JP2017084600A - Wire with terminal and manufacturing method of wire with terminal - Google Patents

Wire with terminal and manufacturing method of wire with terminal Download PDF

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JP2017084600A
JP2017084600A JP2015211516A JP2015211516A JP2017084600A JP 2017084600 A JP2017084600 A JP 2017084600A JP 2015211516 A JP2015211516 A JP 2015211516A JP 2015211516 A JP2015211516 A JP 2015211516A JP 2017084600 A JP2017084600 A JP 2017084600A
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terminal
electric wire
core wire
wire
relay
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一成 佐倉
Kazunari Sakura
一成 佐倉
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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

PROBLEM TO BE SOLVED: To stably connect a relay conductor and a wire while suppressing different metal contact corrosion of the wire and a terminal.SOLUTION: A wire 20 with a terminal comprises: a terminal 22; a relay connection part 30 including a relay conductor which is a long member formed from a metal of the same kind as the terminal 22 and of which one end portion is connected to the terminal 22 and the other end portion is formed into a flat end portion 32b1; a wire 40 which includes a core wire 42 formed from a metal of a different type from the terminal 22 and a cover part 44 covering the core wire 42, and in which one end portion of the core wire 42 is formed into a core wire exposed part 42a exposed from the cover part 44 and the core wire exposed part 42a is connected to the flat end portion 32b1; and a seal part 50 covering a connection portion of the flat end portion 32b1 and the core wire exposed part 42a.SELECTED DRAWING: Figure 2

Description

この発明は、電線の芯線と端子とが異種金属で形成されている場合において、電線と端子とを接続するための技術に関する。   The present invention relates to a technique for connecting an electric wire and a terminal when the core wire and the terminal of the electric wire are formed of different metals.

特許文献1は、アルミニウム電線の導体端末に、銅電線の導体一端を接続し、当該接続部分を絶縁体で被覆するとともに、銅電線の導体他端に、銅または銅合金よりなる端子を圧着接続する接続構造を開示している。特許文献1では、銅電線とアルミニウム電線との接続部分を絶縁体で防水しておけば、銅電線と端子と間での異種金属接触腐食が抑制される。   In Patent Document 1, one end of a copper electric wire is connected to a conductor terminal of an aluminum electric wire, and the connection portion is covered with an insulator, and a terminal made of copper or a copper alloy is crimped to the other end of the copper electric wire. A connection structure is disclosed. In patent document 1, if the connection part of a copper electric wire and an aluminum electric wire is waterproofed with an insulator, the dissimilar metal contact corrosion between a copper electric wire and a terminal will be suppressed.

特開2009−9736号公報JP 2009-9736 A

しかしながら、特許文献1に開示の技術によると、銅電線の導体は、一般的な電線に用いられる単線又は撚線であり、アルミニウム電線の導体も、一般的な電線に用いられる単線又は撚線である。このため、アルミニウム電線の導体端末と銅電線の導体一端とを接続する際に両者の位置関係等が不安定となり、接続状態が不安定となる恐れがある。   However, according to the technique disclosed in Patent Document 1, the conductor of the copper electric wire is a single wire or stranded wire used for a general electric wire, and the conductor of the aluminum electric wire is also a single wire or stranded wire used for a general electric wire. is there. For this reason, when connecting the conductor terminal of an aluminum electric wire and the conductor one end of a copper electric wire, there exists a possibility that positional relationship etc. of both may become unstable and a connection state may become unstable.

そこで、本発明は、電線と端子との異種金属接触腐食を抑制しつつ、中継導体と電線とを安定して接続できるようにすることを目的とする。   Then, an object of this invention is to enable it to connect a relay conductor and an electric wire stably, suppressing the dissimilar-metal contact corrosion of an electric wire and a terminal.

上記課題を解決するため、第1の態様に係る端子付電線は、端子と、前記端子と同種金属により形成された長尺部材であり、一端部が前記端子に接続され、他端部が偏平な偏平端部に形成された中継導体を含む中継接続部と、前記端子とは異種金属により形成された芯線と前記芯線を覆う被覆部とを含み、前記芯線の一端部が前記被覆部から露出する芯線露出部に形成されると共に、前記芯線露出部が前記偏平端部に接続された電線と、前記偏平端部と前記芯線露出部との接続部分を覆う封止部とを備える。   In order to solve the above-mentioned problem, the electric wire with terminal according to the first aspect is a terminal and a long member formed of the same metal as the terminal, one end is connected to the terminal, and the other end is flat. A relay connecting portion including a relay conductor formed at a flat end portion; and a terminal including a core wire formed of a dissimilar metal and a covering portion covering the core wire, wherein one end portion of the core wire is exposed from the covering portion. The core wire exposed portion includes an electric wire connected to the flat end portion, and a sealing portion that covers a connection portion between the flat end portion and the core wire exposed portion.

第2の態様は、第1の態様に係る端子付電線であって、前記端子は、銅又は銅合金により形成され、前記中継導体は、銅又は銅合金により形成され、前記芯線は、アルミニウム又はアルミニウム合金により形成されているものである。   A second aspect is a terminal-attached electric wire according to the first aspect, wherein the terminal is made of copper or a copper alloy, the relay conductor is made of copper or a copper alloy, and the core wire is made of aluminum or It is formed of an aluminum alloy.

第3の態様は、第1又は第2の態様に係る端子付電線であって、前記封止部は、前記偏平端部と前記芯線露出部との接続部分を覆った状態で熱収縮した熱収縮チューブとされている。   A 3rd aspect is an electric wire with a terminal concerning the 1st or 2nd aspect, Comprising: The heat which heat-shrinked in the state where the above-mentioned sealing part covered the connection part of the above-mentioned flat end part and the above-mentioned core wire exposure part. It is a contraction tube.

第4の態様は、第1〜第3のいずれか1つの態様に係る端子付電線であって、前記封止部は、芯線露出部の先端側でも前記中継導体を覆っているものである。   A 4th aspect is an electric wire with a terminal which concerns on any one 1st-3rd aspect, Comprising: The said sealing part covers the said relay conductor also in the front end side of a core wire exposed part.

第5の態様は、第1〜第4のいずれか1つの態様に係る端子付電線であって、前記中継接続部は、その延在方向中間部において断面の外形が円形状を呈する円形部分を含み、前記封止部は、前記円形部分を覆っているものである。   A fifth aspect is a terminal-attached electric wire according to any one of the first to fourth aspects, wherein the relay connection portion includes a circular portion having a circular outer shape in cross section at an intermediate portion in the extending direction. The sealing part covers the circular part.

第6の態様は、第1〜第5のいずれか1つの態様に係る端子付電線であって、前記中継接続部は、前記芯線の延在方向中間部を覆う被覆部を含む単芯電線とされている。   A sixth aspect is a terminal-attached electric wire according to any one of the first to fifth aspects, wherein the relay connection portion includes a single-core electric wire including a covering portion that covers an intermediate portion in the extending direction of the core wire; Has been.

第7の態様は、第1〜第6のいずれか1つの態様に係る端子付電線であって、前記端子は、コネクタハウジングのキャビティに保持されるコネクタ用端子であり、前記封止部は、前記コネクタ用端子が前記キャビティ内に保持された状態で、前記中継導体のうち少なくとも前記キャビティの開口手前迄の部分を覆うものである。   A seventh aspect is a terminal-attached electric wire according to any one of the first to sixth aspects, wherein the terminal is a connector terminal held in a cavity of a connector housing, and the sealing portion is In a state where the connector terminal is held in the cavity, at least a portion of the relay conductor up to the front of the cavity is covered.

第8の態様は、第1〜第7のいずれか1つの態様に係る端子付電線であって、前記端子は、絶縁部材かしめ部を含み、前記封止部は、前記中継導体のうち前記絶縁部材かしめ部に至る部分までを覆っており、前記絶縁部材かしめ部は、前記封止部の端部にかしめ固定されているものである。   An eighth aspect is an electric wire with a terminal according to any one of the first to seventh aspects, wherein the terminal includes an insulating member caulking portion, and the sealing portion includes the insulating member of the relay conductor. It covers up to a portion reaching the member caulking portion, and the insulating member caulking portion is caulked and fixed to an end portion of the sealing portion.

第9の態様に係る端子付電線の製造方法は、(a)端子と、前記端子と同種金属により形成された長尺状の中継導体の一端部とを接続する工程と、(b)前記中継導体の他端部を、偏平な偏平端部に加工する工程と、(c)前記工程(a)及び工程(b)の後、前記偏平端部に、電線の端部の芯線露出部を接続する工程と、(d)前記偏平端部と前記芯線露出部との接続部分を封止部で覆う工程とを備え、前記工程(a)及び前記工程(b)を繰返すことで、前記端子に前記中継導体が接続された同形状の中間製造物を複数製造し、前記電線の種類を途中で変更して、前記工程(b)を複数回実施する。   A method for manufacturing a terminal-attached electric wire according to a ninth aspect includes: (a) connecting a terminal and one end of a long relay conductor formed of the same metal as the terminal; and (b) the relay. A step of processing the other end of the conductor into a flat flat end; and (c) after the step (a) and the step (b), connecting the core exposed portion at the end of the electric wire to the flat end. And (d) a step of covering a connecting portion between the flat end portion and the core wire exposed portion with a sealing portion, and repeating the steps (a) and (b) to the terminal. A plurality of intermediate products having the same shape to which the relay conductor is connected are manufactured, the type of the electric wire is changed in the middle, and the step (b) is performed a plurality of times.

