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JP6168417B2 - Manufacturing method of electric wires with terminal fittings - Google Patents

Manufacturing method of electric wires with terminal fittings Download PDF

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Publication number
JP6168417B2
JP6168417B2 JP2014128034A JP2014128034A JP6168417B2 JP 6168417 B2 JP6168417 B2 JP 6168417B2 JP 2014128034 A JP2014128034 A JP 2014128034A JP 2014128034 A JP2014128034 A JP 2014128034A JP 6168417 B2 JP6168417 B2 JP 6168417B2
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Prior art keywords
terminal
wire barrel
wire
electric wire
crimped
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JP2016009540A (en
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康雄 大森
康雄 大森
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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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Description

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

従来、電線の端末部に圧着される端子金具は、電線の端末部において露出された芯線に加締め付けられるワイヤバレル部を備えている。そして、何らかの理由により、ワイヤバレル部が、端子金具の他の部分に重なった形態で備えられる場合がある。例えば、下記特許文献1に記載の端子金具は、車体の所定箇所にボルト締めにより取り付けられるアース用の端子金具であり、ワイヤバレル部は、ボルト用の接続孔を有する端子本体部の上面に重なった形態で備えられている。このような形態とすることで、電線に引っ張り力が作用した場合に、ワイヤバレル部が端子本体部から分離しやすくなり、もって、廃棄車両の解体時に電線を容易に回収することができる。   2. Description of the Related Art Conventionally, a terminal fitting that is crimped to an end portion of an electric wire includes a wire barrel portion that is crimped to a core wire exposed at the end portion of the electric wire. Then, for some reason, the wire barrel portion may be provided in a form overlapping with other portions of the terminal fitting. For example, the terminal fitting described in Patent Document 1 below is a grounding terminal fitting that is attached to a predetermined portion of the vehicle body by bolting, and the wire barrel portion overlaps the upper surface of the terminal main body portion having a bolt connection hole. Provided in different forms. By setting it as such a form, when a tensile force acts on an electric wire, it becomes easy to isolate | separate a wire barrel part from a terminal main-body part, Therefore, an electric wire can be easily collect | recovered at the time of dismantling of a disposal vehicle.

特開2013−134846号公報JP 2013-134844 A

ところで、端子金具を電線の端末部に圧着加工した時には、ワイヤバレル部の高さ寸法(クリンプハイト)を測定して圧着状態を確認することが重要である。ワイヤバレル部のクリンプハイトが低い場合には、芯線が過剰に締め付けられて切れている虞があり、クリンプハイトが高い場合には、端子金具と芯線の固着が不十分で端子金具が簡単に離脱してしまう虞があるからである。   By the way, when the terminal fitting is crimped to the terminal portion of the electric wire, it is important to check the crimped state by measuring the height dimension (crimp height) of the wire barrel portion. If the crimp height of the wire barrel is low, the core wire may be excessively tightened and cut, and if the crimp height is high, the terminal metal and core wire are not firmly fixed and the terminal metal is easily detached. It is because there is a possibility of doing.

しかしながら、上記のようにワイヤバレル部が板部材の上面に重なった形態で備えられている場合には、正確なクリンプハイトを測定することが難しいという問題がある。なぜなら、このような端子金具においては、クリンプハイトの基準となるワイヤバレル部の下面に板部材が重ねられているためクリンプハイトを直接測定することができないからである。すなわち、このような端子金具においては、板部材を含んだ高さ寸法を測定し、そこから板部材の厚さ寸法を差し引くことで、ワイヤバレル部のクリンプハイトを算出することになる。ところがこのような方法では、ワイヤバレル部と板部材との間に隙間があったとしてもそれを考慮することができず、またワイヤバレル部の製造公差のみならず板部材の製造公差が余計に加わってしまうからである。   However, when the wire barrel portion is provided so as to overlap the upper surface of the plate member as described above, there is a problem that it is difficult to measure an accurate crimp height. This is because, in such a terminal fitting, the plate height cannot be directly measured because the plate member is overlaid on the lower surface of the wire barrel portion that serves as a reference for the crimp height. That is, in such a terminal fitting, the crimp height of the wire barrel portion is calculated by measuring the height dimension including the plate member and subtracting the thickness dimension of the plate member therefrom. However, in such a method, even if there is a gap between the wire barrel portion and the plate member, it cannot be considered, and not only the manufacturing tolerance of the wire barrel portion but also the manufacturing tolerance of the plate member is excessive. Because it will join.

