JP2011090804A - Electric wire with terminal fitting and method of manufacturing the same - Google Patents

Electric wire with terminal fitting and method of manufacturing the same Download PDF

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JP2011090804A
JP2011090804A JP2009241347A JP2009241347A JP2011090804A JP 2011090804 A JP2011090804 A JP 2011090804A JP 2009241347 A JP2009241347 A JP 2009241347A JP 2009241347 A JP2009241347 A JP 2009241347A JP 2011090804 A JP2011090804 A JP 2011090804A
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core wire
wire
electric wire
terminal fitting
crimped
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Masahiro Hagi
真博 萩
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire with a terminal fitting and its manufacturing method, having low electric resistance between a core wire and a terminal fitting of the electric wire, without breaking strands, and with low manufacturing cost. <P>SOLUTION: The method of manufacturing an electric wire 10 with a terminal fitting, equipped with an electric wire 11 with a core wire 12 made of a plurality of strands, and a terminal fitting 20 having a crimp part 27 crimped to the core wire 12 exposed from the wire 11, carries out a process for exposing the core wire 12 by peeling off an insulation coating 13 covering an outer peripheral surface of the core wire 12, a process for forming a welding area 26 with strands to be welded with each other so as to have nearly the same shape as the core wire 12 after crimping the crimp part 27 by pinching the exposed core wire 12 with a pair of jigs and giving ultrasonic vibration to the core wire 12 by the jigs, and a process for crimping the crimp part 27 by winding it around an area containing the welded area 26 of the core wire 12 from outside. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、端子金具付き電線および端子金具付き電線の製造方法に関する。   The present invention relates to an electric wire with a terminal fitting and a method for manufacturing an electric wire with a terminal fitting.

従来、電線から露出する芯線に、端子金具の圧着部を外側から巻き付けるように圧着してなる端子金具付き電線が知られている。   2. Description of the Related Art Conventionally, an electric wire with a terminal fitting is known in which a crimping portion of a terminal fitting is crimped around a core wire exposed from the electric wire from the outside.

上記の構成によると、芯線の外周面と、圧着部の内面とが接触することにより、芯線と圧着部とが電気的に接続されている。このとき、芯線を構成する素線の表面に、酸化皮膜等の比較的電気抵抗の高い皮膜が形成されている場合には、その皮膜により素線同士が電気的に充分に接続できないことが懸念される。すると、芯線と圧着部との電気的な接続に寄与するのは、芯線の径方向外側に位置して圧着部の内面と接触する素線のみとなってしまい、芯線の径方向内側に位置する素線が、圧着部との電気的な接続に寄与しなくなることが懸念される。この結果、電線と端子金具との間の電気抵抗が高くなることが懸念される。   According to said structure, the core wire and the crimping | compression-bonding part are electrically connected because the outer peripheral surface of a core wire and the inner surface of a crimping | compression-bonding part contact. At this time, when a film having a relatively high electrical resistance such as an oxide film is formed on the surface of the element wire constituting the core wire, there is a concern that the elements cannot be sufficiently electrically connected to each other by the film. Is done. Then, only the strands that are located on the radially outer side of the core wire and contact the inner surface of the crimped portion contribute to the electrical connection between the core wire and the crimped portion, and are located on the radially inner side of the core wire. There is a concern that the strands do not contribute to the electrical connection with the crimping portion. As a result, there is a concern that the electrical resistance between the electric wire and the terminal fitting is increased.

電気抵抗を低く抑えるためには、芯線に対して高い圧力で圧着部を圧着することが考えられる。この結果、素線の表面に形成された酸化皮膜が破れて新生面が露出し、素線同士が接触することにより、電気抵抗が小さくなることが期待された。   In order to keep the electrical resistance low, it is conceivable to crimp the crimping portion with a high pressure against the core wire. As a result, the oxide film formed on the surface of the strand was torn and the new surface was exposed, and it was expected that the electrical resistance would be reduced by contacting the strands.

