JP2010050051A

JP2010050051A - Terminal metal fitting

Info

Publication number: JP2010050051A
Application number: JP2008215863A
Authority: JP
Inventors: Masayoshi Takatsu; 正義高津
Original assignee: Sumitomo Wiring Systems Ltd
Current assignee: Sumitomo Wiring Systems Ltd
Priority date: 2008-08-25
Filing date: 2008-08-25
Publication date: 2010-03-04

Abstract

<P>PROBLEM TO BE SOLVED: To keep a stable connection state between an electric wire and a wire barrel by setting up the proper value of a fixing strength of the wire barrel to be exerted on a core wire of the electric wire. <P>SOLUTION: A terminal metal fitting 10 includes a wire barrel 13 to be connected with a core wire 91 of an electric wire 90. The wire barrel 13 has a blade-shaped crimp part 17 that is located at a position edging near a terminal on the electric wire 90 to be connected with the core wire 91 in a crimping state, and a barrel-shaped clamp part 18 that is located at a position away from the terminal on the electric wire 90 farther than the crimp part 17 to be caulked to the core wire 91. The crimp part 17 has a pair of crimping blades 25 that cut an insulating clad 92 on the electric wire 90 to be connected with the internal core wire 91. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、端子金具に関する。 The present invention relates to a terminal fitting.

従来の端子金具として、軸方向に延びる基板部と、基板部の前端部に位置して角筒状の折り曲げられる本体部と、基板部の中間部に位置して電線の端末にて露出された芯線に圧着されるワイヤバレルと、基板部の後端部に位置して電線の絶縁被覆に圧着されるインシュレーションバレルとを備えた端子金具が知られている。本体部は相手側端子金具と導通接続され、ワイヤバレルは電線の芯線と導通接続される。そして、端子金具がアルミニウム系の芯線を有するアルミ電線に接続される場合も知られている（例えば、特許文献１を参照）。
特開２００３−２１７７８４公報 As a conventional terminal fitting, a board part extending in the axial direction, a main body part that is bent at a front end part of the board part, and is bent at a front end part of the board part, and is located at an intermediate part of the board part and exposed at the end of the electric wire There is known a terminal fitting including a wire barrel that is crimped to a core wire and an insulation barrel that is located at the rear end of the substrate portion and is crimped to an insulating coating of an electric wire. The main body is conductively connected to the mating terminal fitting, and the wire barrel is conductively connected to the core of the electric wire. It is also known that the terminal fitting is connected to an aluminum electric wire having an aluminum-based core wire (see, for example, Patent Document 1).
JP 2003-217784 A

ところで、アルミ電線は、銅電線に比べて機械的強度が低く、また芯線の表面に絶縁性の酸化被膜を形成し易いという特性をもっている。この場合、ワイヤバレルの圧着力を高くすれば、酸化被膜を破壊することができるものの、芯線が断絶などして電線の保持力が低下する可能性があり、一方で、ワイヤバレルの圧着力を低くすれば、電線の保持力が低下するのを防止できるものの、酸化被膜を破壊することができない可能性がある。つまり、酸化被膜の破壊と電線保持力の低下防止の両方を満足させる単一の圧着力を見出すのは実質的に難しいという事情がある。また、ワイヤバレルのアルミ電線への圧着に際しては、酸化被膜を破壊するために銅電線の場合よりも大きな固着力が必要とされるため、ワイヤバレルの圧着動作に伴って端子金具が長さ方向に伸長し、最悪の場合、端子金具の後端がキャビティの外側へ飛び出すおそれがある。 By the way, an aluminum electric wire has the characteristics that mechanical strength is low compared with a copper electric wire, and an insulating oxide film is easily formed on the surface of a core wire. In this case, if the crimping force of the wire barrel is increased, the oxide film can be destroyed, but there is a possibility that the holding force of the wire will be reduced due to disconnection of the core wire. If it is lowered, the holding power of the electric wire can be prevented from decreasing, but the oxide film may not be destroyed. That is, it is practically difficult to find a single crimping force that satisfies both the destruction of the oxide film and the prevention of the decrease in the electric wire holding force. In addition, when crimping the wire barrel to the aluminum wire, a larger fixing force is required than the copper wire in order to break the oxide film, so the terminal metal fitting in the length direction is accompanied by the crimping operation of the wire barrel. In the worst case, the rear end of the terminal fitting may jump out of the cavity.