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、ワイヤバレル部のクリンプハイトを精度よく測定することが可能な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。 This invention is completed based on the above situations, Comprising: It aims at providing the manufacturing method of the electric wire with a terminal metal fitting which can measure the crimp height of a wire barrel part accurately.

本発明は、電線の端末部に端子金具が圧着された端子金具付き電線の製造方法であり、前記端子金具が、前記電線の導体に加締め付けられるワイヤバレル部と、前記ワイヤバレル部のうちクリンプハイトの基準となる部分を露出させる窓部を有して前記ワイヤバレル部の下側に重ねて配される下板部と、を有し、前記窓部を介して圧着後の前記ワイヤバレル部のクリンプハイトを直接測定する工程を経る方法である。
The present invention is a method for manufacturing an electric wire with a terminal metal fitting in which a terminal metal fitting is crimped to a terminal portion of the electric wire , wherein the terminal metal fitting is crimped to a conductor of the electric wire, and a crimp of the wire barrel part a window for exposing the portion to be the height of the reference have a, a lower plate portion which is disposed to overlap the lower side of the wire barrel portion, the wire barrel portion after the crimping through the window This is a method through a step of directly measuring the crimp height.

本発明によれば、窓部を介してワイヤバレル部のクリンプハイトを直接測定することができるから、ワイヤバレル部のクリンプハイトを精度良く測定することができる。   According to the present invention, since the crimp height of the wire barrel portion can be directly measured through the window portion, the crimp height of the wire barrel portion can be accurately measured.

本実施例における端子金具を表す斜視図The perspective view showing the terminal metal fitting in a present Example 端子金具を表す平面図Plan view showing terminal fittings 電線に圧着された状態の端子金具を表す斜視図A perspective view showing a terminal fitting in a state of being crimped to an electric wire 電線に圧着された状態の端子金具を表す底面図Bottom view showing terminal fittings crimped to wires ワイヤバレル部のクリンプハイトを測定する様子を示す一部拡大概念図Partially enlarged conceptual diagram showing how to measure the crimp height of the wire barrel

本発明の好ましい形態を以下に示す。
本発明の端子金具は、前記窓部が、前記基準となる部分の真下に形成された貫通穴であるものとしてもよい。このような構成によれば、端子金具の下板部の開口部分を最小限にすることができるから、開口部を設けることによる端子金具の強度の低下を抑えることができる。
Preferred embodiments of the present invention are shown below.
In the terminal fitting of the present invention, the window portion may be a through hole formed immediately below the reference portion. According to such a structure, since the opening part of the lower board part of a terminal metal fitting can be minimized, the fall of the intensity | strength of a terminal metal fitting by providing an opening part can be suppressed.

<実施例1>
以下、本発明を具体化した一実施例について、図1〜図5を参照しつつ詳細に説明する。
本実施例における端子金具10は、電線30の端末部に圧着されて車両のアース部に取り付けられるアース用の端子金具である。電線30は、導体31を絶縁被覆32で包囲してなるものであり、端子金具10が固着される端末部においては、絶縁被覆32が除去されて導体31が外部に露出されている。導体31は、銅製、またはアルミニウム製とされている。
<Example 1>
Hereinafter, an embodiment embodying the present invention will be described in detail with reference to FIGS.
The terminal fitting 10 in the present embodiment is a grounding terminal fitting that is crimped to the terminal portion of the electric wire 30 and attached to the ground portion of the vehicle. The electric wire 30 is formed by surrounding a conductor 31 with an insulating coating 32. At the terminal portion to which the terminal fitting 10 is fixed, the insulating coating 32 is removed and the conductor 31 is exposed to the outside. The conductor 31 is made of copper or aluminum.