しかしながら上記の手法によると、芯線の断面積が大きく減少するため、機械的強度（より具体的には圧着部が芯線を保持する強度）が低下する。特に、芯線がアルミ製の場合には、素線表面の酸化皮膜を破壊するために銅製の芯線と比較してより高圧縮で圧着しなければならないことが知られているが、背反として、素線切れの問題があり、素線切れを防止するためにはできる限り低圧縮で圧着することが望ましい。   However, according to the above method, the cross-sectional area of the core wire is greatly reduced, so that the mechanical strength (more specifically, the strength with which the crimping portion holds the core wire) is lowered. In particular, when the core wire is made of aluminum, it is known that in order to break the oxide film on the surface of the wire, it must be crimped with a higher compression than the copper core wire. There is a problem of wire breakage, and in order to prevent the wire breakage, it is desirable to perform pressure bonding with as low compression as possible.

このように、電線の圧着部の電気抵抗を低く抑えるためには圧着部を高圧縮で接続することが望ましく、一方、機械的強度の維持や素線切れ防止のためには低圧縮がよいという、相反する要求がされている。   Thus, in order to keep the electric resistance of the crimping part of the electric wire low, it is desirable to connect the crimping part with high compression, while on the other hand, low compression is good for maintaining mechanical strength and preventing strand breakage. There are conflicting requests.

一方、電線から露出する芯線と端子金具とを超音波溶接により電気的に接続してなる端子金具付き電線も知られている。例えば特許文献１では、電線の導体部分（芯線）を端子基板部の溶接部にセットし、振動ホーンを芯線に押圧して超音波振動を与えることにより、電線（芯線）と端子とを溶接する技術が開示されている。この超音波により、素線同士も溶接される。また、特許文献２では、電線と端子とを超音波溶接した後、溶接部をワイヤーバレルでかしめて、溶接部の素線のほぐれを防止する技術が開示されている。   On the other hand, an electric wire with a terminal fitting formed by electrically connecting a core wire exposed from an electric wire and a terminal fitting by ultrasonic welding is also known. For example, in Patent Document 1, a conductor portion (core wire) of an electric wire is set on a welding portion of a terminal substrate portion, and an ultrasonic vibration is applied by pressing a vibration horn against the core wire, thereby welding the electric wire (core wire) and a terminal. Technology is disclosed. The strands are also welded together by this ultrasonic wave. Patent Document 2 discloses a technique for preventing loosening of the wire of the welded portion by crimping the welded portion with a wire barrel after ultrasonically welding the electric wire and the terminal.

しかし、一般的に自動車用の端子としては、母材である銅・銅合金にスズ等の金属メッキを施している。このような端子の場合には、電線と端子とを超音波溶接できないという事情がある。従って、実際に電線と端子とを超音波溶接する場合には、金属メッキを施さない端子や、溶接部のみメッキを施さない端子、あるいは、溶接部分のメッキを切削した端子を用意しなければならず、コストアップにつながるという問題がある。   However, in general, as a terminal for an automobile, metal plating such as tin is applied to a copper / copper alloy which is a base material. In the case of such a terminal, there exists a situation that an electric wire and a terminal cannot be ultrasonically welded. Therefore, when ultrasonic welding is actually performed between the electric wire and the terminal, a terminal that is not subjected to metal plating, a terminal that is not subjected to plating only at the welded portion, or a terminal that is plated at the welded portion must be prepared. However, there is a problem that it leads to cost increase.

特開２００３−３３８３２８号公報JP 2003-338328 A 特開２００３−３３８３２７号公報JP 2003-338327 A

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（芯線）と端子金具との間の電気抵抗が低く、素線切れがなく、かつ製造コストが安い端子金具付き電線および端子金具付き電線の製造方法を提供することを目的とする。   The present invention has been completed based on the above-described circumstances, and has a low electric resistance between the electric wire (core wire) and the terminal fitting, no wire breakage, and low manufacturing cost. And it aims at providing the manufacturing method of an electric wire with a terminal metal fitting.