第1の態様によると、電線の芯線と端子とが異種金属で形成され、電線が、端子と同種の金属で形成された中継導体を介して端子に接続されている。このため、端子と中継導体とは同種金属同士の接続部分となり、それらの間での異種金属接触腐食が抑制される。また、中継導体の偏平端部と電線の芯線露出部との接続部分を封止部で覆うことで、それらの接続部分への液体の浸入が抑制され、それらの間での異種金属接触腐食も抑制される。また、電線の芯線露出部は、偏平な偏平端部に接続されるため、中継導体と電線とを安定して接続できる。   According to the 1st aspect, the core wire and terminal of an electric wire are formed with a dissimilar metal, and the electric wire is connected to the terminal via the relay conductor formed with the same kind of metal as the terminal. For this reason, a terminal and a relay conductor become a connection part of the same kind of metals, and the dissimilar metal contact corrosion between them is suppressed. Also, by covering the connecting part between the flat end of the relay conductor and the exposed part of the core of the electric wire with the sealing part, the infiltration of liquid into those connecting parts is suppressed, and the contact corrosion of different metals between them is also prevented. It is suppressed. Further, since the exposed portion of the core wire of the electric wire is connected to the flat flat end portion, the relay conductor and the electric wire can be stably connected.

第2の態様によると、端子は、銅又は銅合金により形成され、中継導体は、銅又は銅合金により形成されているため、端子と中継導体との異種金属接触腐食が抑制される。また、芯線は、アルミニウム又はアルミニウム合金により形成されているため、電線の軽量化を図ることができる。また、銅又は銅合金により形成された中継導体の偏平端部と、アルミニウム又はアルミニウム合金により形成された芯線の芯線露出部との接続部分を封止部で覆うことで、当該接続部分への液体の浸入を抑制して、当該接続部分での異種金属接触腐食を抑制することができる。   According to the 2nd aspect, since the terminal is formed with copper or a copper alloy, and the relay conductor is formed with copper or a copper alloy, the dissimilar metal contact corrosion of a terminal and a relay conductor is suppressed. Moreover, since the core wire is formed of aluminum or an aluminum alloy, the weight of the electric wire can be reduced. In addition, by covering the connection portion between the flat end portion of the relay conductor formed of copper or copper alloy and the core wire exposed portion of the core wire formed of aluminum or aluminum alloy with a sealing portion, liquid to the connection portion is covered. It is possible to suppress foreign metal contact corrosion at the connection portion.

第3の態様によると、熱収縮チューブによって、偏平端部と芯線露出部との接続部分をより確実に封止することができる。   According to the 3rd aspect, the connection part of a flat end part and a core wire exposed part can be more reliably sealed with a heat contraction tube.

第4の態様によると、封止部は、芯線露出部の先端側でも前記中継導体を覆っているため、中継導体と封止部との間を通って液体が浸入し難い。   According to the 4th aspect, since the sealing part has covered the said relay conductor also at the front end side of the core wire exposure part, it is difficult for a liquid to penetrate between a relay conductor and a sealing part.

第5の態様によると、封止部は、中継接続部のうち断面の外形が円形状を呈する円形部分を覆っているため、中継接続部と封止部との間で隙間が発生し難く、より確実に止水できる。   According to the fifth aspect, since the sealing portion covers a circular portion having a circular cross-section of the relay connection portion, a gap is hardly generated between the relay connection portion and the sealing portion. Water can be stopped more reliably.

第6の態様によると、中継接続部として、一般的な単芯電線を用いることができる。   According to the 6th aspect, a general single core electric wire can be used as a relay connection part.

第7の態様によると、封止部によって、コネクタハウジングに保持される複数のコネクタ用端子間の絶縁を図ることができる。   According to the 7th aspect, the insulation between the several connector terminals hold | maintained at a connector housing can be aimed at by the sealing part.

第8の態様によると、端子の絶縁部材かしめ部を、封止部にかしめ固定することができる。   According to the eighth aspect, the insulating member caulking portion of the terminal can be caulked and fixed to the sealing portion.

第9の態様によると、記工程(a)及び工程(c)を繰返すことで、端子に中継導体が接続された同形状の中間製造物を効率よく複数製造できる。そして、電線の種類を途中で変更して、工程(b)を複数回実施することで、同形状の中間製造物に対して異なる種類の電線を接続した複数種の端子付電線を効率よく製造できる。   According to the ninth aspect, by repeating the step (a) and the step (c), it is possible to efficiently produce a plurality of intermediate products having the same shape in which the relay conductor is connected to the terminal. And by changing the type of electric wire in the middle and carrying out step (b) multiple times, efficiently producing multiple types of electric wires with terminals connecting different types of electric wires to the same shaped intermediate product it can.

実施形態に係る端子付電線を示す側面図である。It is a side view which shows the electric wire with a terminal concerning an embodiment. 図1において封止部内の構造を示す説明図である。It is explanatory drawing which shows the structure in a sealing part in FIG. 図1のIII−III断面図である。It is III-III sectional drawing of FIG. 図1のIV−IV線断面図である。It is the IV-IV sectional view taken on the line of FIG. 端子付電線の製造方法を示す説明図である。It is explanatory drawing which shows the manufacturing method of an electric wire with a terminal. 端子付電線の製造方法を示す説明図である。It is explanatory drawing which shows the manufacturing method of an electric wire with a terminal. 端子付電線の製造方法を示す説明図である。It is explanatory drawing which shows the manufacturing method of an electric wire with a terminal. 端子付電線の製造方法を示す説明図である。It is explanatory drawing which shows the manufacturing method of an electric wire with a terminal. 端子付電線の製造方法を示す説明図である。It is explanatory drawing which shows the manufacturing method of an electric wire with a terminal. 変形例に係る端子付電線を示す側面図である。It is a side view which shows the electric wire with a terminal concerning a modification. 図10において封止部内の構造を示す説明図である。It is explanatory drawing which shows the structure in a sealing part in FIG. 変形例に係る端子付電線の製造方法を示す説明図である。It is explanatory drawing which shows the manufacturing method of the electric wire with a terminal which concerns on a modification. 変形例に係る端子付電線の製造方法を示す説明図である。It is explanatory drawing which shows the manufacturing method of the electric wire with a terminal which concerns on a modification. 変形例に係る端子付電線の製造方法を示す説明図である。It is explanatory drawing which shows the manufacturing method of the electric wire with a terminal which concerns on a modification.

<端子付電線について>
以下、実施形態に係る端子付電線について説明する。
<About electric wires with terminals>
Hereinafter, the electric wire with a terminal concerning an embodiment is explained.

図1は端子付電線20を示す側面図であり、図2は図1において封止部50内の構造を示す説明図であり、図3は図1のIII−III断面図であり、図4は図1のIV−IV線断面図である。図1においては、端子22がコネクタ端子であることを前提に、コネクタハウジング10内に収容された状態を示している。   1 is a side view showing the terminal-attached electric wire 20, FIG. 2 is an explanatory view showing a structure inside the sealing portion 50 in FIG. 1, FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. 1. FIG. 1 shows a state in which the terminal 22 is accommodated in the connector housing 10 on the assumption that the terminal 22 is a connector terminal.

端子付電線20は、端子22と、中継接続部30と、電線40と、封止部50とを備える。   The electric wire with terminal 20 includes a terminal 22, a relay connection portion 30, an electric wire 40, and a sealing portion 50.

端子22は、電線40を相手側となる機器等に接続するために供される部分である。この端子22は、金属板をプレス加工等することによって形成された部材であり、電線側接続部24と、相手側接続部28とを含む。   The terminal 22 is a portion provided for connecting the electric wire 40 to a device or the like on the other side. The terminal 22 is a member formed by pressing a metal plate or the like, and includes a wire side connection portion 24 and a mating side connection portion 28.

電線側接続部24は、電線40側に接続される部分であり、ここでは、中継接続部30を介して電線40に接続される部分である。   The electric wire side connection part 24 is a part connected to the electric wire 40 side, and here is a part connected to the electric wire 40 via the relay connection part 30.

より具体的には、電線側接続部24は、導体接続部25と、絶縁部材かしめ部26とを備える。   More specifically, the electric wire side connection portion 24 includes a conductor connection portion 25 and an insulating member caulking portion 26.

導体接続部25は、中継接続部30の芯線32に接続される部分である。ここでは、導体接続部25は、底部25aの両側部から一対のかしめ部25bが立上がる形状に形成されている。芯線32の一方側の芯線露出部32aが底部25a上に配設された状態で、一対のかしめ部25bが当該芯線露出部32aに向けて変形されることで、導体接続部25が芯線露出部32aにかしめ固定される。等体接続部に対して芯線露出部32aが超音波溶接、抵抗溶接、半田付等によって接続されてもよい。   The conductor connection part 25 is a part connected to the core wire 32 of the relay connection part 30. Here, the conductor connection portion 25 is formed in a shape in which a pair of caulking portions 25b rises from both side portions of the bottom portion 25a. In a state where the core wire exposed portion 32a on one side of the core wire 32 is disposed on the bottom portion 25a, the pair of caulking portions 25b are deformed toward the core wire exposed portion 32a, so that the conductor connecting portion 25 is exposed to the core wire exposed portion. It is fixed by caulking to 32a. The core wire exposed portion 32a may be connected to the equal body connecting portion by ultrasonic welding, resistance welding, soldering, or the like.

絶縁部材かしめ部26は、芯線32の周囲を覆う絶縁部材34に接続される部分である。ここでは、絶縁部材かしめ部26は、底部26aの両側部から一対のかしめ部26bが立上がる形状に形成されている。そして、絶縁部材34が底部26a上に配設された状態で、一対のかしめ部25bが当該絶縁部材34に向けて変形されることで、絶縁部材かしめ部26が絶縁部材34にかしめ固定される。   The insulating member caulking portion 26 is a portion connected to an insulating member 34 that covers the periphery of the core wire 32. Here, the insulating member caulking portion 26 is formed in a shape in which a pair of caulking portions 26b rises from both side portions of the bottom portion 26a. Then, in a state where the insulating member 34 is disposed on the bottom portion 26 a, the pair of caulking portions 25 b are deformed toward the insulating member 34, so that the insulating member caulking portion 26 is caulked and fixed to the insulating member 34. .

本実施形態において、絶縁部材かしめ部26がかしめ固定される対象は、中継接続部30の一構成要素である絶縁部材34である。もっとも、後で説明する変形例では、絶縁部材かしめ部26がかしめ固定される対象は、中継導体232を覆う封止部250(熱収縮チューブ)である。   In the present embodiment, the object to which the insulating member caulking portion 26 is caulked and fixed is an insulating member 34 that is one component of the relay connecting portion 30. However, in a modification described later, the object to which the insulating member caulking portion 26 is caulked and fixed is a sealing portion 250 (heat shrinkable tube) that covers the relay conductor 232.