端子金具10は、所定形状に打ち抜いた導電性の金属板材を曲げ加工して形成され、車両のアース部に接続されるアース側接続部11と、電線30に接続される電線側接続部12とを備えている。   The terminal fitting 10 is formed by bending a conductive metal plate material punched into a predetermined shape, and is connected to an earth side connection portion 11 connected to a vehicle earth portion, and an electric wire side connection portion 12 connected to an electric wire 30. It has.

アース側接続部11には、アース部にアース側接続部11をボルト締めするための接続穴13が設けられている。また、アース側接続部11には、この端子金具10と、図示しない他の端子金具とを組み付け状態に保持するための係合部14が備えられている。係合部14は、接続穴13の左右両側に設けられ、この端子金具10と他の端子金具とは、互いの接続穴13が上下に連通するように重ね合わされて組み付けられる。なお、端子金具10の前端部には、アース部の壁面に形成された穴に嵌合して端子金具10の回転を防ぐ回り止め用の舌片15が形成されている。   The ground side connection part 11 is provided with a connection hole 13 for bolting the ground side connection part 11 to the ground part. The ground side connecting portion 11 is provided with an engaging portion 14 for holding the terminal fitting 10 and another terminal fitting (not shown) in an assembled state. The engaging portions 14 are provided on both the left and right sides of the connection hole 13, and the terminal fitting 10 and other terminal fittings are overlapped and assembled so that the connection holes 13 communicate with each other vertically. A non-rotating tongue 15 is formed at the front end portion of the terminal fitting 10 to prevent rotation of the terminal fitting 10 by fitting into a hole formed in the wall surface of the ground portion.

電線側接続部12は、アース側接続部11の後側に設けられており、電線30の導体31に加締め付けられるワイヤバレル部16と、電線30の絶縁被覆32に加締め付けられるインシュレーションバレル部17とを備えている。   The electric wire side connection portion 12 is provided on the rear side of the ground side connection portion 11, and a wire barrel portion 16 that is crimped to the conductor 31 of the electric wire 30 and an insulation barrel portion that is crimped to the insulating coating 32 of the electric wire 30. 17.

インシュレーションバレル部17は、アース側接続部11の後端から後方に延びて設けられた基部18の後端部に一体に設けられている。基部18は、幅方向(左右方向)の略中心が最も下側に位置するように緩く湾曲した断面形状をなしている。インシュレーションバレル部17は、基部18の左右両側縁から上方に立ち上がる一対のカシメ片17Aを有し、その一対のカシメ片17Aを、絶縁被覆32の端部の外周面に巻き付けるようにして圧着される(図3参照)。   The insulation barrel portion 17 is integrally provided at the rear end portion of the base portion 18 provided to extend rearward from the rear end of the ground side connection portion 11. The base portion 18 has a cross-sectional shape that is gently curved so that the approximate center in the width direction (left-right direction) is located on the lowest side. The insulation barrel portion 17 has a pair of caulking pieces 17A rising upward from the left and right side edges of the base portion 18 and is crimped so that the pair of caulking pieces 17A is wound around the outer peripheral surface of the end portion of the insulating coating 32. (See FIG. 3).

ワイヤバレル部16は、図1に示すように、基部18の上面側に載置されて備えられている。ワイヤバレル部16は、基部18の上面に重ねて配される上板部19と、上板部19の左右両側縁から上方に立ち上がる一対のカシメ片16Aとを有している。上板部19は、幅方向(左右方向)の略中心が最も下側に位置するように緩く湾曲した断面形状をなしている。なお、上板部19の湾曲は、基部18の湾曲よりも若干きつくされている。   As shown in FIG. 1, the wire barrel portion 16 is mounted on the upper surface side of the base portion 18. The wire barrel portion 16 includes an upper plate portion 19 that is disposed so as to overlap the upper surface of the base portion 18, and a pair of crimping pieces 16 </ b> A that rise upward from left and right side edges of the upper plate portion 19. The upper plate portion 19 has a cross-sectional shape that is gently curved so that the approximate center in the width direction (left-right direction) is located on the lowermost side. The curvature of the upper plate portion 19 is slightly tighter than the curvature of the base portion 18.