上記課題を解決するためになされた本発明は、複数の素線からなる芯線を有する電線と、前記電線から露出する前記芯線に圧着される圧着部を有する端子金具と、を備えた端子金具付き電線の製造方法であって、前記芯線の外周面を覆う絶縁被覆を剥離して前記芯線を露出させる工程と、露出した前記芯線を一対の治具で挟んで、前記治具により前記芯線に超音波振動を与えることにより、前記圧着部を圧着後の前記芯線の形状とほぼ同形状となるように前記素線が互いに溶接された溶接領域を形成する工程と、前記芯線のうち前記溶接領域を含む領域に外側から巻き付けるようにして前記圧着部を圧着する工程と、を実行するところに特徴を有する。   The present invention made in order to solve the above-mentioned problems is provided with a terminal fitting comprising: an electric wire having a core wire composed of a plurality of strands; and a terminal fitting having a crimping portion that is crimped to the core wire exposed from the electric wire. A method of manufacturing an electric wire, comprising: peeling an insulating coating covering an outer peripheral surface of the core wire to expose the core wire; sandwiching the exposed core wire with a pair of jigs; Forming a welded region in which the strands are welded to each other so as to be substantially the same shape as the shape of the core wire after crimping the crimped portion by applying sonic vibration; and And a step of crimping the crimping portion so as to be wound around the region including the outer side.

本発明によれば、一対の治具によって電線の露出した芯線に超音波振動を与えることにより、素線の表面に形成された酸化皮膜が破られ、素線同士が互いに溶接される。これにより、素線間の電気抵抗が低下する。しかもこの時、芯線は、一対の治具により端子の圧着部を圧着後の形状とほぼ同形状となるように溶接されるから、端子の圧着部を芯線に圧着するには、芯線に対して過度に高圧縮する必要はなく、圧着部と芯線とが電気的に接続する程度の低圧縮で圧着するだけでよい。よって、芯線の断面積が著しく減少することがない。このように本発明によれば、電線（芯線）と端子金具との間の電気抵抗が低く、素線切れがない端子金具付き電線を得ることができる。また、端子は金属メッキされた汎用の端子を使用することができるから、製造コストを抑えることができる。   According to the present invention, by applying ultrasonic vibration to the exposed core wire of the electric wire by the pair of jigs, the oxide film formed on the surface of the strand is broken and the strands are welded to each other. Thereby, the electrical resistance between strands falls. In addition, at this time, the core wire is welded by a pair of jigs so that the crimped portion of the terminal is almost the same as the shape after crimping. In order to crimp the crimped portion of the terminal to the core wire, There is no need for excessively high compression, and it is only necessary to perform pressure bonding at such a low compression that the crimping portion and the core wire are electrically connected. Therefore, the cross-sectional area of the core wire is not significantly reduced. As described above, according to the present invention, it is possible to obtain an electric wire with a terminal fitting that has a low electrical resistance between the electric wire (core wire) and the terminal fitting, and that does not have a break in the strands. Moreover, since a general-purpose terminal plated with metal can be used as the terminal, the manufacturing cost can be suppressed.

本発明の一実施形態の端子金具付き電線の斜視図The perspective view of the electric wire with a terminal metal fitting of one embodiment of the present invention 端子金具付き電線の分解斜視図Exploded perspective view of electric wire with terminal fittings 同じく電線の芯線をアンビルおよびホーンで挟む場合を示す断面図Sectional drawing which shows the case where the core wire of an electric wire is also pinched | interposed with an anvil and a horn 同じく芯線を溶接するとともに扁平なハート型に成形した場合の断面図Cross-sectional view of the same core wire welded and formed into a flat heart shape 同じく電線および端子金具を圧着する場合を示す断面図Sectional view showing the case of crimping electric wires and terminal fittings 同じく端子金具を電線に圧着した場合を示す断面図Sectional view showing the case where the terminal fitting is crimped to the wire

本発明の一実施形態を図１ないし図６を参照しつつ説明する。
本実施形態の端子金具付き電線１０は、例えば電気自動車において走行用の動力源を構成するバッテリ、インバータ、モータなどの装置（図示せず）の間に配索されるものである。 An embodiment of the present invention will be described with reference to FIGS.
The electric wire 10 with a terminal metal fitting of this embodiment is wired between apparatuses (not shown), such as a battery, an inverter, and a motor, which constitute a power source for traveling in an electric vehicle, for example.