なお、絶縁部材かしめ部26は、省略されてもよい。   The insulating member caulking portion 26 may be omitted.

相手側接続部28は、電線40の相手側への接続に供される部分である。ここでは、端子22として、コネクタハウジング10内に保持されるコネクタ端子を想定しており、相手側接続部28は、相手側のコネクタ端子と嵌合接続される筒形状(いわゆるメス端子形状)に形成されている。端子としてコネクタ端子を想定した場合、相手側接続部は、ピン状又はタブ状のオス端子形状に形成されていてもよい。なお、コネクタハウジング10は、樹脂等で形成された部材であり、端子22を収容可能なキャビティ12が複数形成された部材である。本コネクタハウジング10が相手側コネクタハウジングに接続されることで、コネクタハウジング10に保持された複数の端子が相手側コネクタハウジング内に保持された端子に同時に接続される。   The mating side connection part 28 is a part provided for connection of the electric wire 40 to the mating side. Here, a connector terminal held in the connector housing 10 is assumed as the terminal 22, and the mating connection portion 28 has a cylindrical shape (so-called female terminal shape) that is fitted and connected to the mating connector terminal. Is formed. When a connector terminal is assumed as the terminal, the mating connection portion may be formed in a pin-shaped or tab-shaped male terminal shape. The connector housing 10 is a member formed of resin or the like, and is a member in which a plurality of cavities 12 that can accommodate the terminals 22 are formed. By connecting the connector housing 10 to the mating connector housing, a plurality of terminals held in the connector housing 10 are simultaneously connected to the terminals held in the mating connector housing.

なお、相手側接続部は、円形板状部に丸孔を形成した環状形状に形成され、相手側接続部に設けられたボルトが当該丸孔に挿通された状態で、ボルトにナットが締結固定される構成であってもよい。かかる端子は、アース端子等として用いられる。   The mating connection part is formed in an annular shape in which a circular hole is formed in the circular plate-shaped part, and a nut is fastened and fixed to the bolt with the bolt provided in the mating connection part inserted through the round hole. It may be configured. Such a terminal is used as a ground terminal or the like.

中継接続部30は、中継導体として芯線32を含む。ここでは、中継接続部30は、単芯電線によって形成されている。単芯電線は、1本の線状導体である芯線32を、被覆部としての絶縁部材34で覆った電線である。通常、絶縁部材34は、芯線32に軟化溶融した樹脂を押出被覆等することによって形成される。中継接続部30は、長尺な単芯電線を短尺に切断し、その両端部の絶縁部材34を皮剥ぎし、両端部に芯線32が露出した芯線露出部32a、32bを形成することによって形成されている。この状態では、絶縁部材は、芯線32の延在方向中間部を覆った状態で残存している。芯線32が1つの導体によって構成されているため、芯線32内を通って液体は浸入し難い。中継接続部30は、配線を主目的として用いられるものではなく、配線を主目的とする電線40と端子22との間を中継接続するためのものであるため、なるべく短尺であることが好ましい。もっとも、中継接続部30と電線40の芯線露出部42aとの接続部分は太径となり、コネクタハウジング10のキャビティ12内に収容することは困難となるため、中継接続部30は、上記接続部分をキャビティ12外に配設できる程度の長さ寸法であることが好ましい。これらの点からして、中継接続部30の長さ寸法は、例えば、20mm〜100mmであることが好ましい。   The relay connection part 30 includes a core wire 32 as a relay conductor. Here, the relay connection part 30 is formed of a single core electric wire. A single core electric wire is an electric wire which covered the core wire 32 which is one linear conductor with the insulating member 34 as a coating | coated part. Usually, the insulating member 34 is formed by extrusion-coating a softened and melted resin on the core wire 32. The relay connection portion 30 is formed by cutting a long single-core electric wire into a short length, peeling off the insulating members 34 at both ends, and forming core wire exposed portions 32a and 32b in which the core wire 32 is exposed at both ends. Has been. In this state, the insulating member remains in a state where the intermediate portion in the extending direction of the core wire 32 is covered. Since the core wire 32 is composed of one conductor, it is difficult for liquid to enter through the core wire 32. The relay connection part 30 is not used mainly for wiring, but is used for relay connection between the electric wire 40 whose main purpose is wiring and the terminal 22, and is preferably as short as possible. However, since the connecting portion between the relay connecting portion 30 and the core wire exposed portion 42a of the electric wire 40 has a large diameter, and it is difficult to accommodate in the cavity 12 of the connector housing 10, the relay connecting portion 30 The length is preferably such that it can be disposed outside the cavity 12. From these points, it is preferable that the length dimension of the relay connection part 30 is, for example, 20 mm to 100 mm.

上記芯線32は、端子22と同種金属により形成された長尺部材である。例えば、端子22が銅又は銅合金(黄銅等)により形成されている場合、芯線32は銅又は銅合金によって形成されている。なお、端子22等の表面に錫メッキ、金メッキ等が形成されていてもよい。端子22の表面に施されるメッキ金属は、芯線32と異種金属接触腐食を生じさせ難い材料(錫メッキ等)であることが好ましい。なお、端子22等の表面にメッキが施されていても、当該プレス剪断面等において露出する基材が、当該基材近くの他の金属(アルミニウム、アルミニウム合金)の金属腐食に対して支配的となる。このため、端子の基材との関係で、本実施形態のような対策を採用することは好ましい。   The core wire 32 is a long member formed of the same metal as the terminal 22. For example, when the terminal 22 is formed of copper or a copper alloy (brass or the like), the core wire 32 is formed of copper or a copper alloy. Note that tin plating, gold plating, or the like may be formed on the surface of the terminal 22 or the like. The plated metal applied to the surface of the terminal 22 is preferably a material (tin plating or the like) that is unlikely to cause contact corrosion with the core wire 32. Even if the surface of the terminal 22 or the like is plated, the base material exposed at the press shear surface or the like is dominant over the metal corrosion of other metals (aluminum, aluminum alloy) near the base material. It becomes. For this reason, it is preferable to adopt a countermeasure as in this embodiment in relation to the base material of the terminal.

芯線32の一端側の芯線露出部32aは、上記導体接続部25に接続されている。ここでは、導体接続部25が芯線露出部32aにかしめ接続されることで、両者が電気的及び機械的に接続されている。また、ここでは、絶縁部材かしめ部26が絶縁部材34の芯線露出部32a側の端部にかしめ固定されることでも、絶縁部材かしめ部26と中継接続部30の一端部とが機械的に固定されている。   The core wire exposed portion 32 a on one end side of the core wire 32 is connected to the conductor connecting portion 25. Here, the conductor connection part 25 is connected by caulking to the core wire exposed part 32a, so that both are electrically and mechanically connected. In addition, here, the insulating member caulking portion 26 and the one end portion of the relay connecting portion 30 are mechanically fixed even when the insulating member caulking portion 26 is caulked and fixed to the end portion of the insulating member 34 on the core wire exposed portion 32a side. Has been.

芯線32の他端側の芯線露出部32bの少なくとも一部は、偏平な偏平端部32b1に形成されている。ここでは、芯線32の他端部であって絶縁部材34から露出する芯線露出部32bのうち最も先端側の部分が偏平端部32b1に形成されることによって、芯線32の他端部に偏平端部32b1が形成されている。偏平端部32b1は、板状に形成されており、ここでは、その両面が平面を呈している。偏平端部は、1つの平面を有する形状であってもよい。また、ここでは、偏平端部は、上記芯線32を押潰して偏平にしたものであるため、芯線32の外径寸法よりも大きく広がる幅寸法に形成されている。   At least a part of the core wire exposed portion 32b on the other end side of the core wire 32 is formed in a flat flat end portion 32b1. Here, the most distal end portion of the core wire exposed portion 32b exposed from the insulating member 34, which is the other end portion of the core wire 32, is formed in the flat end portion 32b1, thereby forming a flat end on the other end portion of the core wire 32. A portion 32b1 is formed. The flat end portion 32b1 is formed in a plate shape, and here both surfaces thereof are flat. The flat end portion may have a shape having one plane. In addition, here, the flat end portion is formed by crushing the core wire 32 so as to be flat. Therefore, the flat end portion is formed in a width dimension that is larger than the outer diameter dimension of the core wire 32.

また、芯線露出部32bのうち絶縁部材34に近い部分は、横断面円形状(軸方向に対して直交する面における断面形状)の円形部分32cに形成され、偏平端部32b1と円形部分32cとの間の部分が横断面円形から徐々に偏平となる中間部分に形成されている。当該形状への加工は、例えば、芯線露出部32bの先端部をプレスすること等によってなされる。   Further, a portion of the core wire exposed portion 32b close to the insulating member 34 is formed in a circular portion 32c having a circular cross section (a cross sectional shape in a plane orthogonal to the axial direction), and the flat end portion 32b1 and the circular portion 32c The intermediate portion is formed in an intermediate portion that gradually becomes flat from a circular cross section. The processing into the shape is performed, for example, by pressing the tip of the core wire exposed portion 32b.

なお、中継接続部30が被覆を施した単芯電線によって形成されることは必須ではなく、その場合の変形例については、後述する。   In addition, it is not essential for the relay connection part 30 to be formed of a coated single core electric wire, and a modification example in that case will be described later.

電線40は、芯線42と、被覆部44とを備える。芯線42は、端子22とは異種金属により形成された金属製線状部材である。端子22が銅又は銅合金によって形成されている場合、芯線42は、例えば、アルミニウム又はアルミニウム合金により形成されている。比較的長尺な配線材である電線40の芯線42をアルミニウム又はアルミニウム合金により形成することで、端子付電線20の軽量化を図ることができる。   The electric wire 40 includes a core wire 42 and a covering portion 44. The core wire 42 is a metal wire member made of a metal different from the terminal 22. When the terminal 22 is formed of copper or a copper alloy, the core wire 42 is formed of, for example, aluminum or an aluminum alloy. By forming the core wire 42 of the electric wire 40, which is a relatively long wiring material, from aluminum or an aluminum alloy, the terminal-attached electric wire 20 can be reduced in weight.

