JP5151936B2 - Terminal fitting and manufacturing method thereof - Google Patents

Terminal fitting and manufacturing method thereof Download PDF

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Publication number
JP5151936B2
JP5151936B2 JP2008304479A JP2008304479A JP5151936B2 JP 5151936 B2 JP5151936 B2 JP 5151936B2 JP 2008304479 A JP2008304479 A JP 2008304479A JP 2008304479 A JP2008304479 A JP 2008304479A JP 5151936 B2 JP5151936 B2 JP 5151936B2
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barrel
core wire
concave
convex
pieces
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JP2010129448A (en
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真治 飯星
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Priority to JP2008304479A priority Critical patent/JP5151936B2/en
Priority claimed from PCT/JP2009/061626 external-priority patent/WO2010024033A1/en
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本発明は、端子金具及びその製造方法に関する。 The present invention relates to a terminal fitting and a manufacturing method thereof .

特許文献1には、従来の端子金具が開示されている。この端子金具は、電線が載せられる基板部と、基板部の両側から突出して電線の端末にて露出された芯線に外側から圧着される一対のバレル片とを備え、両バレル片が芯線にかしめ付けられることにより、電線との電気的な接続がとられるようになっている。
特開2008−262842公報
Patent Document 1 discloses a conventional terminal fitting. The terminal fitting includes a board portion on which the electric wire is placed, and a pair of barrel pieces that protrude from both sides of the board portion and are crimped from the outside to the core wire that is exposed at the end of the electric wire, and both barrel pieces are caulked to the core wire. By being attached, electrical connection with the electric wire can be taken.
JP 2008-262842 A

ところで、例えば、バレル片の内面に板厚を減じる凹部を設け、この凹部の内面に芯線を沿わせるようにすれば、両バレル片の芯線への保持力が高められ、ひいては端子金具と電線との接続信頼性の向上を図ることができる。しかるにこの場合に、両バレル片の圧着力が高く設定されていると、かしめ動作に伴ってバレル片が展延されるため、凹部と対応する位置に存するバレル片の板厚が大幅に減少して、バレル片の強度が不足するという問題がある。   By the way, for example, if a concave portion for reducing the plate thickness is provided on the inner surface of the barrel piece and the core wire is arranged along the inner surface of the concave portion, the holding force to the core wire of both barrel pieces can be increased, and consequently the terminal metal fitting and the electric wire Connection reliability can be improved. However, in this case, if the pressure-bonding force of both barrel pieces is set high, the barrel pieces are expanded along with the caulking operation, so that the thickness of the barrel pieces at the positions corresponding to the recesses is greatly reduced. There is a problem that the strength of the barrel piece is insufficient.

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、バレル片の強度を確保することを目的とする。   The present invention has been completed based on the above circumstances, and an object thereof is to ensure the strength of the barrel piece.

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、電線が載せられる基板部と、前記基板部の両側から突出する一対のバレル片とを備え、前記両バレル片が、前記電線の端末にて露出された芯線に外側から圧着される端子金具であって、前記バレル片の外面には、内面側に凹む凹部が設けられ、前記バレル片の内面には、前記凹部と背中合わせの位置に、前記芯線側に突出する凸部が設けられ、前記凹部が、前記芯線の配線方向と交差する向きに延び且つ前記両バレル片のうちの一方のバレル片において前記芯線の配線方向に間隔をあけて複数配置される第1凹部と、前記芯線の配線方向と交差する向きに延び且つ前記両バレル片のうちの他方のバレル片において前記芯線の配線方向に間隔をあけて複数配置される第2凹部とからなり、前記凸部が、前記第1凹部及び前記第2凹部のそれぞれと背合わせの位置に配置される第1凸部及び第2凸部からなり、前記第1凹部及び前記第2凹部が、前記芯線の配線方向に関して交互に千鳥状に配されている構成としたところに特徴を有する。 As means for achieving the above object, the invention of claim 1 comprises a substrate part on which an electric wire is placed, and a pair of barrel pieces protruding from both sides of the substrate part, wherein both the barrel pieces are the electric wire. A terminal fitting that is crimped from the outside to the core wire exposed at the end of the barrel piece, the outer surface of the barrel piece is provided with a recessed portion recessed on the inner surface side, and the inner surface of the barrel piece is back-to-back with the recessed portion. A convex portion protruding toward the core wire is provided at a position, and the concave portion extends in a direction crossing the wiring direction of the core wire and is spaced in the wiring direction of the core wire in one of the barrel pieces. A plurality of first recesses arranged with a gap extending in a direction intersecting with the wiring direction of the core wire, and a plurality of the first concave portions arranged in the other of the barrel pieces with an interval in the wiring direction of the core wire. From the second recess The convex portion is composed of a first convex portion and a second convex portion that are arranged back to back with each of the first concave portion and the second concave portion, and the first concave portion and the second concave portion are The present invention is characterized in that the arrangement is alternately arranged in a staggered manner with respect to the wiring direction of the core wires .