図１は本実施形態の端子金具付き電線１０の斜視図であって、同図に示すように、電線１１は複数の素線１４からなる芯線１２と、芯線１２の外周を覆う合成樹脂製の絶縁被覆１３とを備える。芯線１２は、アルミニウム、アルミニウム合金、銅、銅合金等、必要に応じて任意の金属を用いることができる。本実施形態においては、アルミニウム又はアルミニウム合金が用いられている。   FIG. 1 is a perspective view of an electric wire 10 with terminal fittings according to the present embodiment. As shown in the figure, an electric wire 11 is made of a synthetic resin covering a core wire 12 composed of a plurality of strands 14 and an outer periphery of the core wire 12. And an insulating coating 13. The core wire 12 can use arbitrary metals as needed, such as aluminum, an aluminum alloy, copper, a copper alloy. In this embodiment, aluminum or an aluminum alloy is used.

一方、端子金具２０は一般的に使用されているものであり、金属板材を所定形状にプレス加工することにより形成されている。金属板材は銅又は銅合金等、必要に応じて任意の金属を用いることができる。本実施形態では銅又は銅合金が用いられる。また、金属板材にはスズ、ニッケル等任意の金属によるメッキが施されていてもよい。本実施形態ではスズメッキが施されている。   On the other hand, the terminal fitting 20 is generally used and is formed by pressing a metal plate material into a predetermined shape. As the metal plate material, any metal such as copper or copper alloy can be used as necessary. In this embodiment, copper or a copper alloy is used. Further, the metal plate material may be plated with an arbitrary metal such as tin or nickel. In this embodiment, tin plating is applied.

図２に示すように、この端子金具２０は、電線１１の端部側で露出された芯線１２が載置される底板２１と、この底板２１の左右両側から延出され立ち上げられた概ね矩形状をなす一対のワイヤーバレル２２と、電線１１の軸方向に沿って底板２１と並んで設けられ、外周面にネジ山が形成された取付ボルト（図示せず）を挿通するための取付孔２３が開口された略環状形で扁平な板状接続部２４とを備える。また、底板２１及びワイヤーバレル２２には、電線１１の軸方向（電線１１の延びる方向）と直交する方向に延びる複数の凹部２５が、電線１１の軸方向に間隔を空けて並んで形成されている。底板２１及びワイヤーバレル２２は、芯線１２に圧着される圧着部２７とされる。   As shown in FIG. 2, the terminal fitting 20 includes a bottom plate 21 on which the core wire 12 exposed on the end side of the electric wire 11 is placed, and a generally rectangular shape extending from both the left and right sides of the bottom plate 21 and rising up. A pair of wire barrels 22 having a shape, and mounting holes 23 for inserting mounting bolts (not shown) provided alongside the bottom plate 21 along the axial direction of the electric wires 11 and having threads on the outer peripheral surface. And a flat plate-like connecting portion 24 having a substantially annular shape. In addition, the bottom plate 21 and the wire barrel 22 are formed with a plurality of recesses 25 extending in a direction orthogonal to the axial direction of the electric wire 11 (the direction in which the electric wire 11 extends) side by side in the axial direction of the electric wire 11. Yes. The bottom plate 21 and the wire barrel 22 serve as a crimping portion 27 that is crimped to the core wire 12.

芯線１２の端部には、長さ方向の断面が扁平なハート型となすと共に、素線１４が互いに溶接された溶接領域２６が成形されている。この溶接領域２６は、図３に示すように、断面が半円状の凹部３１を有するアンビル３０と、このアンビル３０の凹部３１と幅が等しく、断面が二山状の凹部４１を有するホーン４０とで挟んで加圧すると共に、超音波振動を与えることにより、このような形とされている。   The end portion of the core wire 12 is formed into a heart shape having a flat cross section in the length direction, and a welding region 26 in which the strands 14 are welded to each other is formed. As shown in FIG. 3, the welding region 26 includes an anvil 30 having a concave portion 31 having a semicircular cross section, and a horn 40 having a concave portion 41 having a width equal to that of the concave portion 31 of the anvil 30 and having a cross section having a double mountain shape. And pressurizing between them and applying ultrasonic vibration to form such a shape.