芯線42は、1本の金属線によって形成された単芯線であってもよいし、複数の金属素線によって構成された撚り合わせ線であってもよい。ここでは、芯線42が撚り合わせ線である例で説明する。被覆部44は、上記芯線42の周囲を覆う絶縁部材である。通常、芯線42の周囲に軟化溶融した樹脂を押出被覆することによって、被覆部44が形成される。   The core wire 42 may be a single core wire formed by a single metal wire, or may be a twisted wire formed by a plurality of metal strands. Here, an example in which the core wire 42 is a twisted wire will be described. The covering portion 44 is an insulating member that covers the periphery of the core wire 42. Usually, the coating portion 44 is formed by extrusion coating a softened and melted resin around the core wire 42.

電線40の端部には、芯線42の一端部が被覆部44から露出する芯線露出部42aが形成されている。芯線露出部42aは、電線40の端部の被覆部44を皮剥ぎすること等により形成される。この電線40は、単独又は他の電線と共に車両等の配設対象箇所に配設された状態で、端子22の接続先となる部分と電線40の他端部に接続された部分とを電気的に接続する配線材として用いられる。   An end portion of the electric wire 40 is formed with a core wire exposed portion 42 a in which one end portion of the core wire 42 is exposed from the covering portion 44. The core wire exposed portion 42 a is formed by peeling the covering portion 44 at the end of the electric wire 40. The electric wire 40 is electrically connected to a portion to which the terminal 22 is connected and a portion connected to the other end portion of the electric wire 40 in a state where the electric wire 40 is provided alone or together with other electric wires in an arrangement target location such as a vehicle. Used as a wiring material to be connected to

上記電線40の芯線露出部42aは、偏平端部32b1に接続されている。ここでは、芯線露出部42aは、偏平端部32b1の一方の主面に接続されている。芯線露出部42aと偏平端部32b1との接続は、超音波溶接、抵抗溶接、半田付等によりなされる。芯線露出部42aが複数の金属素線によって構成されている場合、当該複数の金属素線を2つに分け、一方を偏平端部32b1の一方の主面に、他方を偏平端部32b1の他方の主面にそれぞれ接続してもよい。いずれにせよ、芯線露出部42aは、偏平端部32b1の平面に接続されるため、それらは安定して接続される。   The exposed core portion 42a of the electric wire 40 is connected to the flat end portion 32b1. Here, the core wire exposed portion 42a is connected to one main surface of the flat end portion 32b1. The connection between the core wire exposed portion 42a and the flat end portion 32b1 is made by ultrasonic welding, resistance welding, soldering, or the like. When the core wire exposed portion 42a is composed of a plurality of metal strands, the plurality of metal strands are divided into two, one on one main surface of the flat end portion 32b1 and the other on the other end of the flat end portion 32b1. You may connect to the main surface of each. In any case, since the core wire exposed part 42a is connected to the plane of the flat end part 32b1, they are stably connected.

なお、芯線露出部42aの先端部は、偏平端部32b1に接続され、円形部分32cには達していない。このため、偏平端部32b1と芯線露出部42aとを接続した状態で、円形部分32cの外周全体が外側に向けて露出している。   In addition, the front-end | tip part of the core wire exposed part 42a is connected to the flat end part 32b1, and has not reached the circular part 32c. For this reason, the entire outer periphery of the circular portion 32c is exposed outward while the flat end portion 32b1 and the core wire exposed portion 42a are connected.

封止部50は、上記偏平端部32b1と芯線露出部42aとの接続部分を覆うように構成されている。この封止部50により、偏平端部32b1と芯線露出部42aとの接続部分に対する液体(電解液)の浸入が抑制される。   The sealing portion 50 is configured to cover a connection portion between the flat end portion 32b1 and the core wire exposed portion 42a. By this sealing part 50, the infiltration of the liquid (electrolytic solution) into the connection part between the flat end part 32b1 and the core wire exposed part 42a is suppressed.

ここでは、封止部50は、偏平端部32b1と芯線露出部42aとの接続部分を覆った状態で熱収縮した熱収縮チューブにより構成されている(図8参照)。熱収縮チューブ58は、ポリオレフィン系樹脂等によって形成された筒状の部材である。熱収縮チューブ58は、例えば、押し出し成形により比較的細い筒状に成形された部材が、架橋処理された後、さらに、加熱された状態で太い筒状へ引き伸ばされ、この後冷却されることによって製造される。このようにして得られた熱収縮チューブ58は、加熱された場合、引き伸ばされる前の細い筒状まで収縮する形状記憶特性を有する。   Here, the sealing part 50 is comprised by the heat-shrinkable tube which heat-shrinked in the state which covered the connection part of the flat end part 32b1 and the core wire exposed part 42a (refer FIG. 8). The heat shrinkable tube 58 is a cylindrical member formed of a polyolefin resin or the like. The heat-shrinkable tube 58 is formed by, for example, a member that has been formed into a relatively thin cylindrical shape by extrusion molding, and further stretched into a thick cylindrical shape in a heated state, and then cooled. Manufactured. The heat-shrinkable tube 58 thus obtained has a shape memory characteristic that, when heated, shrinks to a thin cylindrical shape before being stretched.

そして、偏平端部32b1と芯線露出部42aとの接続部分に熱収縮前の熱収縮チューブ58を被せると共に、当該接続部分と熱収縮チューブ58との間にホットメルト等の熱可塑性接着剤を配設した状態で、熱収縮チューブ58を加熱する。すると、熱収縮チューブ58が熱収縮し、偏平端部32b1と芯線露出部42aとの接続部分、さらに、その前後の部分を覆った状態で、前記接続部分を封止する。この際、熱可塑性接着剤59は、熱収縮した熱収縮チューブ58である封止部50と、偏平端部32b1と芯線露出部42aとの接続部分、さらに、その前後の部分との間に充填状に入り込む。これにより、偏平端部32b1と芯線露出部42aとの接続部分がより確実に封止される。   Then, a heat shrinkable tube 58 before heat shrinkage is put on the connection portion between the flat end portion 32b1 and the core wire exposed portion 42a, and a thermoplastic adhesive such as hot melt is disposed between the connection portion and the heat shrinkable tube 58. In the installed state, the heat-shrinkable tube 58 is heated. Then, the heat-shrinkable tube 58 is heat-shrinked, and the connecting portion is sealed in a state where the connecting portion between the flat end portion 32b1 and the core wire exposed portion 42a and the portions before and after the connecting portion are covered. At this time, the thermoplastic adhesive 59 is filled between the sealing portion 50, which is the heat-shrinkable heat-shrinkable tube 58, the connecting portion between the flat end portion 32b1 and the core wire exposed portion 42a, and the front and rear portions thereof. Get into the shape. Thereby, the connection part of the flat end part 32b1 and the core wire exposed part 42a is sealed more reliably.

上記のように封止部50が偏平端部32b1と芯線露出部42aとの接続部分を覆った状態で、封止部50は、芯線露出部42aの先端側でも中継導体である芯線32を覆っている。ここでは、中継接続部30側の芯線露出部32bのうち基端側の円形部分32cには、電線40側の芯線露出部42aは接続されていない。封止部50は、芯線露出部42aの先端側で当該円形部分32cをも覆っている。これにより、芯線32と絶縁部材34との間を通った液体の進入を抑制できる。すなわち、中継接続部30のうち端子22側の端部では、芯線露出部32aは封止されず外部に露出している。このため、当該端部で、芯線32と絶縁部材34との間に液体が浸入する恐れがある。そこで、中継接続部30の絶縁部材34と電線40の芯線露出部42aとの間で、封止部50が上記円形部分32cを覆って当該円形部分32cと封止部50との間を通った液体の通過を抑制することで、異種金属接触部分である偏平端部32b1と芯線露出部42aとの接続部分への液体の浸入をより確実に抑制できる。もっとも、封止部50が当該芯線露出部42aの先端側で芯線32を覆っていることは必須ではない。   With the sealing portion 50 covering the connecting portion between the flat end portion 32b1 and the core wire exposed portion 42a as described above, the sealing portion 50 covers the core wire 32 that is a relay conductor also at the tip side of the core wire exposed portion 42a. ing. Here, the core wire exposed portion 42a on the electric wire 40 side is not connected to the circular portion 32c on the proximal end side of the core wire exposed portion 32b on the relay connection portion 30 side. The sealing portion 50 also covers the circular portion 32c on the distal end side of the core wire exposed portion 42a. Thereby, the approach of the liquid which passed between the core wire 32 and the insulating member 34 can be suppressed. That is, the core wire exposed portion 32a is exposed to the outside without being sealed at the end of the relay connecting portion 30 on the terminal 22 side. For this reason, liquid may enter between the core wire 32 and the insulating member 34 at the end. Therefore, between the insulating member 34 of the relay connection part 30 and the core wire exposed part 42a of the electric wire 40, the sealing part 50 covers the circular part 32c and passes between the circular part 32c and the sealing part 50. By suppressing the passage of the liquid, it is possible to more reliably prevent the liquid from entering the connecting portion between the flat end portion 32b1 which is a dissimilar metal contact portion and the core wire exposed portion 42a. However, it is not essential that the sealing portion 50 covers the core wire 32 at the distal end side of the core wire exposed portion 42a.