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、電線の芯線に対するワイヤバレルの固着力を適正値に設定して、電線とワイヤバレルとの安定した接続状態を保つことを目的とする。 The present invention has been completed on the basis of the above situation, and the wire barrel fixing force with respect to the core wire of the electric wire is set to an appropriate value to maintain a stable connection state between the electric wire and the wire barrel. Objective.

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、電線の芯線に接続されるワイヤバレルを備えた端子金具であって、前記ワイヤバレルは、前記電線の端末寄りに位置して、前記芯線に圧接状態で接続される刃状の圧接部と、この圧接部よりも前記電線の端末から離れて位置して、前記芯線にかしめ付けられるバレル状の圧着部とを有している構成としたところに特徴を有する。 As a means for achieving the above object, the invention of claim 1 is a terminal fitting provided with a wire barrel connected to a core wire of an electric wire, wherein the wire barrel is located closer to an end of the electric wire. And a blade-like pressure contact portion connected to the core wire in a pressure contact state, and a barrel-shaped crimping portion that is positioned farther from the end of the electric wire than the pressure contact portion and is crimped to the core wire. It is characterized by its configuration.

請求項２の発明は、請求項１に記載のものにおいて、前記圧接部は、前記電線の絶縁被覆を切開して内部の前記芯線に接続される一対の圧接刃を有しているところに特徴を有する。 According to a second aspect of the present invention, in the first aspect of the present invention, the press contact portion includes a pair of press contact blades that are cut through the insulating coating of the electric wire and connected to the core wire inside. Have

請求項３の発明は、請求項２に記載のものにおいて、前記電線の端末が前記絶縁被覆で覆われているところに特徴を有する。 The invention of claim 3 is characterized in that, in the invention of claim 2, the end of the electric wire is covered with the insulating coating.

請求項４の発明は、請求項１ないし３のいずれか１項記載のものにおいて、前記ワイヤバレルの底部を構成するとともに、前記電線を支持する基板部が軸方向に延出して設けられ、前記基板部には、前記圧着部の底部を挟んだ両側に、この底部の伸長変形を吸収可能な変形吸収部が設けられているところに特徴を有する。 According to a fourth aspect of the present invention, in the one according to any one of the first to third aspects, the base portion of the wire barrel is formed, and the substrate portion that supports the electric wire is provided extending in the axial direction. The substrate portion is characterized in that a deformation absorbing portion capable of absorbing the extension deformation of the bottom portion is provided on both sides of the bottom portion of the crimping portion.

＜請求項１の発明＞
刃状の圧接部が電線に圧接状態で接続されることにより、ワイヤバレルと芯線とが電気的に確実に接続される。この場合、電線がアルミニウム又はアルミニウム合金からなるアルミニウム素線を撚り合せた芯線を有するアルミ電線であると、芯線の表面に形成された酸化アルミニウムからなる絶縁性の酸化被膜が刃状の圧接部によって破壊されるため、接触抵抗が低くなり、接続信頼性が高められる。また、バレル状の圧着部が適度な圧着力をもって芯線にかしめ付けられることにより、芯線が圧着部に確実に保持される。したがって、本発明によれば、電線の芯線に対するワイヤバレルの固着力が適正値に設定されて、電線とワイヤバレルとの機械的及び電気的な接続状態の安定性が確保される。 <Invention of Claim 1>
By connecting the blade-like pressure contact portion to the electric wire in a pressure contact state, the wire barrel and the core wire are electrically and reliably connected. In this case, when the electric wire is an aluminum electric wire having a core wire obtained by twisting an aluminum element wire made of aluminum or an aluminum alloy, an insulating oxide film made of aluminum oxide formed on the surface of the core wire is formed by the blade-like pressure contact portion. Since it is destroyed, the contact resistance is lowered and the connection reliability is improved. Further, the barrel-shaped crimping portion is caulked to the core wire with an appropriate crimping force, so that the core wire is securely held by the crimping portion. Therefore, according to the present invention, the fixing force of the wire barrel to the core wire of the electric wire is set to an appropriate value, and the stability of the mechanical and electrical connection state between the electric wire and the wire barrel is ensured.