上述した底板２１及びワイヤーバレル２２は、芯線１２のうち溶接領域２６を含む領域に外側から巻き付くように圧着される。   The bottom plate 21 and the wire barrel 22 described above are pressure-bonded so as to be wound from the outside around the core wire 12 including the welded region 26.

次に、本実施形態の端子金具付き電線１０の製造方法について説明する。まず、電線１１の端部の絶縁被覆１３を剥離して、芯線１２を露出させる。次に、芯線１２を上述したアンビル３０の凹部３１に位置決めし、上方に配されたホーン４０を下降させて、芯線１２を挟み込む。そして、超音波振動を与え、芯線１２の素線１４同士を溶接する。これにより、溶接領域２６が、芯線１２の長さ方向の断面が扁平なハート型となるように溶接・成形される（図３参照）。   Next, the manufacturing method of the electric wire 10 with a terminal metal fitting of this embodiment is demonstrated. First, the insulation coating 13 at the end of the electric wire 11 is peeled off to expose the core wire 12. Next, the core wire 12 is positioned in the concave portion 31 of the anvil 30 described above, and the horn 40 disposed above is lowered to sandwich the core wire 12. And ultrasonic vibration is given and the strands 14 of the core wire 12 are welded. Thereby, the welding region 26 is welded and formed so that the cross section in the length direction of the core wire 12 becomes a flat heart shape (see FIG. 3).

次に、図４に示すように、芯線１２を、溶接領域２６の二山部分が上方に向くように、端子金具２０の底板２１上に載置する。そして、端子金具２０を圧着装置のアンビル５０上に位置決めし、端子金具２０の上方に配されたクリンパ６０を下降させて、ワイヤーバレル２２を芯線１２に巻き付けるように湾曲させる。すると、ワイヤーバレル２２は芯線１２の二山部分にぴったりと沿うように押し付けられ、芯線１２は僅かに圧縮される（図５参照）。この結果、芯線１２の高さは圧縮されて若干低くなるとともに、幅は押し広げられて若干大きくなる。   Next, as shown in FIG. 4, the core wire 12 is placed on the bottom plate 21 of the terminal fitting 20 so that the two peaks of the welding region 26 face upward. Then, the terminal fitting 20 is positioned on the anvil 50 of the crimping device, the crimper 60 disposed above the terminal fitting 20 is lowered, and the wire barrel 22 is bent so as to be wound around the core wire 12. Then, the wire barrel 22 is pressed so as to closely follow the two ridges of the core wire 12, and the core wire 12 is slightly compressed (see FIG. 5). As a result, the height of the core wire 12 is compressed and slightly reduced, and the width is increased and slightly increased.

なお、端子金具２０を圧着する前における、溶接領域２６の高さ寸法である第１高さ寸法Ｈ１は、圧着後における溶接領域２６の高さ寸法である第２高さ寸法Ｈ２より若干高くなるように設定されている。また、端子金具２０を圧着する前における、溶接領域２６の幅寸法である第１幅寸法Ｗ１は、圧着後における溶接領域２６の幅寸法である第２幅寸法Ｗ２と比較して同等以下となるように設定されている。上述した超音波装置のアンビル３０およびホーン４０の凹部３１，４１の形状を予め設定しておくと共に、圧着装置のアンビル５０およびクリンパ６０の形状を予め設定しておくことにより、溶接領域２６において、各高さ寸法Ｈ１，Ｈ２、及び各幅寸法Ｗ１，Ｗ２が、上記の相対的な大小関係を有するようになっている。   In addition, the 1st height dimension H1 which is the height dimension of the welding area | region 26 before crimping the terminal metal fitting 20 becomes a little higher than the 2nd height dimension H2 which is the height dimension of the welding area | region 26 after crimping | compression-bonding. Is set to In addition, the first width dimension W1 that is the width dimension of the welded region 26 before crimping the terminal fitting 20 is equal to or less than the second width dimension W2 that is the width dimension of the welded region 26 after crimping. Is set to In the welding region 26, the shapes of the anvil 30 of the ultrasonic device and the concave portions 31 and 41 of the horn 40 are set in advance, and the shapes of the anvil 50 and the crimper 60 of the crimping device are set in advance. Each height dimension H1, H2 and each width dimension W1, W2 have the relative magnitude relationship described above.