また、上記中継接続部30は、その延在方向中間部において、断面の外形が円形状を呈する円形部分を含む。ここでは、中継接続部30は、芯線露出部32bの基端部にある円形部分32cと、絶縁部材34が被覆する部分である円形部分34cとを含む。封止部50は、それらの円形部分32c、34cをも覆っている。封止部50は、偏平端部32b1と芯線露出部42aとの接続部分の周囲を、それらの接続後に覆うものであるため、接続対象の表面はなるべく凹凸がなく円滑な外向きの弧を描いていることが好ましい。封止部50が、それらの円形部分32c、34cをも覆えば、封止部50と円形部分32c、34cとの隙間をより確実になくすことができ、偏平端部32b1と芯線露出部42aとの接続部分への液体の浸入をより確実に抑制できる。もっとも、封止部50が当該円形部分32c、34cの両方を覆っていることは必須ではなく、また、当該円形部分32c、34cのいずれか一方を覆っていることも必須ではない。   Moreover, the said relay connection part 30 contains the circular part which the external shape of a cross section exhibits circular shape in the extension direction intermediate part. Here, the relay connecting portion 30 includes a circular portion 32c at the base end portion of the core wire exposed portion 32b and a circular portion 34c that is a portion covered by the insulating member 34. The sealing portion 50 also covers those circular portions 32c and 34c. Since the sealing portion 50 covers the periphery of the connection portion between the flat end portion 32b1 and the core wire exposed portion 42a after the connection, the surface to be connected has a smooth outward arc with as little unevenness as possible. It is preferable. If the sealing portion 50 also covers the circular portions 32c and 34c, the gap between the sealing portion 50 and the circular portions 32c and 34c can be eliminated more reliably, and the flat end portion 32b1 and the core wire exposed portion 42a Intrusion of liquid into the connecting portion can be more reliably suppressed. However, it is not essential that the sealing portion 50 covers both the circular portions 32c and 34c, and it is not essential that either one of the circular portions 32c and 34c is covered.

また、封止部50のうち電線40側の端部は、電線40の被覆部44を覆っている。これにより、封止部50のうち電線40側の端部からの液体の浸入をより確実に抑制できる。   Further, the end portion on the electric wire 40 side of the sealing portion 50 covers the covering portion 44 of the electric wire 40. Thereby, the penetration | invasion of the liquid from the edge part by the side of the electric wire 40 among the sealing parts 50 can be suppressed more reliably.

なお、封止部50が熱収縮チューブ58により構成されていることは必須ではない。上記封止対象部分をインサート物として金型成型された樹脂成型部分、封止対象部分に巻付けられたフィルム、粘着テープ等であってもよい。   In addition, it is not essential that the sealing part 50 is comprised by the heat contraction tube 58. FIG. It may be a resin-molded part molded by using the sealing target part as an insert, a film wound around the sealing target part, an adhesive tape, or the like.

以上のように構成された端子付電線20によると、電線40の芯線42と端子22とが異種金属で形成されているところ、電線40の芯線42は、端子22と同種の金属で形成された中継導体である芯線32を介して端子22に接続されている。このため、端子22と芯線32とは、同種金属同士の接続部分となり、それらの間での異種金属接触腐食が抑制される。また、芯線32の偏平端部32b1と電線40の芯線露出部42aとの接続部分を封止部50で覆うことで、それらの接続部分への液体の浸入が抑制され、それらの間での異種金属接触腐食も抑制される。また、電線40の芯線露出部42aは、偏平端部32b1に接続されるため、偏平端部32b1に対して芯線露出部42aを一定位置及び姿勢で配設した状態で、それらの接続作業を行うことができ、また、接続後の状態も安定する。このため、中継導体である芯線32と電線40の芯線32とを安定して接続することができる。   According to the terminal-attached electric wire 20 configured as described above, the core wire 42 of the electric wire 40 and the terminal 22 are formed of different kinds of metals, but the core wire 42 of the electric wire 40 is formed of the same kind of metal as the terminal 22. It is connected to the terminal 22 through a core wire 32 that is a relay conductor. For this reason, the terminal 22 and the core wire 32 become a connection part of the same kind of metals, and the dissimilar metal contact corrosion between them is suppressed. Further, by covering the connecting portion between the flat end portion 32b1 of the core wire 32 and the core wire exposed portion 42a of the electric wire 40 with the sealing portion 50, the intrusion of liquid into those connecting portions is suppressed, and different types of them are present between them. Metal contact corrosion is also suppressed. Further, since the core wire exposed portion 42a of the electric wire 40 is connected to the flat end portion 32b1, the connecting operation is performed in a state where the core wire exposed portion 42a is disposed at a fixed position and posture with respect to the flat end portion 32b1. In addition, the state after connection is stable. For this reason, the core wire 32 which is a relay conductor and the core wire 32 of the electric wire 40 can be stably connected.

なお、芯線32の偏平端部32b1と電線40の芯線露出部42aとの接続部分を封止部50によって封止することは、電線の芯線と端子との接続部分を封止するよりも容易かつ確実に実現できる。その理由は下記の通りである。まず、芯線32の偏平端部32b1と電線40の芯線露出部42aとの接続部分は、芯線と端子との接続構造に比べ、凹凸が少ない単純な形状であり、圧着形状に比べ比較的ばらつきが少なく形状であるため、封止部50によってより確実に封止し易い。また、端子の近傍部分を封止する際には、端子の相手側接続部と相手側の部分との接触を阻害しないように、封止用の熱可塑性接着剤が相手側接続部へ流出しないように配慮する必要性が高いが、芯線32の偏平端部32b1と電線40の芯線露出部42aとの接続部分に対してはそのような必要性は低いため、当該封止作業を容易に行える。しかも、電線同士の接続部分を封止する技術は、従来から数多く実施されているところ、そのような技術を、芯線32の偏平端部32b1と電線40の芯線露出部42aとの接続部分を封止する技術に適用することができる。また、端子22と中継接続部30との接続部分に封止構造を形成しなくてもよいため、端子22が大型化せず、従って、キャビティ12内に問題なく挿入できるという利点がある。   It is easier to seal the connecting portion between the flat end portion 32b1 of the core wire 32 and the exposed core portion 42a of the electric wire 40 with the sealing portion 50 than to seal the connecting portion between the core wire and the terminal of the electric wire. Realized reliably. The reason is as follows. First, the connection portion between the flat end portion 32b1 of the core wire 32 and the core wire exposed portion 42a of the electric wire 40 has a simple shape with less unevenness than the connection structure of the core wire and the terminal, and relatively varies compared to the crimped shape. Since the shape is small, it is easy to be surely sealed by the sealing portion 50. Also, when sealing the vicinity of the terminal, the sealing thermoplastic adhesive does not flow out to the counterpart connection so as not to impede contact between the counterpart connection and the counterpart of the terminal. However, since such a necessity is low for the connection portion between the flat end portion 32b1 of the core wire 32 and the core wire exposed portion 42a of the electric wire 40, the sealing operation can be easily performed. . Moreover, many techniques for sealing the connecting portions of the electric wires have been practiced so far. Such techniques are used to seal the connecting portions of the flat end portion 32b1 of the core wire 32 and the core wire exposed portion 42a of the electric wire 40. It can be applied to stopping technology. Further, since it is not necessary to form a sealing structure at the connection portion between the terminal 22 and the relay connection portion 30, there is an advantage that the terminal 22 does not increase in size and can be inserted into the cavity 12 without any problem.

また、芯線露出部42aを偏平端部32b1の平面上に配設した状態でそれらを接続しているため、中継用の圧着端子を用いる場合と比較すると、それらの接続部分を比較的コンパクトにすることができる。   In addition, since the core wire exposed portions 42a are connected in a state where they are arranged on the flat end portion 32b1, the connecting portions thereof are made relatively compact as compared with the case where a crimp terminal for relay is used. be able to.

また、通常、端子としては、接続される電線の外径(芯線の外径又は被覆部の外径)に応じた種類のものが準備される。所定の外径の芯線、及び、所定の外径の被覆部に対して適切に端子を圧着接続できるようにするためである。本実施形態では、電線40の芯線露出部42aを端子22ではなく中継接続部30の偏平端部32b1に接続しているため、電線40の外径を問わず、芯線露出部42aを偏平端部32b1に溶接等で接続できる。このため、端子22及び中継接続部30として1つの種類を準備しておき、中継接続部30を多様な外径の電線40に接続することができるこれにより、電線40の外径に応じた種類に比べて、端子22の種類を減らすこともできる。特に、導電率が軟銅電線の50〜60%と低いアルミニウム電線を電線40として用いる場合、銅電線よりも太いサイズを用いることとなる。このため、ハウジング10の最大適合サイズの銅電線をアルミニウム電線に置換えようとした場合、物理的に端子付電線をハウジング内に挿入できないケースが発生し、設計制約となっていた。本発明を用いればこの問題も解決することができる。この点については、次の製造方法の説明においても、より具体的に説明する。   Moreover, as a terminal, the thing of the kind according to the outer diameter (the outer diameter of a core wire or the outer diameter of a coating | coated part) of the electric wire connected is prepared. This is because a terminal can be appropriately crimped and connected to a core wire having a predetermined outer diameter and a covering portion having a predetermined outer diameter. In this embodiment, since the core wire exposed portion 42a of the electric wire 40 is connected to the flat end portion 32b1 of the relay connecting portion 30 instead of the terminal 22, the core wire exposed portion 42a is connected to the flat end portion regardless of the outer diameter of the electric wire 40. It can be connected to 32b1 by welding or the like. For this reason, one kind is prepared as the terminal 22 and the relay connection part 30, and the relay connection part 30 can be connected to the electric wire 40 having various outer diameters. Compared to the above, the types of terminals 22 can be reduced. In particular, when an aluminum electric wire having a conductivity as low as 50 to 60% of an annealed copper electric wire is used as the electric wire 40, a size larger than that of the copper electric wire is used. For this reason, when it was going to replace the copper electric wire of the maximum compatible size of the housing 10 with an aluminum electric wire, the case where the electric wire with a terminal could not be physically inserted in the housing occurred, and it became a design restriction. This problem can be solved by using the present invention. This point will be described more specifically in the following description of the manufacturing method.

