connecting portion that connects a rear end of the terminal connecting portion and a front end of the wire crimping portion;
The portion of the conductor that protrudes forward from the wire crimping portion is located in the connecting portion,
The terminal metal fitting and electric wire connection structure according to claim 1, wherein the cover portion is extended from the connecting portion. 前記電線圧着部が、前記導体が圧着により接続するワイヤバレル部と、前記ワイヤバレル部よりも後方に位置して前記電線のうち前記絶縁被覆で覆われている部分が圧着されるインシュレーションバレル部とを備えて構成され、
前記電線圧着部には、前記ワイヤバレル部の後端から後方へ延出して前記絶縁被覆の前端部の外周に重なる形態の庇部が形成されていることを特徴とする請求項１ないし請求項３のいずれか１項に記載の端子金具と電線の接続構造。 The wire crimping portion is a wire barrel portion to which the conductor is connected by crimping, and an insulation barrel portion in which a portion of the wire covered with the insulating coating is crimped and positioned behind the wire barrel portion. And configured with
The hook portion is formed in the wire crimping portion so as to extend rearward from the rear end of the wire barrel portion and overlap the outer periphery of the front end portion of the insulating coating. 4. The terminal metal fitting and electric wire connection structure according to any one of 3 above. 前記庇部の後端が、前記インシュレーションバレル部に連なっていることを特徴とする請求項４記載の端子金具と電線の接続構造。   The terminal fitting and electric wire connection structure according to claim 4, wherein a rear end of the flange portion is continuous with the insulation barrel portion.
JP2008218190A 2008-08-07 2008-08-27 Connection structure of terminal metal fitting and electric wire Pending JP2010055874A (en)

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JP2008218190A JP2010055874A (en) 2008-08-27 2008-08-27 Connection structure of terminal metal fitting and electric wire
EP12001358A EP2482384A3 (en) 2008-08-07 2009-06-18 A terminal fitting and a crimping method
EP09008007A EP2151893A1 (en) 2008-08-07 2009-06-18 A terminal fitting and a crimping method
CN 200910139926 CN101645543B (en) 2008-08-07 2009-07-15 A terminal fitting and a crimping method
US12/504,476 US7828611B2 (en) 2008-08-07 2009-07-16 Terminal fitting

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