＜請求項２の発明＞
圧接部が電線の絶縁被覆を切開する一対の圧接刃を有しているため、圧接刃と芯線との接続部分の周りが絶縁被覆によって保護される。 <Invention of Claim 2>
Since the press contact portion has a pair of press contact blades that cut through the insulation coating of the electric wire, the periphery of the connection portion between the press contact blade and the core wire is protected by the insulation coating.

＜請求項３の発明＞
電線の端末が絶縁被覆によって覆われているため、圧着部の圧着動作に伴って電線の端末における芯線が跳ね上がるのが抑えられ、芯線と周辺部品との干渉が回避される。 <Invention of Claim 3>
Since the end of the electric wire is covered with the insulating coating, the core wire at the end of the electric wire is prevented from jumping up with the crimping operation of the crimping portion, and interference between the core wire and peripheral components is avoided.

＜請求項４の発明＞
基板部には圧着部の底部を挟んだ両側に変形吸収部が設けられているため、圧着部の圧着動作に伴って底部が伸長変形したときに、変形吸収部によってその変形が吸収され、端子金具の全長が伸長するのが抑えられる。その結果、端子金具がコネクタハウジングのキャビティ内に挿入されたときに、端子金具の端部がキャビティの外側へ飛び出す事態が回避される。 <Invention of Claim 4>
Since the deformation absorbing portions are provided on both sides of the base portion of the crimping portion, the deformation absorbing portion absorbs the deformation when the bottom portion expands and deforms with the crimping operation of the crimping portion, and the terminal Extension of the entire length of the metal fitting is suppressed. As a result, when the terminal fitting is inserted into the cavity of the connector housing, a situation where the end of the terminal fitting jumps out of the cavity is avoided.

＜実施形態１＞
本発明の実施形態１を図１ないし図３によって説明する。本実施形態に係る端子金具１０は、銅又は銅合金からなる導電性の金属板を曲げ加工などして一体に成形され、電線９０の端末に接続されている。電線９０は、アルミニウム又はアルミニウム合金からなるアルミニウム素線を撚り合せた芯線９１と、芯線９１の周りを覆う樹脂製の絶縁被覆９２とによって構成されている。本実施形態の場合、電線９０は、その端末にて絶縁被覆９２を有する第１被覆部９３と、第１被覆部９３の後方に位置して絶縁被覆９２の皮剥ぎによって露出された芯線露出部９４と、芯線露出部９４の後方に位置して絶縁被覆９２を有する第２被覆部９５とによって構成されている。この場合、第２被覆部９５は電線９０の絶縁被覆９２の大部を占有しており、第１被覆部９３は電線９０の端末に残留する絶縁被覆９２を有するに過ぎない。 <Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The terminal fitting 10 according to the present embodiment is integrally formed by bending a conductive metal plate made of copper or a copper alloy and connected to the end of the electric wire 90. The electric wire 90 includes a core wire 91 in which aluminum strands made of aluminum or an aluminum alloy are twisted together, and a resin insulating coating 92 that covers the periphery of the core wire 91. In the case of the present embodiment, the electric wire 90 includes a first covering portion 93 having an insulating coating 92 at the end thereof, and a core wire exposed portion that is located behind the first covering portion 93 and is exposed by skinning the insulating coating 92. 94 and a second covering portion 95 having an insulating covering 92 located behind the core wire exposed portion 94. In this case, the second covering portion 95 occupies most of the insulating covering 92 of the electric wire 90, and the first covering portion 93 only has the insulating covering 92 remaining at the end of the electric wire 90.

そして、端子金具１０は、前後方向に細長く延びる帯板状の基板部１１と、基板部１１の前端部に位置して角筒状の折り曲げられる本体部１２と、基板部１１の中間部に位置して電線９０の芯線９１に接続されるワイヤバレル１３と、基板部１１の後端部に位置して電線９０の絶縁被覆９２に接続されるインシュレーションバレル１４とを備えている。 The terminal fitting 10 is positioned at an intermediate portion of the base plate portion 11 which is elongated in the front-rear direction, a main body portion 12 which is positioned at the front end portion of the base plate portion 11 and is bent in a square tube shape. Then, the wire barrel 13 connected to the core 91 of the electric wire 90 and the insulation barrel 14 connected to the insulating coating 92 of the electric wire 90 located at the rear end portion of the substrate portion 11 are provided.