また、端子22が銅又は銅合金により形成され、中継導体である芯線32は銅又は銅合金により形成されているため、それらの間での異種金属接触腐食が抑制される。また、電線40の芯線42は、アルミニウム又はアルミニウム合金により形成されているため、比較的長尺な電線40の軽量化を図ることができ、端子付電線20全体として軽量化を図ることができる。また、銅又は銅合金により形成された芯線32の偏平端部32b1と、アルミニウム又はアルミニウム合金により形成された芯線42の芯線露出部42aとの接続部分を封止部50で覆うことで、当該接続部分への液体の浸入を抑制して、その部分での異種金属接触腐食を抑制することができる。   Moreover, since the terminal 22 is formed of copper or a copper alloy and the core wire 32 that is a relay conductor is formed of copper or a copper alloy, the contact corrosion between different metals between them is suppressed. Moreover, since the core wire 42 of the electric wire 40 is formed of aluminum or an aluminum alloy, it is possible to reduce the weight of the relatively long electric wire 40 and to reduce the weight of the terminal-equipped electric wire 20 as a whole. Further, by covering the connecting portion between the flat end portion 32b1 of the core wire 32 formed of copper or copper alloy and the core wire exposed portion 42a of the core wire 42 formed of aluminum or aluminum alloy with the sealing portion 50, the connection is made. It is possible to suppress the intrusion of liquid into the part, and to suppress the contact with different metals in the part.

また、封止部50は、熱収縮した熱収縮チューブ58により形成されているため、偏平端部32b1と芯線露出部42aとの接続部分をより確実に封止することができる。なお、中継接続部30は比較的短尺であるため、偏平端部32b1と芯線露出部42aとの接続部分を、熱収縮前の熱収縮チューブ58に挿入する作業も比較的容易に行える。   Moreover, since the sealing part 50 is formed by the heat-shrinkable tube 58 which has been heat-shrinked, the connection part between the flat end part 32b1 and the core wire exposed part 42a can be more reliably sealed. In addition, since the relay connection part 30 is comparatively short, the operation | work which inserts the connection part of the flat end part 32b1 and the core wire exposed part 42a in the heat contraction tube 58 before heat contraction can also be performed comparatively easily.

また、封止部50は、芯線露出部42aの先端側で中継導体である芯線32を覆っているため、芯線32と封止部50との間を通って液体が浸入し難く、異種金属接触腐食をより確実に抑制できる。   Further, since the sealing portion 50 covers the core wire 32 that is a relay conductor on the tip end side of the core wire exposed portion 42a, it is difficult for liquid to enter between the core wire 32 and the sealing portion 50, and different metal contacts Corrosion can be suppressed more reliably.

また、封止部50は、円形部分32c、34cを覆っているため、封止部50と円形部分32c、34cとの間で隙間が発生し難く、それらの間でより確実に止水でき、異種金属接触腐食をより確実に抑制できる。   Further, since the sealing portion 50 covers the circular portions 32c and 34c, a gap is hardly generated between the sealing portion 50 and the circular portions 32c and 34c, and water can be stopped more reliably between them. Different metal contact corrosion can be suppressed more reliably.

また、中継接続部30としては、一般的な単芯電線を用いることができるため、コスト低減が可能となる。また、単芯電線により形成された中継接続部30を用いることで、電線用の汎用的な端子を用いることができる。   Moreover, since a common single core electric wire can be used as the relay connection part 30, cost reduction is attained. Moreover, the universal terminal for electric wires can be used by using the relay connection part 30 formed with the single core electric wire.

<端子付電線の製造方法について>
上記端子付電線20の製造方法例について説明する。まず、1つの端子付電線20の製造方法に着目して説明する。
<About manufacturing method of electric wire with terminal>
The example of a manufacturing method of the said electric wire 20 with a terminal is demonstrated. First, a description will be given focusing on a manufacturing method of one electric wire 20 with a terminal.

図5に示すように、端子22と、単芯電線を短尺に切断し、両端部に芯線露出部32a、32Bbを形成した中継接続部30Bを準備する。なお、この段階では、芯線露出部32Bbは、偏平形状に加工されていない。そして、中継接続部30Bの一方側の芯線露出部32aを、端子22の導体接続部25内に配設すると共に、絶縁部材34の一方側の端部を端子22の絶縁部材かしめ部26内に配設して、端子22の導体接続部25を芯線露出部32aに圧着すると共に、絶縁部材かしめ部26を絶縁部材34の端部に圧着する。これにより、端子22が、中継接続部30Bの一方側の端部に接続される(工程(a))。   As shown in FIG. 5, the terminal 22 and the single-core electric wire are cut into short pieces, and a relay connection portion 30B is prepared in which core wire exposed portions 32a and 32Bb are formed at both ends. At this stage, the core wire exposed portion 32Bb is not processed into a flat shape. Then, the core wire exposed portion 32a on one side of the relay connecting portion 30B is disposed in the conductor connecting portion 25 of the terminal 22, and the one end portion of the insulating member 34 is placed in the insulating member caulking portion 26 of the terminal 22. It arrange | positions, and it crimps | bonds the conductor connection part 25 of the terminal 22 to the core wire exposed part 32a, and crimps | bonds the insulating member crimp part 26 to the edge part of the insulating member 34. FIG. Thereby, the terminal 22 is connected to the edge part of the one side of the relay connection part 30B (process (a)).

そして、図6に示すように、芯線露出部32Bbの先端部をプレス型100、102によりプレスして偏平端部32b1を形成し、もって、芯線露出部32bを形成する(工程(b))。なお、本工程(b)は、上記工程(a)の前に行われてもよい。   And as shown in FIG. 6, the front-end | tip part of core wire exposed part 32Bb is pressed with the press type | molds 100 and 102, the flat end part 32b1 is formed, and, thereby, the core wire exposed part 32b is formed (process (b)). In addition, this process (b) may be performed before the said process (a).

そして、上記工程(a)及び工程(b)の後、図7に示すように、偏平端部32b1に電線40の芯線露出部42aを接続する(工程(c))。本接続を超音波溶接によって行う場合、例えば、偏平端部32b1をアンビル110上に載置し、この上に芯線露出部42aを配設し、その上に超音波振動付与用のチップ112を押付け、もって、アンビル110とチップ112との間で、偏平端部32b1と芯線露出部42aとの積層物を挟み込むとよい。抵抗溶接等を行う場合にも同様に行うことができる。   And after the said process (a) and process (b), as shown in FIG. 7, the core wire exposed part 42a of the electric wire 40 is connected to the flat end part 32b1 (process (c)). When this connection is performed by ultrasonic welding, for example, the flat end portion 32b1 is placed on the anvil 110, the core wire exposed portion 42a is disposed thereon, and the tip 112 for imparting ultrasonic vibration is pressed thereon. Thus, a laminate of the flat end portion 32b1 and the core wire exposed portion 42a may be sandwiched between the anvil 110 and the tip 112. The same can be done for resistance welding or the like.

この後、図8に示すように、偏平端部32b1と芯線露出部42aとの接続部分を封止部50で覆う(工程(d))。ここでは、偏平端部32b1と芯線露出部42aとの接続部分を、端子22側から、熱収縮前の熱収縮チューブ58に挿入する。なお、熱収縮チューブ58の内側には、ホットメルト等の熱可塑性接着剤59が塗布等によって配設されている。そして、熱収縮チューブ58を加熱装置120によって加熱する。すると、熱収縮チューブ58が熱収縮すると共に、熱可塑性接着剤59が軟化して、熱収縮チューブ58と偏平端部32b1及び芯線露出部42aの接続部分との間の隙間を埋める。これにより、封止部50が形成される。   Then, as shown in FIG. 8, the connection part of the flat end part 32b1 and the core wire exposed part 42a is covered with the sealing part 50 (process (d)). Here, the connecting portion between the flat end portion 32b1 and the core wire exposed portion 42a is inserted into the heat shrinkable tube 58 before heat shrinkage from the terminal 22 side. Note that a thermoplastic adhesive 59 such as hot melt is disposed inside the heat shrinkable tube 58 by application or the like. Then, the heat shrinkable tube 58 is heated by the heating device 120. Then, the heat-shrinkable tube 58 is heat-shrinked, and the thermoplastic adhesive 59 is softened to fill a gap between the heat-shrinkable tube 58 and the connection portion between the flat end portion 32b1 and the core wire exposed portion 42a. Thereby, the sealing part 50 is formed.

上記を前提にして、複数種類の端子付電線20を製造する場合には、図9に示すように、するとよい。   On the premise of the above, when manufacturing a plurality of types of terminal-attached electric wires 20, as shown in FIG.

まず、上記工程(a)及び工程(b)を繰返すことで、端子22に中継接続部30が接続された同形状の中間製造物90を複数製造する(図9の左側参照)。工程(a)及び工程(b)は、同種の端子22及び同種の中継接続部30(30B)を用いた工程である。このため、同じ加工装置を用いて効率的に多数の中間製造物90を製造できる。   First, by repeating the steps (a) and (b), a plurality of intermediate products 90 having the same shape in which the relay connection portion 30 is connected to the terminal 22 are manufactured (see the left side of FIG. 9). Step (a) and step (b) are steps using the same type of terminal 22 and the same type of relay connection 30 (30B). For this reason, many intermediate products 90 can be efficiently manufactured using the same processing apparatus.

この後、電線40の種類を途中で変更して、上記工程(c)を複数回実施する。ここで、電線40の種類とは、例えば,電線40の外径(芯線42の外径、又は、被覆部44の外径)によって区別される。上記共通する一種類の中間製造物90に対してある外径の電線40(便宜上、電線40Xとする)を接続する。かかる電線40Xを含む端子付電線20を複数製造する。そして、中間製造物90が残っている途中で、電線40Xを他の外径の電線40(便宜上電線40Yとする)に変更する。そして、かかる電線40Yを含む端子付電線20を複数製造する。   Then, the kind of electric wire 40 is changed on the way, and the said process (c) is implemented in multiple times. Here, the type of the electric wire 40 is distinguished by, for example, the outer diameter of the electric wire 40 (the outer diameter of the core wire 42 or the outer diameter of the covering portion 44). An outer diameter electric wire 40 (referred to as an electric wire 40X for convenience) is connected to the common intermediate product 90 described above. A plurality of terminal-attached electric wires 20 including such electric wires 40X are manufactured. Then, while the intermediate product 90 remains, the electric wire 40X is changed to another outer diameter electric wire 40 (referred to as an electric wire 40Y for convenience). And the electric wire 20 with a terminal containing this electric wire 40Y is manufactured in multiple numbers.