請求項2の発明は、請求項1に記載のものにおいて、前記凸部及び前記凹部は、前記バレル片のみに設けられているところに特徴を有する。   The invention of claim 2 is characterized in that, in the invention of claim 1, the convex part and the concave part are provided only in the barrel piece.

請求項3の発明は、請求項1又は2に記載のものにおいて、前記凸部及び前記凹部は、前記芯線の配線方向と交差する向きに延びる線条の形状とさ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 1 or 2, the protrusion and the recess are in the form of a line extending in a direction intersecting the wiring direction of the core wire. .

請求項4の発明は請求項1ないし3のいずれか1項に記載の端子金具の製造方法であって、前記基板部に、前記電線の端末にて露出された芯線を載せ、その状態で前記芯線に外側から前記両バレル片をかしめ付け、そのかしめ付け動作と同時に、又はそのかしめ付け動作の後に、前記バレル片の外面を叩いて、前記バレル片の外面に、内面側に凹む前記凹部を形成するとともに、前記バレル片の内面における前記凹部と背中合わせの位置に、前記芯線側に突出する前記凸部を形成するところに特徴を有する。 Invention of Claim 4 is a manufacturing method of the terminal metal fitting of any one of Claim 1 thru | or 3, Comprising: The core wire exposed in the terminal of the said electric wire is mounted in the said board | substrate part, and the said state in the state caulking the both barrel pieces from the outside to the core wire, at the same time as the caulking operation, or after the caulking operation, banging outer surface of said barrel piece, the outer surface of the barrel piece, the recess recessed in the inner surface side While forming, the said convex part which protrudes in the said core line side is formed in the position of the said recessed part and back-to-back position in the inner surface of the said barrel piece.

<請求項1の発明>
バレル片の内面には芯線側に突出する凸部が設けられているから、バレル片の芯線への保持力が高められ、端子金具と電線との接続信頼性の向上を図ることができる。また、バレル片の外面に凹部が設けられ、バレル片の内面における凹部と背中合わせの位置に凸部が設けられているから、バレル片にその板厚を減じる凹部のみが設けられる場合と比較して、バレル片の強度が確保される。
<Invention of Claim 1>
Since the convex part which protrudes in the core wire side is provided in the inner surface of the barrel piece, the retention strength to the core wire of a barrel piece can be raised, and the improvement of the connection reliability of a terminal metal fitting and an electric wire can be aimed at. In addition, a concave portion is provided on the outer surface of the barrel piece, and a convex portion is provided at a position that is back to back with the concave portion on the inner surface of the barrel piece, so that only a concave portion that reduces the plate thickness is provided on the barrel piece. The strength of the barrel piece is ensured.

<請求項2の発明>
凸部及び凹部がバレル片のみに設けられ、つまり芯線への圧着力の高い部位に効率よく設けられているから、必要以上に構成の複雑化を伴うことがない。
<Invention of Claim 2>
Since the convex portion and the concave portion are provided only in the barrel piece, that is, efficiently provided in a portion having a high crimping force to the core wire, the configuration is not complicated more than necessary.

<請求項3の発明>
凸部及び凹部が芯線の配線方向と交差する向きに延びる線条の形状とされているから、芯線への保持力がよりいっそう高められる。
<Invention of Claim 3>
Since the convex portion and the concave portion have a shape of a line extending in a direction intersecting with the wiring direction of the core wire, the holding force to the core wire is further enhanced.

<請求項4の発明>
凸部及び凹部がかしめ付け動作と同時にまたはかしめ付け動作の後に形成されるから、圧着状態にあるバレル片がスプリングバックによって外側に開き変形するのが防止される。
<Invention of Claim 4>
Since the convex portion and the concave portion are formed at the same time as the caulking operation or after the caulking operation, the barrel piece in the crimped state is prevented from being opened and deformed by the spring back.