基板部１１は、本体部１２、ワイヤバレル１３及びインシュレーションバレル１４の底部を構成するものであって、ワイヤバレル１３及びインシュレーションバレル１４の両上面が電線９０を支持する支持面１５として構成されている。本体部１２は、前方から相手側端子金具（図示せず）を受け入れ可能とされ、その内部に、相手側端子金具と弾性的に接触可能な接触片（図示せず）が設けられている。
インシュレーションバレル１４は、オープンバレル状であって、図２に示すように、互いに対向する一対のバレル片１６を有している。両バレル片１６は第２被覆部９５にその両側から巻き付けられるようになっている。 The substrate part 11 constitutes the bottom part of the main body part 12, the wire barrel 13 and the insulation barrel 14, and both upper surfaces of the wire barrel 13 and the insulation barrel 14 are configured as support surfaces 15 that support the electric wires 90. ing. The main body 12 can receive a mating terminal fitting (not shown) from the front, and a contact piece (not shown) capable of elastically contacting the mating terminal fitting is provided therein.
The insulation barrel 14 has an open barrel shape and includes a pair of barrel pieces 16 facing each other as shown in FIG. Both barrel pieces 16 are wound around the second covering portion 95 from both sides.

ワイヤバレル１３は、前側にあって第１被覆部９３と対応位置する圧接部１７と、後側にあって芯線露出部９４と対応位置する圧着部１８とに、軸方向に間隔をあけて分割して配置されている。本体部１２、圧接部１７及び圧着部１８は、基板部１１の幅方向（軸直交方向）両端から軸方向に沿って立ち上げられた一対の側板部１９を共用している。 The wire barrel 13 is divided into a pressure contact portion 17 located on the front side and corresponding to the first covering portion 93 and a crimping portion 18 located on the rear side and corresponding to the core wire exposed portion 94 with an axial interval therebetween. Are arranged. The main body portion 12, the press contact portion 17, and the pressure bonding portion 18 share a pair of side plate portions 19 that are raised along the axial direction from both ends in the width direction (axial orthogonal direction) of the substrate portion 11.

圧着部１８は、インシュレーションバレル１４と同様、オープンバレル状であって、互いに対向する一対の圧着片２１を有している。両圧着片２１は両バレル片１６よりも低い高さをもって芯線露出部９４にその両側から巻き付けられるようになっている。この場合、圧着部１８の圧着力は、一般的に銅電線（銅又は銅合金からなる銅素線を撚り合せた芯線を有する電線）の芯線に圧着される場合とほぼ同じであり、仮に芯線９１の表面に酸化アルミニウムからなる絶縁性の酸化被膜が形成されていたとしても、この酸化被膜を完全に破壊するには至らないものの、芯線９１の断絶が防止される範囲の大きさに設定されている。つまり、この圧着部１８では、芯線露出部９４との電気的接触はあまり期待されておらず、代わりに芯線９１へのワイヤバレル１３の保持力確保に重点が置かれている。 Similar to the insulation barrel 14, the crimping portion 18 has an open barrel shape and has a pair of crimping pieces 21 facing each other. Both the crimping pieces 21 are wound around the core wire exposed portion 94 from both sides with a height lower than that of the two barrel pieces 16. In this case, the crimping force of the crimping part 18 is generally the same as when crimped to a core wire of a copper electric wire (an electric wire having a core wire formed by twisting a copper wire made of copper or a copper alloy). Even if an insulating oxide film made of aluminum oxide is formed on the surface of 91, this oxide film cannot be completely destroyed, but it is set to a size within a range that prevents disconnection of core wire 91. ing. That is, in this crimping portion 18, electrical contact with the core wire exposed portion 94 is not expected so much, and instead, emphasis is placed on securing the holding force of the wire barrel 13 to the core wire 91.