このように、工程(a)及び工程(b)を繰返すことで、端子22に中継接続部30が接続された同形状の中間製造物90を効率よく複数製造できる。そして、電線40の種類を途中で変更して(例えば、電線40Xから電線40Yに変更)、工程(b)を複数回実施することで、同形状の中間製造物90に対して異なる種類の電線40X、40Yを接続した複数種類の端子付電線20を効率よく製造できる。   As described above, by repeating the steps (a) and (b), a plurality of intermediate products 90 having the same shape in which the relay connecting portion 30 is connected to the terminal 22 can be efficiently manufactured. And the kind of electric wire 40 is changed in the middle (for example, it changed from the electric wire 40X to the electric wire 40Y), and a different kind of electric wire is compared with respect to the intermediate product 90 of the same shape by implementing a process (b) several times. A plurality of types of terminal-attached electric wires 20 connected to 40X and 40Y can be efficiently manufactured.

しかも、端子22を中継接続部30に接続するにあたって、端子22の種類(大きさ等)が変更されると、圧着金型等の変更が必要となるが、本実施形態では、同種の端子22に、同種の中継接続部30を連続的に圧着等していくため、圧着金型等の変更は不要であり、効率的に多数の中間製造物90を製造できる。一方、偏平端部32b1と芯線露出部42aとの接続は、汎用的な接合装置(例えば、超音波溶接用のホーンとチップ等)を使うことができるため、その製造を効率よく実施できる。   Moreover, when the type (size, etc.) of the terminal 22 is changed when the terminal 22 is connected to the relay connection portion 30, the crimping die or the like needs to be changed. In this embodiment, the same type of terminal 22 is used. In addition, since the same type of relay connection portion 30 is continuously crimped, it is not necessary to change the crimping die or the like, and a large number of intermediate products 90 can be efficiently manufactured. On the other hand, the connection between the flat end portion 32b1 and the core wire exposed portion 42a can be performed efficiently since a general-purpose joining device (for example, a horn and a tip for ultrasonic welding) can be used.

もっとも、ある端子付電線20を製造するにあたって、上記工程(a)、工程(b)、工程(c)、工程(d)が上記順で実施されることは必須ではなく、例えば、工程(c)、工程(d)が、工程(a)、工程(b)の前になされてもよい。   However, in manufacturing a certain terminal-attached electric wire 20, it is not essential that the step (a), the step (b), the step (c), and the step (d) are performed in the order described above. For example, the step (c ) And step (d) may be performed before step (a) and step (b).

<変形例>
変形例に係る端子付電線220について説明する。本変形例の説明にあたって、上記実施形態で説明したものと同様構成要素については、同一符号を付して説明を省略することがある。
<Modification>
The electric wire 220 with a terminal which concerns on a modification is demonstrated. In the description of this modification, the same components as those described in the above embodiment may be denoted by the same reference numerals and description thereof may be omitted.

図10は変形例に係る端子付電線220を示す側面図であり、図11は図10において封止部250内の構造を示す説明図である。図10においては、端子22がコネクタ端子であることを前提に、コネクタハウジング10内に収容された状態を示している。   10 is a side view showing a terminal-attached electric wire 220 according to a modification, and FIG. 11 is an explanatory view showing the structure inside the sealing portion 250 in FIG. FIG. 10 shows a state where the terminal 22 is accommodated in the connector housing 10 on the assumption that the terminal 22 is a connector terminal.

この端子付電線220は、端子22と、中継接続部230と、電線40と、封止部250とを備える。   This terminal-attached electric wire 220 includes a terminal 22, a relay connection part 230, an electric wire 40, and a sealing part 250.

端子22及び電線40は、上記実施形態で説明したものと同様構成である。   The terminal 22 and the electric wire 40 have the same configuration as that described in the above embodiment.

中継接続部230は、端子22と同種金属により形成された長尺部材であり、一端部が端子22に接続され、他端部が偏平な偏平端部232bに形成された中継導体232を含む。上記実施形態とは異なり、中継導体232には樹脂が押出被覆等されていない。従って、封止部250を形成する前の状態では、中継導体232は裸導体である。   The relay connection part 230 is a long member formed of the same metal as the terminal 22, and includes a relay conductor 232 having one end connected to the terminal 22 and the other end formed on a flat end 232 b that is flat. Unlike the above embodiment, the relay conductor 232 is not extrusion-coated with resin. Therefore, the relay conductor 232 is a bare conductor before the sealing portion 250 is formed.

端子22が銅又は銅合金によって形成されている場合、中継導体232は、銅又は銅合金により形成された長尺部材である。中継導体232は、横断面円形状の丸棒状導体の一端部をプレス成型等して偏平端部232bに加工することにより製造される。このため、中継導体232を観察すると、中継導体232は、上記実施形態で説明した芯線32と同様構成である。   When the terminal 22 is formed of copper or a copper alloy, the relay conductor 232 is a long member formed of copper or a copper alloy. The relay conductor 232 is manufactured by processing one end of a round bar-shaped conductor having a circular cross section into a flat end 232b by press molding or the like. For this reason, when the relay conductor 232 is observed, the relay conductor 232 has the same configuration as the core wire 32 described in the above embodiment.

この中継導体232の一端部は、上記実施形態と同様に、端子22の導体接続部25に接続されている。また、中継導体232の他端部の偏平端部232bは、上記実施形態と同様に、電線40の芯線露出部42aに接続されている。   One end portion of the relay conductor 232 is connected to the conductor connection portion 25 of the terminal 22 as in the above embodiment. Further, the flat end 232b at the other end of the relay conductor 232 is connected to the core wire exposed portion 42a of the electric wire 40 in the same manner as in the above embodiment.

封止部250は、偏平端部232bと芯線露出部42aとの接続部分を覆っている。この封止部250は、上記実施形態と同様に、熱収縮チューブ258によって構成される。   The sealing portion 250 covers a connection portion between the flat end portion 232b and the core wire exposed portion 42a. The sealing portion 250 is configured by a heat shrinkable tube 258 as in the above embodiment.

封止部250は、少なくとも偏平端部232bと芯線露出部42aとの接続部分を覆っていればよい。ここでは、封止部250は、端子22がコネクタハウジング10のキャビティ12内に保持された状態で、中継導体232のうち少なくともキャビティ12の開口手前迄の部分を覆う。中継導体232のうちキャビティ12の開口手前迄の部分とは、隣合うキャビティ12に保持された端子22から延出する中継導体232同士が接触する可能性のある部分を意味する。例えば、キャビティ12の開口から2mm程度離れた位置で封止部250が中継導体232を覆っていても、キャビティ12間の間隔によっては、隣合う中継導体232同士の接触が回避されていることはあり得る。中継導体232の柔軟性、キャビティ12間の距離に応じて、封止部250が中継導体232を覆うべき領域は異なる。もっとも、封止部250は、中継導体232のうちキャビティ12の開口内に入り込むまでの部分を覆っていることが好ましい。これにより、中継導体232が裸導体である場合においても、封止部250によって、隣合う中継導体232間を絶縁することができる。   The sealing part 250 should just cover the connection part of the flat end part 232b and the core wire exposed part 42a at least. Here, the sealing portion 250 covers at least a portion of the relay conductor 232 up to the opening of the cavity 12 in a state where the terminal 22 is held in the cavity 12 of the connector housing 10. The portion of the relay conductor 232 up to the opening of the cavity 12 means a portion where the relay conductors 232 extending from the terminals 22 held in the adjacent cavities 12 may come into contact with each other. For example, even if the sealing portion 250 covers the relay conductor 232 at a position about 2 mm away from the opening of the cavity 12, contact between adjacent relay conductors 232 is avoided depending on the interval between the cavities 12. possible. Depending on the flexibility of the relay conductor 232 and the distance between the cavities 12, the region where the sealing portion 250 should cover the relay conductor 232 differs. However, it is preferable that the sealing portion 250 covers a portion of the relay conductor 232 until it enters the opening of the cavity 12. Thereby, even when the relay conductor 232 is a bare conductor, the adjacent relay conductors 232 can be insulated by the sealing portion 250.

さらに好ましくは、封止部250は、中継導体232のうち絶縁部材かしめ部26に至る部分までを覆う。これにより、絶縁部材かしめ部26を、中継導体232を覆う封止部250の端部にかしめることができ、中継導体232が裸導体である場合においても、端子22として一般的な電線用のものを利用し易いという利点がある。   More preferably, the sealing portion 250 covers up to a portion reaching the insulating member caulking portion 26 in the relay conductor 232. As a result, the caulking portion 26 of the insulating member can be caulked to the end of the sealing portion 250 that covers the relay conductor 232. Even when the relay conductor 232 is a bare conductor, the terminal 22 can be used for a general electric wire. There is an advantage that things are easy to use.

上記封止部250は、芯線露出部42aの先端側でも中継導体232を覆う一形態を示している。また、中継導体232の延在方向中間部は断面円形状であるため、封止部250が中継導体232の円形部分を覆う一形態をも示している。   The sealing portion 250 has a form that covers the relay conductor 232 also on the distal end side of the core wire exposed portion 42a. Further, since the intermediate portion in the extending direction of the relay conductor 232 has a circular cross section, the sealing portion 250 also shows a form in which the circular portion of the relay conductor 232 is covered.

この変形例によっても、中継接続部として単芯電線を用いることによる作用効果を除き、上記実施形態と同様の作用効果を得ることができる。   Also by this modification, the same effect as the said embodiment can be acquired except the effect by using a single core electric wire as a relay connection part.

本変形例に係る端子付電線220の製造方法例について説明する。   An example of a method for manufacturing the electric wire with terminal 220 according to this modification will be described.

まず、図12に示すように、中継導体232を準備し、その偏平端部232bに電線40の芯線露出部42aを接続する。   First, as shown in FIG. 12, the relay conductor 232 is prepared, and the core wire exposed portion 42a of the electric wire 40 is connected to the flat end portion 232b.