このように、本実施形態によれば、電線１１の芯線１２に端子金具２０を圧着する前に、予め芯線１２を超音波溶接する構成であるから、素線１４同士の電気的接続が確実になされ、電気抵抗を低減させることができる。また、この超音波溶接の際に、芯線１２の形状を、端子金具２０を圧着後の芯線１２の形状と概ね同様となるように成形しておくので、端子金具２０を芯線１２に圧着する際に大きな力で圧着する必要は無く、端子金具２０と芯線１２とが電気的及び機械的に接続される程度の低圧縮で圧着するだけでよく、素線切れを防止することができる。   Thus, according to this embodiment, since the core wire 12 is ultrasonically welded in advance before the terminal fitting 20 is crimped to the core wire 12 of the electric wire 11, the electrical connection between the strands 14 is ensured. The electrical resistance can be reduced. Further, during the ultrasonic welding, the shape of the core wire 12 is formed so as to be substantially the same as the shape of the core wire 12 after the terminal fitting 20 is crimped, so that the terminal fitting 20 is crimped to the core wire 12. It is not necessary to crimp with a large force, and it is only necessary to perform crimping with low compression to such an extent that the terminal fitting 20 and the core wire 12 are electrically and mechanically connected.

また、このような端子金具付き電線の製造方法によれば、一般的に使用されている金属メッキが施されている端子金具をそのまま使用することができるので、製造コストも安く済む。
＜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。 In addition, according to such a method of manufacturing an electric wire with terminal fittings, a commonly used terminal fitting with metal plating can be used as it is, so that the manufacturing cost can be reduced.
<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）端子金具や芯線の材質・形態等について、上記実施形態に限定されるものではない。例えば端子金具としては、雄端子金具、雌端子金具、スプライス端子等、必要に応じて任意の端子金具を使用できる。   (1) About the material, form, etc. of a terminal metal fitting or a core wire, it is not limited to the said embodiment. For example, as the terminal fitting, any terminal fitting such as a male terminal fitting, a female terminal fitting, or a splice terminal can be used as necessary.

（２）端子金具を圧着する前の芯線の形状は、端子金具を圧着した後の芯線の形状と全く同様とすることもできる。   (2) The shape of the core wire before crimping the terminal fitting can be exactly the same as the shape of the core wire after crimping the terminal fitting.

１０…端子金具付き電線
１１…電線
１２…芯線
１３…絶縁被覆
１４…素線
２０…端子金具
２１…底板部（圧着部）
２２…ワイヤーバレル（圧着部）
２４…端子接続部
２６…溶接領域
２７…圧着部
Ｈ１…第１高さ寸法
Ｈ２…第２高さ寸法
Ｗ１…第１幅寸法
Ｗ２…第２幅寸法 DESCRIPTION OF SYMBOLS 10 ... Electric wire 11 with a terminal metal fitting ... Electric wire 12 ... Core wire 13 ... Insulation coating 14 ... Elementary wire 20 ... Terminal metal fitting 21 ... Bottom plate part (crimp part)
22 ... Wire barrel (crimp part)
24 ... terminal connection part 26 ... welding area 27 ... pressure bonding part H1 ... first height dimension H2 ... second height dimension W1 ... first width dimension W2 ... second width dimension

Claims (5)