また、基板部１１には、図１に示すように、圧着部１８の底部を挟んだ前後両側に、詳細には圧着部１８と圧接部１７の両底部間及び圧着部１８とインシュレーションバレル１４の両底部間に、圧着部１８の圧着動作に伴う底部の伸長変形を吸収する一対の変形吸収部２３が設けられている。この変形吸収部２３は、基板部１１から両側板部１９にかけて幅方向に延びるとともに板厚方向に貫通するスリット孔として構成されている。 Further, as shown in FIG. 1, the substrate portion 11 has both the front and rear sides sandwiching the bottom portion of the crimping portion 18, in detail, between the bottom portions of the crimping portion 18 and the pressing portion 17, and between the crimping portion 18 and the insulation barrel 14. A pair of deformation absorbing portions 23 are provided between the two bottom portions for absorbing expansion deformation of the bottom portion accompanying the pressure bonding operation of the pressure bonding portion 18. The deformation absorbing portion 23 is configured as a slit hole extending in the width direction from the substrate portion 11 to the both side plate portions 19 and penetrating in the plate thickness direction.

一方、圧接部１７は、本体部１２と圧着部１８との間における側板部１９を高さ方向に延長することで周囲よりも一段高くされた一対の対向壁２４を有している。そして、両対向壁２４には、図３に示すように、外側からの叩き出しによって内側へエッジ状に突出する一対の圧接刃２５が形成されている。両圧接刃２５は、図３に示すように、電線９０を受け入れるべく上方へ向けてラッパ状の拡開して第１被覆部９３の絶縁被覆９２を切開する切開部２６と、切開部２６の下端から垂下され、かつ切開部２６によって切開された絶縁被覆９２の内側における芯線９１に導通接続される接触部２７とによって構成されている。両接触部２７間の間隔は、第１被覆部９３の芯線９１の直径より小さく設定されている。接触部２７が第１被腹部の芯線９１にほぼ線接触状態で接触することにより、芯線９１の表面に形成された酸化被膜が効果的に破壊され、もって接触抵抗が低下して相手側端子金具との良好な接続状態が実現されるようになっている。 On the other hand, the press-contact part 17 has a pair of opposing walls 24 that are one step higher than the surroundings by extending the side plate part 19 between the main body part 12 and the crimping part 18 in the height direction. Then, as shown in FIG. 3, a pair of press contact blades 25 are formed on both opposing walls 24 so as to protrude inward in an edge shape when knocked out from the outside. As shown in FIG. 3, the two press contact blades 25 are formed as a trumpet-shaped expanding upward so as to receive the electric wire 90, and incising the insulating coating 92 of the first covering portion 93. The contact portion 27 is suspended from the lower end and is electrically connected to the core wire 91 inside the insulating coating 92 cut by the cut portion 26. The distance between the contact portions 27 is set smaller than the diameter of the core wire 91 of the first covering portion 93. When the contact portion 27 comes into contact with the core wire 91 of the first stomach portion in a substantially line contact state, the oxide film formed on the surface of the core wire 91 is effectively destroyed, thereby reducing the contact resistance and causing the mating terminal fitting And a good connection state is realized.

次に、本実施形態の作用を説明する。
まず、電線９０の端末寄りの中間部を皮剥ぎして絶縁被覆９２を除去し、もって電線９０の端末側から順に、第１被覆部９３、芯線露出部９４及び第２被覆部９５を形成する。続いて、基板部１１の支持面１５上に上方から電線９０を載せる。すると、第１被覆部９３が両圧接刃２５の切開部２６に導入されてその絶縁被覆９２が切開され、さらに第１被覆部９３の芯線９１が両圧切刃の接触部２７にほぼ線状に接触することにより、端子金具１０と電線９０とが電気的に接続される（図３を参照）。 Next, the operation of this embodiment will be described.
First, the intermediate portion near the end of the electric wire 90 is peeled off to remove the insulating coating 92, so that the first covering portion 93, the core wire exposed portion 94, and the second covering portion 95 are formed in order from the end side of the electric wire 90. . Subsequently, the electric wire 90 is placed on the support surface 15 of the substrate unit 11 from above. Then, the first covering portion 93 is introduced into the incision portion 26 of the two press contact blades 25, the insulating covering 92 is incised, and the core wire 91 of the first covering portion 93 is substantially linear with the contact portion 27 of the both press cutting blades. By contact, the terminal fitting 10 and the electric wire 90 are electrically connected (see FIG. 3).