参考例1>
参考例1を図1及び図2によって説明する。参考例1に係る端子金具10は、電線90の端末に接続されるものであって、図示しないコネクタハウジングに収容され、その状態で図示しない相手コネクタと嵌合されることにより、図示しない相手端子と導通接続されるようになっている。この端子金具10は、銅又は銅合金からなる導電性金属板を所定形状に打ち抜いたあと曲げ加工等して一体に成形され、前後方向の全長に亘って延びる帯板状の基板部11を備えている。
< Reference Example 1>
Reference Example 1 will be described with reference to FIGS. 1 and 2. The terminal fitting 10 according to the reference example 1 is connected to the terminal of the electric wire 90, and is accommodated in a connector housing (not shown) and fitted with a mating connector (not shown) in that state, thereby a mating terminal (not shown). Is connected to the continuity. The terminal fitting 10 includes a strip-like substrate portion 11 which is integrally formed by punching a conductive metal plate made of copper or a copper alloy into a predetermined shape and then bending, and extends over the entire length in the front-rear direction. ing.

基板部11の前端部には、相手端子を受容してこの相手端子と電気的に接続される接続部12が角筒状に折り曲げて設けられている。また、基板部11の後端部の両側縁(延出方向と直交する幅方向の両端縁)には、電線90の端末における被覆91に外側から圧着されるオープンバレル状の一対の保持片13が外側に突出して設けられている。両保持片13は、圧着後、電線90の被覆91の外周面に沿って回曲され、図2に示すように、その先端同士を基板部11の幅方向略中央部にて突き合わせて配されている。さらに、基板部11の両側縁には、前後方向に関して接続部12と両保持片13との間に、電線90の端末にて露出された芯線92に外側から圧着されるオープンバレル状の一対のバレル片14が外側に突出して設けられている。両バレル片14は、電線90の芯線92の幅方向略中央部に深く食い込むように圧着され、圧着後は湾曲状をなしてその先端同士を基板部11の幅方向略中央部に突き合わせて配されている。   A connecting portion 12 that receives the mating terminal and is electrically connected to the mating terminal is provided at the front end of the substrate portion 11 by bending it into a rectangular tube shape. Further, a pair of open barrel-shaped holding pieces 13 that are crimped from the outside to the covering 91 at the end of the electric wire 90 on both side edges (both end edges in the width direction orthogonal to the extending direction) of the rear end portion of the substrate portion 11. Projecting outward. The two holding pieces 13 are bent along the outer peripheral surface of the covering 91 of the electric wire 90 after being crimped, and are arranged with their tips abutted at the substantially central portion in the width direction of the substrate portion 11 as shown in FIG. ing. Furthermore, a pair of open barrels that are crimped from the outside to the core wire 92 exposed at the end of the electric wire 90 between the connection portion 12 and both holding pieces 13 in the front-rear direction on both side edges of the substrate portion 11. A barrel piece 14 is provided protruding outward. Both barrel pieces 14 are crimped so as to penetrate deeply into the substantially central portion in the width direction of the core wire 92 of the electric wire 90, and after crimping, the barrel pieces 14 are curved and arranged with their tips butted against the substantially central portion in the width direction of the substrate portion 11. Has been.

電線90は、基板部11の長さ方向(前後方向)に配策され、アルミニウム又はアルミニウム合金からなる素線を撚り合わせた芯線92と、芯線92の周りを覆う絶縁樹脂製の被覆91とによって構成されている。   The electric wire 90 is arranged in the length direction (front-rear direction) of the substrate portion 11, and includes a core wire 92 in which strands made of aluminum or an aluminum alloy are twisted together, and a covering 91 made of an insulating resin covering the periphery of the core wire 92. It is configured.