ワイヤバレル部16の圧着面には、上板部19から両カシメ片16Aにかけて左右方向(導体31の軸方向と略直交する方向)に延びる複数本の溝部が、前後方向(導体31の軸方向)に所定の間隔をあけて形成されたセレーション21が設けられている。ワイヤバレル部16は、一対のカシメ片16Aが導体31を内側に巻き込むようにして圧着される(図5参照)。圧着後のワイヤバレル部16の両カシメ片16Aの先端部は導体31の内部に埋め込まれ、上面側には2つの湾曲部が幅方向に並んで形成される。   A plurality of groove portions extending in the left-right direction (a direction substantially orthogonal to the axial direction of the conductor 31) from the upper plate portion 19 to both the crimping pieces 16A are formed on the crimping surface of the wire barrel portion 16 in the front-rear direction (the axial direction of the conductor 31). ) Is provided with a serration 21 formed at a predetermined interval. The wire barrel portion 16 is crimped so that the pair of caulking pieces 16A wind the conductor 31 inside (see FIG. 5). The tip portions of both crimped pieces 16A of the wire barrel portion 16 after crimping are embedded in the conductor 31, and two curved portions are formed side by side in the width direction on the upper surface side.

ワイヤバレル部16は、図2に示すように、連結部22を介して基部18に連結されている。連結部22は、基部18の左右両側縁のうち一方の縁から他方の縁に向かって延び、ワイヤバレル部16の上板部19の前縁に繋がっている。連結部22の幅寸法(延び方向と略直交する方向の寸法)は、基部18の幅寸法よりも小さくされている。   As shown in FIG. 2, the wire barrel portion 16 is connected to the base portion 18 via a connecting portion 22. The connecting portion 22 extends from one of the left and right side edges of the base portion 18 toward the other edge, and is connected to the front edge of the upper plate portion 19 of the wire barrel portion 16. The width dimension of the connecting portion 22 (the dimension in a direction substantially perpendicular to the extending direction) is smaller than the width dimension of the base portion 18.

連結部22は、押え部23によって基部18に押さえ付けられている。押え部23は、基部18の左右両側縁のうち連結部22が設けられた側とは反対側の縁に設けられ、連結部22の上面側に屈曲して連結部22の角部を押えている。   The connecting portion 22 is pressed against the base portion 18 by the presser portion 23. The presser portion 23 is provided on an edge on the opposite side of the left and right side edges of the base portion 18 from the side on which the connecting portion 22 is provided, and bends to the upper surface side of the connecting portion 22 to hold the corner portion of the connecting portion 22. Yes.

車両の解体作業時には、電線30が引っ張られることによってワイヤバレル部16が基部18から浮き上がり、連結部22が押え部23から外れて破断し、アース側接続部11をアース部に残して電線30が回収される。   When the vehicle is disassembled, the wire barrel portion 16 is lifted from the base portion 18 by pulling the wire 30, the connecting portion 22 is detached from the presser portion 23, and is broken, leaving the ground side connection portion 11 in the ground portion. Collected.