次いで、オープン状態にあるワイヤバレル１３及びインシュレーションバレル１４を、図示しないアンビル（下金型）とクリンパ（上金型）とからなる所定の金型内にセットし、アンビルとクリンパとを互いに接近させることにより、芯線露出部９４にワイヤバレル１３の両圧着片２１をかしめ付けるとともに、第２被覆部９５にインシュレーションバレル１４の両バレル片１６をかしめ付ける。すると、芯線露出部９４が圧着部１８によって適正な圧縮力をもって圧着され、芯線露出部９４がワイヤバレル１３に確実に抜け止め保持される。圧着部１８の圧着動作に伴って、仮に、圧着部１８の底部が長さ方向に伸長しても、その変形量は変形吸収部２３のスリット孔を狭めることで吸収されるから、端子金具１０の全長までもが伸長することはない。また同様に、第２被覆部９５がインシュレーションバレル１４によって適正な圧縮力をもって圧着されることにより、第２被覆部９５がインシュレーションバレル１４に確実に抜け止め保持される。 Next, the wire barrel 13 and the insulation barrel 14 in an open state are set in a predetermined mold including an anvil (lower mold) and a crimper (upper mold) (not shown), and the anvil and the crimper are brought close to each other. By doing so, the crimping pieces 21 of the wire barrel 13 are caulked to the core wire exposed portion 94, and the barrel pieces 16 of the insulation barrel 14 are caulked to the second covering portion 95. Then, the core wire exposed portion 94 is crimped with an appropriate compressive force by the crimp portion 18, and the core wire exposed portion 94 is securely held by the wire barrel 13. Even if the bottom of the crimping portion 18 extends in the length direction along with the crimping operation of the crimping portion 18, the deformation amount is absorbed by narrowing the slit hole of the deformation absorbing portion 23. Even the full length of the do not extend. Similarly, the second covering part 95 is securely held by the insulation barrel 14 by being pressed by the insulation barrel 14 with an appropriate compressive force.

以上説明したように本実施形態によれば、刃状の圧接部１７が電線９０に圧接状態で接続されることにより、ワイヤバレル１３と芯線９１とが電気的に確実に接続される。この場合、芯線９１の表面に形成された絶縁性の酸化被膜が刃状の圧接部１７によって破壊されるため、接触抵抗が低くなり、接続信頼性が高められる。また、オープンバレル状の圧着部１８が適度な圧着力をもって芯線９１にかしめ付けられることにより、芯線９１が圧着部１８に確実に保持される。したがって、本実施形態によれば、電線９０の芯線９１に対するワイヤバレル１３の固着力が適正値に設定されて、電線９０とワイヤバレル１３との機械的及び電気的な接続状態の安定性が確保される。 As described above, according to the present embodiment, the blade-like pressure contact portion 17 is connected to the electric wire 90 in a pressure contact state, whereby the wire barrel 13 and the core wire 91 are electrically connected reliably. In this case, since the insulating oxide film formed on the surface of the core 91 is broken by the blade-like pressure contact portion 17, the contact resistance is lowered and the connection reliability is improved. Further, the crimping portion 18 having an open barrel shape is caulked to the core wire 91 with an appropriate crimping force, so that the core wire 91 is securely held by the crimping portion 18. Therefore, according to this embodiment, the fixing force of the wire barrel 13 to the core 91 of the electric wire 90 is set to an appropriate value, and the stability of the mechanical and electrical connection state between the electric wire 90 and the wire barrel 13 is ensured. Is done.

また、圧接部１７が電線９０の絶縁被覆９２を切開する一対の圧接刃２５を有しているため、圧接刃２５と芯線９１との接続部分の周りが絶縁被覆９２によって保護状態に置かれる。
さらに、電線９０の端末が第１被覆部９３の絶縁被覆９２によって覆われているため、圧着部１８の圧着動作に伴って電線９０の端末における芯線９１が跳ね上がるのが抑えられ、芯線９１と周辺部品（例えば、端子金具１０の本体部１２の後端に係止されるリテーナなど）との干渉が回避される。 In addition, since the press contact portion 17 has a pair of press contact blades 25 for incising the insulation coating 92 of the electric wire 90, the periphery of the connection portion between the press contact blade 25 and the core 91 is placed in a protected state by the insulation coating 92.
Furthermore, since the end of the electric wire 90 is covered with the insulating coating 92 of the first covering portion 93, the core wire 91 at the end of the electric wire 90 is suppressed from jumping up with the crimping operation of the crimping portion 18, and Interference with parts (for example, a retainer locked to the rear end of the main body 12 of the terminal fitting 10) is avoided.