さて、上記の両バレル片14の外面には、図1に示すように、前後方向中間部において前後方向に間隔をあけて配され、内面側に凹む複数の凹部15が設けられている。各凹部15は、幅方向に延びる線条であって断面V字状をなし、図2に示すように、互いに平行に、かつ両バレル片14に跨って一直線状に、配されている。また、両バレル片14の内面には、凹部15と背中合わせの位置に、芯線92側に突出する複数の凸部16が設けられている。各凸部16は、幅方向に延びる線条であって断面V字状をなし、互いに平行に、かつ両バレル片14に跨って一直線状に配され、端的には各凹部15と適合する形状をなしている。このため、バレル片14は、各凸部16及び各凹部15と対応する部位を含めて全体に亘ってほぼ同じ板厚とされている。なお、かかる凸部16及び凹部15は、両バレル片14のみに設けられ、接続部12、基板部11、両保持片13には設けられていない。   As shown in FIG. 1, a plurality of concave portions 15 are provided on the outer surfaces of the barrel pieces 14. Each concave portion 15 is a line extending in the width direction and has a V-shaped cross section, and is arranged in parallel with each other and in a straight line across both barrel pieces 14 as shown in FIG. In addition, a plurality of convex portions 16 projecting toward the core wire 92 are provided on the inner surfaces of both barrel pieces 14 at a position back to back with the concave portion 15. Each convex part 16 is a line extending in the width direction, has a V-shaped cross section, is arranged in parallel with each other and straddling both barrel pieces 14, and ends with a shape that fits each concave part 15. I am doing. For this reason, the barrel piece 14 has substantially the same thickness throughout the entire portion including the portions corresponding to the convex portions 16 and the concave portions 15. The convex portions 16 and the concave portions 15 are provided only on both barrel pieces 14, and are not provided on the connection portion 12, the substrate portion 11, and both holding pieces 13.

次に、参考例1に係る端子金具10の製造方法及びその作用効果について説明する。
電線90の端末における被覆91を皮剥ぎして芯線92を露出させた後、電線90を基板部11の上面に載せる。続いて、図示しないアンビルとクリンパ等の治具を用いて両バレル片14及び両保持片13をかしめ付ける。すると、両バレル片14が内側に傾倒してその先端部が芯線92の幅方向中央部に外側(上方)から食い込み、これによって端子金具10と電線90とが電気的に接続される。また、両バレル片14と対応する治具の内面に形成された凸条により、治具の移動に伴って両バレル片14の外面が押圧され、両バレル片14の外面に凹部15が形成されるとともに、両バレル片14の内面に凸部16が形成される。そして、この凸部16が芯線92の表面にエッジ状に食い込むことにより、芯線92が強固に圧着される。この場合、仮に、芯線92の表面に酸化アルミニウムからなる酸化皮膜が形成されていても、凸部16の成形と同時に、凸部16が酸化皮膜を機械的に破壊するため、両バレル片14と芯線92との良好な接続信頼性が確保される。
Next, the manufacturing method of the terminal metal fitting 10 which concerns on the reference example 1 , and its effect are demonstrated.
After stripping the covering 91 at the end of the electric wire 90 to expose the core wire 92, the electric wire 90 is placed on the upper surface of the substrate portion 11. Subsequently, the barrel pieces 14 and the holding pieces 13 are caulked by using an unillustrated jig such as an anvil and a crimper. Then, both the barrel pieces 14 are tilted inwardly, and the tip end part bites into the center part in the width direction of the core wire 92 from the outside (upper side), whereby the terminal fitting 10 and the electric wire 90 are electrically connected. Further, the outer surfaces of both barrel pieces 14 are pressed with the movement of the jig by the protrusions formed on the inner surfaces of the jigs corresponding to both barrel pieces 14, and concave portions 15 are formed on the outer surfaces of both barrel pieces 14. In addition, convex portions 16 are formed on the inner surfaces of both barrel pieces 14. And this convex part 16 bites into the surface of the core wire 92 in edge shape, and the core wire 92 is crimped | bonded firmly. In this case, even if an oxide film made of aluminum oxide is formed on the surface of the core wire 92, since the convex part 16 mechanically destroys the oxide film simultaneously with the formation of the convex part 16, Good connection reliability with the core wire 92 is ensured.

ところで、上記の場合、かしめ動作によって両バレル片14に板厚方向の力が加わるため、両バレル片14が展延されて、凹部15と対応する部位の強度が低下する懸念がある。しかるに参考例1によれば、両バレル片14には凹部15と凸部16とが互いに背中合わせの位置に設けられているため、両バレル片14にその板厚を減じる凹部15のみが設けられる場合と比べ、両バレル片14の板厚が大きく減少することがなく、また凸部16によって両バレル片14の伸び量そのものが小さく抑えられる。その結果、両バレル片14の強度が適正に確保される。 By the way, in the above case, since force in the plate thickness direction is applied to both barrel pieces 14 by the caulking operation, both barrel pieces 14 are spread, and there is a concern that the strength of the portion corresponding to the concave portion 15 is lowered. However, according to the reference example 1 , since the concave portions 15 and the convex portions 16 are provided in the back-to-back positions in both the barrel pieces 14, only the concave portions 15 that reduce the thickness of the barrel pieces 14 are provided. Compared to the above, the thickness of both barrel pieces 14 is not greatly reduced, and the protrusion 16 can keep the amount of elongation of both barrel pieces 14 small. As a result, the strength of both barrel pieces 14 is ensured appropriately.