次に、図13に示すように、熱収縮前の熱収縮チューブ258に、偏平端部232bと芯線露出部42aとの接続部分を挿入し、加熱装置320によって熱収縮チューブ258を加熱し、熱収縮チューブ258を熱収縮させる。これにより、熱収縮した熱収縮チューブ258が偏平端部232bと芯線露出部42aとの接続部分を覆う。この際、熱収縮した熱収縮チューブ258が中継導体232のうち端子22の導体接続部25が接続される部分以外を覆うようにする。なお、熱収縮チューブ258内側の熱可塑性接着剤259は、熱収縮した熱収縮チューブ258と偏平端部232b及び芯線露出部42aの接続部さらにその周辺部分との間に充填される。これにより、封止部250が形成される。   Next, as shown in FIG. 13, the connecting portion between the flat end 232b and the core wire exposed portion 42a is inserted into the heat-shrinkable tube 258 before heat-shrinking, and the heat-shrinkable tube 258 is heated by the heating device 320. The shrink tube 258 is heat shrunk. Thus, the heat-shrinkable tube 258 that has been heat-shrinked covers the connection portion between the flat end 232b and the core wire exposed portion 42a. At this time, the heat-shrinkable tube 258 that has been heat-shrinked covers the relay conductor 232 other than the portion to which the conductor connecting portion 25 of the terminal 22 is connected. The thermoplastic adhesive 259 inside the heat-shrinkable tube 258 is filled between the heat-shrinkable heat-shrinkable tube 258, the connection portion of the flat end portion 232b and the core wire exposed portion 42a, and the peripheral portion thereof. Thereby, the sealing part 250 is formed.

そして、図14に示すように、中継導体232の一方側の端部(封止部250から露出する端部)を端子22の導体接続部25内に配設すると共に、封止部250の端部を絶縁部材かしめ部26内に配設し、端子22の導体接続部25を中継導体232の一方側の端部に接続すると共に、絶縁部材かしめ部26を封止部250の端部にかしめ固定する。これにより、端子付電線220が製造される。   Then, as shown in FIG. 14, one end of the relay conductor 232 (end exposed from the sealing portion 250) is disposed in the conductor connection portion 25 of the terminal 22, and the end of the sealing portion 250 is arranged. Are disposed in the insulating member caulking portion 26, the conductor connecting portion 25 of the terminal 22 is connected to one end of the relay conductor 232, and the insulating member caulking portion 26 is caulked to the end of the sealing portion 250. Fix it. Thereby, the electric wire 220 with a terminal is manufactured.

なお、上記実施形態及び各変形例で説明した各構成は、相互に矛盾しない限り適宜組合わせることができる。   In addition, each structure demonstrated in the said embodiment and each modification can be suitably combined unless it mutually contradicts.

以上のようにこの発明は詳細に説明されたが、上記した説明は、すべての局面において、例示であって、この発明がそれに限定されるものではない。例示されていない無数の変形例が、この発明の範囲から外れることなく想定され得るものと解される。   As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

10 コネクタハウジング
12 キャビティ
20、220 端子付電線
22 端子
25 導体接続部
26 絶縁部材かしめ部26
30、230 中継接続部
32 芯線
32a、32b 芯線露出部
32b1、232b 偏平端部
32c 円形部分
34 絶縁部材
34c 円形部分
40、40X、40Y 電線
42 芯線
42a 芯線露出部
44 被覆部
50、250 封止部
58、258 熱収縮チューブ
90 中間製造物
232 中継導体
DESCRIPTION OF SYMBOLS 10 Connector housing 12 Cavity 20,220 Electric wire with a terminal 22 Terminal 25 Conductor connection part 26 Insulation member crimping part 26
30, 230 Relay connection part 32 Core wire 32a, 32b Core wire exposed part 32b1, 232b Flat end part 32c Circular part 34 Insulating member 34c Circular part 40, 40X, 40Y Electric wire 42 Core wire 42a Core wire exposed part 44 Covering part 50, 250 Sealing part 58,258 Heat shrinkable tube 90 Intermediate product 232 Relay conductor

Claims (9)

端子と、
前記端子と同種金属により形成された長尺部材であり、一端部が前記端子に接続され、他端部が偏平な偏平端部に形成された中継導体を含む中継接続部と、
前記端子とは異種金属により形成された芯線と前記芯線を覆う被覆部とを含み、前記芯線の一端部が前記被覆部から露出する芯線露出部に形成されると共に、前記芯線露出部が前記偏平端部に接続された電線と、
前記偏平端部と前記芯線露出部との接続部分を覆う封止部と、
を備える端子付電線。
A terminal,
A relay member formed of a metal similar to the terminal and including a relay conductor having one end connected to the terminal and the other end formed into a flat flat end;
The terminal includes a core wire formed of a dissimilar metal and a covering portion covering the core wire, and one end portion of the core wire is formed in a core wire exposed portion exposed from the covering portion, and the core wire exposed portion is the flattened portion. An electric wire connected to the end,
A sealing portion covering a connection portion between the flat end portion and the core wire exposed portion;
An electric wire with a terminal.
請求項1に記載の端子付電線であって、
前記端子は、銅又は銅合金により形成され、
前記中継導体は、銅又は銅合金により形成され、
前記芯線は、アルミニウム又はアルミニウム合金により形成されている、端子付電線。
It is an electric wire with a terminal according to claim 1,
The terminal is formed of copper or a copper alloy,
The relay conductor is formed of copper or a copper alloy,
The said core wire is an electric wire with a terminal currently formed with aluminum or aluminum alloy.
請求項1又は請求項2に記載の端子付電線であって、
前記封止部は、前記偏平端部と前記芯線露出部との接続部分を覆った状態で熱収縮した熱収縮チューブである、端子付電線。
It is an electric wire with a terminal according to claim 1 or claim 2,
The said sealing part is an electric wire with a terminal which is a heat contraction tube which thermally contracted in the state which covered the connection part of the said flat end part and the said core wire exposed part.
請求項1〜請求項3のいずれか1項に記載の端子付電線であって、
前記封止部は、前記芯線露出部の先端側でも前記中継導体を覆っている、端子付電線。
It is an electric wire with a terminal given in any 1 paragraph of Claims 1-3,
The sealing portion is a terminal-attached electric wire that covers the relay conductor also on the distal end side of the core wire exposed portion.
請求項1〜請求項4のいずれか1項に記載の端子付電線であって、
前記中継接続部は、その延在方向中間部において断面の外形が円形状を呈する円形部分を含み、
前記封止部は、前記円形部分を覆っている、端子付電線。
It is an electric wire with a terminal given in any 1 paragraph of Claims 1-4,
The relay connection portion includes a circular portion having a circular outer shape in cross section at an intermediate portion in the extending direction,
The said sealing part is an electric wire with a terminal which has covered the said circular part.
請求項1〜請求項5のいずれか1項に記載の端子付電線であって、
前記中継接続部は、前記芯線の延在方向中間部を覆う被覆部を含む単芯電線である、端子付電線。
It is an electric wire with a terminal given in any 1 paragraph of Claims 1-5,
The said relay connection part is an electric wire with a terminal which is a single core electric wire containing the coating | coated part which covers the extension direction intermediate part of the said core wire.
請求項1〜請求項6のいずれか1項に記載の端子付電線であって、
前記端子は、コネクタハウジングのキャビティに保持されるコネクタ用端子であり、
前記封止部は、前記コネクタ用端子が前記キャビティ内に保持された状態で、前記中継導体のうち少なくとも前記キャビティの開口手前迄の部分を覆う、端子付電線。
It is an electric wire with a terminal given in any 1 paragraph of Claims 1-6,
The terminal is a connector terminal held in the cavity of the connector housing,
The sealing portion is an electric wire with a terminal that covers at least a portion of the relay conductor up to the opening of the cavity in a state where the connector terminal is held in the cavity.
請求項1〜請求項7のいずれか1項に記載の端子付電線であって、
前記端子は、絶縁部材かしめ部を含み、
前記封止部は、前記中継導体のうち前記絶縁部材かしめ部に至る部分までを覆っており、
前記絶縁部材かしめ部は、前記封止部の端部にかしめ固定されている、端子付電線。
It is an electric wire with a terminal given in any 1 paragraph of Claims 1-7,
The terminal includes an insulating member caulking portion,
The sealing portion covers up to a portion reaching the insulating member caulking portion of the relay conductor,
The said insulation member crimping part is an electric wire with a terminal currently crimped and fixed to the edge part of the said sealing part.
(a)端子と、前記端子と同種金属により形成された長尺状の中継導体の一端部とを接続する工程と、
(b)前記中継導体の他端部を、偏平な偏平端部に加工する工程と、
(c)前記工程(a)及び工程(b)の後、前記偏平端部に、電線の端部の芯線露出部を接続する工程と、
(d)前記偏平端部と前記芯線露出部との接続部分を封止部で覆う工程と、
を備え、
前記工程(a)及び前記工程(b)を繰返すことで、前記端子に前記中継導体が接続された同形状の中間製造物を複数製造し、
前記電線の種類を途中で変更して、前記工程(b)を複数回実施する、端子付電線の製造方法。
(a) connecting the terminal and one end of a long relay conductor formed of the same metal as the terminal;
(b) processing the other end of the relay conductor into a flat flat end;
(c) after the step (a) and the step (b), connecting the core wire exposed portion of the end portion of the electric wire to the flat end portion; and
(d) a step of covering a connecting portion between the flat end portion and the core wire exposed portion with a sealing portion;
With
By repeating the step (a) and the step (b), a plurality of intermediate products having the same shape in which the relay conductor is connected to the terminal are manufactured,
A method for manufacturing a terminal-attached electric wire, wherein the type of the electric wire is changed halfway, and the step (b) is performed a plurality of times.
JP2015211516A 2015-10-28 2015-10-28 Wire with terminal and manufacturing method of wire with terminal Pending JP2017084600A (en)

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Publication number Priority date Publication date Assignee Title
JP2020068176A (en) * 2018-10-26 2020-04-30 矢崎総業株式会社 Ultrasonic connection structure and ultrasonic connection method
CN111564706A (en) * 2019-02-14 2020-08-21 住友电装株式会社 Ground terminal and wire harness
JP2020135964A (en) * 2019-02-14 2020-08-31 住友電装株式会社 Earth terminal and wire harness
JP2020135963A (en) * 2019-02-14 2020-08-31 住友電装株式会社 Earth terminal and wire harness
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