しかも、基板部１１には圧着部１８の底部を挟んだ両側に一対の変形吸収部２３が設けられているため、圧着部１８の圧着動作に伴って底部が伸長変形したときに、変形吸収部２３によってその変形が吸収され、端子金具１０の全長が伸長するのが抑えられる。その結果、端子金具１０がコネクタハウジングのキャビティ内に挿入されたときに、端子金具１０の後端部がキャビティの外側へ飛び出す事態が回避される。 Moreover, since the substrate portion 11 is provided with a pair of deformation absorbing portions 23 on both sides of the bottom portion of the crimping portion 18, when the bottom portion is extended and deformed by the crimping operation of the crimping portion 18, the deformation absorbing portion. The deformation is absorbed by 23 and the extension of the entire length of the terminal fitting 10 is suppressed. As a result, when the terminal fitting 10 is inserted into the cavity of the connector housing, a situation in which the rear end portion of the terminal fitting 10 jumps out of the cavity is avoided.

＜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形態も本発明の技術的範囲に含まれる。
（１）変形吸収部は圧着部の底部を挟んで３つ以上設けられていてもよい。また場合によっては変形吸収部を省略してもよい。
（２）インシュレーションバレルを省略してもよい。
（３）ワイヤバレルの圧着部は芯線を包囲する筒状のクローズドバレル型であってもよい。
（４）電線は銅又は銅合金からなる銅素線を撚り合せた芯線を有する銅電線であってもよい。
（５）本発明は、雄タブを有する雄型端子金具やスタッドボルトを挿通可能な接続孔を有するＬＡ端子に適用可能である。 <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) Three or more deformation absorbing parts may be provided across the bottom of the crimping part. Moreover, you may abbreviate | omit a deformation | transformation absorption part depending on the case.
(2) The insulation barrel may be omitted.
(3) The crimping portion of the wire barrel may be a cylindrical closed barrel type surrounding the core wire.
(4) The electric wire may be a copper electric wire having a core wire obtained by twisting copper wires made of copper or a copper alloy.
(5) The present invention is applicable to a male terminal fitting having a male tab and an LA terminal having a connection hole through which a stud bolt can be inserted.

本発明の実施形態１に係る端子金具の側面図である。It is a side view of the terminal metal fitting concerning Embodiment 1 of the present invention. 端子金具の平面図である。It is a top view of a terminal metal fitting. 図２のＡ−Ａ断面図である。It is AA sectional drawing of FIG.

Explanation of symbols

１０…端子金具
１１…基板部
１３…ワイヤバレル
１４…インシュレーションバレル
１７…圧接部
１８…圧着部
２５…圧接刃
９０…電線
９１…芯線
９２…絶縁被覆 DESCRIPTION OF SYMBOLS 10 ... Terminal metal fitting 11 ... Board | substrate part 13 ... Wire barrel 14 ... Insulation barrel 17 ... Press-contact part 18 ... Crimp part 25 ... Press-contact blade 90 ... Electric wire 91 ... Core wire 92 ... Insulation coating

Claims

A terminal fitting with a wire barrel connected to the core of the electric wire,
The wire barrel is located near the end of the electric wire, is connected to the core wire in a press-contact state, and is positioned farther from the end of the electric wire than the press-contact portion. A terminal fitting having a barrel-like crimping portion to be caulked.

The terminal fitting according to claim 1, wherein the press contact portion has a pair of press contact blades that are cut out from the insulation coating of the electric wire and connected to the core wire inside.

The terminal fitting according to claim 2, wherein a terminal of the electric wire is covered with the insulating coating.

While constituting the bottom of the wire barrel, a substrate portion for supporting the electric wire is provided extending in the axial direction,
The terminal fitting according to any one of claims 1 to 3, wherein the substrate portion is provided with a deformation absorbing portion capable of absorbing extension deformation of the bottom portion on both sides sandwiching the bottom portion of the crimping portion.