また、凸部16及び凹部15が両バレル片14のみに設けられ、つまり芯線92への圧着力の高い部位に効率よく設けられているから、端子金具10の構成が必要以上に複雑になるのが回避される。   Moreover, since the convex part 16 and the recessed part 15 are provided only in both the barrel pieces 14, that is, efficiently provided in the site | part with the high crimping force to the core wire 92, the structure of the terminal metal fitting 10 becomes more complicated than necessary. Is avoided.

さらに、凸部16及び凹部15が芯線92の配線方向と交差する向きに延びる線条の形状とされているから、芯線92への保持力がよりいっそう高められる。   Furthermore, since the convex part 16 and the recessed part 15 are in the shape of a line extending in a direction intersecting the wiring direction of the core wire 92, the holding force to the core wire 92 is further enhanced.

さらにまた、凸部16及び凹部15がかしめ付け動作と同時に形成されるから、芯線92に圧着された両バレル片14がスプリングバックによって外側に開き変形するのが効果的に防止される。   Furthermore, since the convex portion 16 and the concave portion 15 are formed at the same time as the caulking operation, it is effectively prevented that both barrel pieces 14 crimped to the core wire 92 are opened and deformed outward by the spring back.

<実施形態
図3は実施形態に係る端子金具10を示す。これは、凸部16及び凹部15の配置が参考例1とは異なっている。すなわち、凹部15は、両バレル片14の外面のうちの一方に、互いに平行に配される第1凹部15Aを有し、他方に、互いに平行に配される第2凹部15Bを有して構成されている。第1凹部15Aと第2凹部15Bとは、いずれも幅方向に直線状に延びる形状とされ、かつ前後方向に関して互い違いとなるよう互いに千鳥状に配されている。図示しない凸部16も、第1凹部15A及び第2凹部15Bと背中合わせの位置に、それぞれ第1凸部及び第2凸部を有している。その他は、参考例1と同様である。
<Embodiment 1 >
Figure 3 shows the terminal fitting 10 according to the first embodiment. This is different from the reference example 1 in the arrangement of the convex portions 16 and the concave portions 15. That is, the concave portion 15 has a first concave portion 15A arranged parallel to each other on one of the outer surfaces of the barrel pieces 14, and has a second concave portion 15B arranged parallel to each other on the other side. Has been. The first recesses 15A and the second recesses 15B both have a shape extending linearly in the width direction, and are arranged in a staggered manner so as to be staggered in the front-rear direction. The not-shown convex portion 16 also has a first convex portion and a second convex portion at positions back to back with the first concave portion 15A and the second concave portion 15B, respectively. Others are the same as in Reference Example 1.

<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)両バレル片をかしめ付けた後、両バレル片の外面を叩くことにより、両バレル片の内面及び外面にそれぞれ凸部及び凹部を形成してもよい。
(2)凸部及び凹部は、任意形状であって、例えば、断面角U字状に形成されてもよい。
(3)凸部及び凹部の個数は、3つ以上であってもよい。
(4)端子金具は、前方へ突出する雄タブを有する雄型端子金具であってもよい。
(5)電線は、銅又は銅合金からなる素線を撚り合わせた芯線を有する銅電線であってもよい。
<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) After caulking both barrel pieces, a convex portion and a concave portion may be formed on the inner surface and the outer surface of both barrel pieces by hitting the outer surfaces of both barrel pieces, respectively.
(2) A convex part and a recessed part are arbitrary shapes, Comprising: For example, a cross-sectional angle U-shape may be formed.
(3) The number of convex portions and concave portions may be three or more.
(4) The terminal fitting may be a male terminal fitting having a male tab protruding forward.
(5) The electric wire may be a copper electric wire having a core wire obtained by twisting strands made of copper or a copper alloy.