複数の素線からなる芯線を有する電線と、前記電線から露出する前記芯線に圧着される圧着部を有する端子金具と、を備えた端子金具付き電線の製造方法であって、
前記芯線の外周面を覆う絶縁被覆を剥離して前記芯線を露出させる工程と、
露出した前記芯線を一対の治具で挟んで、前記治具により前記芯線に超音波振動を与えることにより、前記圧着部を圧着後の前記芯線の形状とほぼ同形状となるように前記素線が互いに溶接された溶接領域を形成する工程と、
前記芯線のうち前記溶接領域を含む領域に外側から巻き付けるようにして前記圧着部を圧着する工程と、を実行する端子金具付き電線の製造方法。 A method of manufacturing an electric wire with a terminal fitting, comprising: an electric wire having a core wire composed of a plurality of strands; and a terminal fitting having a crimping portion to be crimped to the core wire exposed from the electric wire,
Peeling the insulation coating covering the outer peripheral surface of the core wire to expose the core wire;
By sandwiching the exposed core wire between a pair of jigs and applying ultrasonic vibrations to the core wire with the jig, the wire is formed so that the crimped portion has substantially the same shape as the core wire after being crimped. Forming a weld region welded together;
And a step of crimping the crimping portion so as to be wound around an area including the welded region of the core wire from the outside. 前記圧着部が圧着される前における前記溶接領域の幅寸法である第１幅寸法は、前記圧着部が圧着された後における前記溶接領域の幅寸法である第２幅寸法以下に設定されていると共に、前記圧着部が圧着される前における前記溶接領域の高さ寸法である第１高さ寸法は、前記圧着部が圧着された後における前記溶接領域の高さ寸法である第２高さ寸法よりも高く設定されている請求項１に記載の端子金具付き電線の製造方法。 The first width dimension that is the width dimension of the welded region before the crimping portion is crimped is set to be equal to or less than the second width dimension that is the width dimension of the welded region after the crimping portion is crimped. In addition, the first height dimension that is the height dimension of the welded region before the crimping part is crimped is the second height dimension that is the height dimension of the welded region after the crimping part is crimped. The manufacturing method of the electric wire with a terminal metal fitting of Claim 1 set higher than this. 前記素線はアルミニウム又はアルミニウム合金からなる請求項１または請求項２に記載の端子金具付き電線の製造方法。 The method of manufacturing an electric wire with terminal fitting according to claim 1 or 2, wherein the element wire is made of aluminum or an aluminum alloy. 複数の素線からなる芯線を含む電線と、前記電線から露出する前記芯線に圧着される圧着部を有する端子金具と、を備えた端子金具付き電線であって、
前記電線から露出した前記芯線に超音波振動を与えることにより前記素線が互いに溶接されているとともに、前記圧着部は前記芯線のうち前記素線が互いに溶接されている溶接領域を含む領域に外側から巻き付けるように圧着されていることを特徴とする端子金具付き電線。 An electric wire with a terminal fitting comprising: an electric wire including a core wire composed of a plurality of strands; and a terminal fitting having a crimping portion to be crimped to the core wire exposed from the electric wire,
The strands are welded to each other by applying ultrasonic vibration to the core wire exposed from the electric wire, and the crimping portion is outside the region including the welded region in which the strands are welded to each other. An electric wire with a terminal fitting, characterized by being crimped so as to be wound around. 前記素線はアルミニウム又はアルミニウム合金からなることを特徴とする請求項４に記載の端子金具付き電線。 The electric wire with terminal fitting according to claim 4, wherein the element wire is made of aluminum or an aluminum alloy.
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JP2013016383A (en) * 2011-07-05 2013-01-24 Mitsubishi Cable Ind Ltd Conductor wire
JP2017087270A (en) * 2015-11-12 2017-05-25 住友電装株式会社 Method for manufacturing strip member made of metal wire including junction, method for manufacturing strip member made of metal wire with terminal, strip member made of metal wire including metal mold and junction
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JP2013016383A (en) * 2011-07-05 2013-01-24 Mitsubishi Cable Ind Ltd Conductor wire
JP2017087270A (en) * 2015-11-12 2017-05-25 住友電装株式会社 Method for manufacturing strip member made of metal wire including junction, method for manufacturing strip member made of metal wire with terminal, strip member made of metal wire including metal mold and junction
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