参考例1に係る端子金具の要部破断側面図である。It is a principal part fracture side view of the terminal metal fitting concerning a reference example 1. 端子金具の要部平面図である。It is a principal part top view of a terminal metal fitting. 実施形態に係る端子金具の要部平面図である。3 is a plan view of a main part of the terminal fitting according to Embodiment 1. FIG.

10…端子金具
11…基板部
14…バレル片
15…凹部
16…凸部
90…電線
92…芯線
DESCRIPTION OF SYMBOLS 10 ... Terminal metal fitting 11 ... Board | substrate part 14 ... Barrel piece 15 ... Concave part 16 ... Convex part 90 ... Electric wire 92 ... Core wire

Claims (4)

電線が載せられる基板部と、前記基板部の両側から突出する一対のバレル片とを備え、前記両バレル片が、前記電線の端末にて露出された芯線に外側から圧着される端子金具であって、
前記バレル片の外面には、内面側に凹む凹部が設けられ、
前記バレル片の内面には、前記凹部と背中合わせの位置に、前記芯線側に突出する凸部が設けられ
前記凹部が、前記芯線の配線方向と交差する向きに延び且つ前記両バレル片のうちの一方のバレル片において前記芯線の配線方向に間隔をあけて複数配置される第1凹部と、前記芯線の配線方向と交差する向きに延び且つ前記両バレル片のうちの他方のバレル片において前記芯線の配線方向に間隔をあけて複数配置される第2凹部とからなり、前記凸部が、前記第1凹部及び前記第2凹部のそれぞれと背合わせの位置に配置される第1凸部及び第2凸部からなり、
前記第1凹部及び前記第2凹部が、前記芯線の配線方向に関して交互に千鳥状に配されていることを特徴とする端子金具。
It is a terminal fitting that includes a board portion on which an electric wire is placed and a pair of barrel pieces protruding from both sides of the board portion, and the two barrel pieces are crimped from the outside to the core wire exposed at the end of the electric wire. And
The outer surface of the barrel piece is provided with a recess recessed on the inner surface side,
On the inner surface of the barrel piece, a convex portion protruding toward the core wire side is provided at a position back to back with the concave portion ,
A plurality of the recesses extending in a direction intersecting with the wiring direction of the core wire, and a plurality of first recesses arranged at intervals in the wiring direction of the core wire in one barrel piece of the both barrel pieces; A plurality of second recesses extending in a direction crossing the wiring direction and arranged at intervals in the wiring direction of the core wire in the other barrel piece of the two barrel pieces; It consists of a first convex part and a second convex part, which are arranged in a back-to-back position with each of the concave part and the second concave part,
The terminal fitting, wherein the first recesses and the second recesses are alternately arranged in a staggered manner in the wiring direction of the core wire .
前記凸部及び前記凹部は、前記バレル片のみに設けられている請求項1記載の端子金具。   The terminal fitting according to claim 1, wherein the convex portion and the concave portion are provided only on the barrel piece. 前記凸部及び前記凹部は、前記芯線の配線方向と交差する向きに延びる線条の形状とされている請求項1又は2記載の端子金具。   The terminal fitting according to claim 1, wherein the convex portion and the concave portion have a shape of a line extending in a direction intersecting with a wiring direction of the core wire. 請求項1ないし3のいずれか1項に記載の端子金具の製造方法であって、
前記基板部に、前記電線の端末にて露出された芯線を載せ、その状態で前記芯線に外側から前記両バレル片をかしめ付け、そのかしめ付け動作と同時に、又はそのかしめ付け動作の後に、前記バレル片の外面を叩いて、前記バレル片の外面に、内面側に凹む前記凹部を形成するとともに、前記バレル片の内面における前記凹部と背中合わせの位置に、前記芯線側に突出する前記凸部を形成することを特徴とする端子金具の製造方法。
It is a manufacturing method of the terminal metal fitting according to any one of claims 1 to 3 ,
On the board portion, the core wire exposed at the end of the electric wire is placed, and in this state, the barrel pieces are caulked from the outside, and simultaneously with the caulking operation or after the caulking operation, banging an outer surface of the barrel piece, the outer surface of the barrel piece, thereby forming the recess recessed in the inner surface side, the back-to-back position and the recess in the inner surface of said barrel piece, said protrusion protruding to the core wire side A method for manufacturing a terminal fitting, comprising: forming a terminal fitting.
JP2008304479A 2008-11-28 2008-11-28 Terminal fitting and manufacturing method thereof Expired - Fee Related JP5151936B2 (en)

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