さて、基部18のうちワイヤバレル部16の下側に重ねて配される部分(下板部24)には、ワイヤバレル部16のうちクリンプハイトの基準となる部分を露出させる窓部25が形成されている(図5参照)。ワイヤバレル部16においてクリンプハイトの基準となるのは、上板部19の前後方向略中央位置における湾曲形状の最下点(以下、基準点26と称する)である。窓部25は、下板部24のうち基準点26を含む部分の真下に形成されて下板部24を板厚方向(上下方向)に貫通する貫通穴とされている。窓部25は、図4に示すように、略円形状をなし、その中心軸の位置が基準点26の位置とほぼ一致している。窓部25を構成する周面は、中心軸に略平行をなしている。また、窓部25の径寸法は、下板部24の幅寸法の3分の1以下とされている。   Now, a window portion 25 that exposes a portion of the wire barrel portion 16 that serves as a reference for the crimp height is formed in a portion (the lower plate portion 24) of the base portion 18 that is disposed on the lower side of the wire barrel portion 16. (See FIG. 5). The crimp height reference in the wire barrel portion 16 is the lowest point (hereinafter referred to as a reference point 26) of the curved shape at the approximate center position in the front-rear direction of the upper plate portion 19. The window portion 25 is formed as a through hole that is formed directly below the portion including the reference point 26 in the lower plate portion 24 and penetrates the lower plate portion 24 in the plate thickness direction (vertical direction). As shown in FIG. 4, the window portion 25 has a substantially circular shape, and the position of the central axis substantially coincides with the position of the reference point 26. The peripheral surface constituting the window portion 25 is substantially parallel to the central axis. Further, the diameter of the window portion 25 is set to one third or less of the width of the lower plate portion 24.

ワイヤバレル部16のクリンプハイトを測定する作業においては、図5に示すように、マイクロメータMの測定面を圧着後のワイヤバレル部16の上面(2つの湾曲部の頂点)にセットし、マイクロメータMのダイヤルを回して、下板部24の窓部25に先端を差し入れて基準点26に接触させ、クリンプハイトの測定値を記録する。   In the operation of measuring the crimp height of the wire barrel portion 16, as shown in FIG. 5, the measurement surface of the micrometer M is set on the upper surface of the wire barrel portion 16 after crimping (the apex of the two curved portions). The dial of the meter M is turned to insert the tip into the window portion 25 of the lower plate portion 24 to contact the reference point 26, and the measured value of the crimp height is recorded.

次に、上記のように構成された実施例の作用および効果について説明する。
本実施例の端子金具10は、電線30の端末部に圧着される端子金具であり、電線30の導体31に加締め付けられるワイヤバレル部16と、ワイヤバレル部16の下側に重ねて配される下板部24とを有し、下板部24には、クリンプハイトの基準となる部分を露出させる窓部25が形成されている。この構成によれば、窓部25を介してワイヤバレル部16のクリンプハイトを直接測定することができるから、ワイヤバレル部16のクリンプハイトを精度良く測定することができる。
Next, operations and effects of the embodiment configured as described above will be described.
The terminal fitting 10 of the present embodiment is a terminal fitting that is crimped to the terminal portion of the electric wire 30, and is arranged so as to overlap the wire barrel portion 16 that is crimped to the conductor 31 of the electric wire 30 and the lower side of the wire barrel portion 16. The lower plate portion 24 is formed with a window portion 25 for exposing a portion serving as a reference for the crimp height. According to this configuration, since the crimp height of the wire barrel portion 16 can be directly measured through the window portion 25, the crimp height of the wire barrel portion 16 can be accurately measured.

また、窓部25が、基準となる部分の真下に形成された貫通穴とされている。この構成によれば、端子金具10の下板部24の開口部分を最小限にすることができるから、開口部を設けることによる端子金具10の強度の低下を抑えることができる。   Further, the window portion 25 is a through hole formed immediately below a reference portion. According to this structure, since the opening part of the lower board part 24 of the terminal metal fitting 10 can be minimized, the fall of the intensity | strength of the terminal metal fitting 10 by providing an opening part can be suppressed.

<他の実施例>
本発明は上記記述及び図面によって説明した実施例に限定されるものではなく、例えば次のような実施例も本発明の技術的範囲に含まれる。
(1)上記実施例では、本発明を、アース用の端子金具10に適用した場合について説明したが、これに限らず、本発明は、ワイヤバレル部の下側に重ねて配される部分を有する端子金具であれば、他の用途に係る端子金具にも適用することができる。
(2)上記実施例では、窓部25が、クリンプハイトの基準となる部分の真下に形成された貫通穴とされているが、これに限らず、例えば窓部は、下板部の側縁からクリンプハイトの基準となる部分を露出させる位置まで切り込んで形成されたスリット等であってもよい。
(3)上記実施例では、窓部25が円形状とされているが、これに限らず、窓部の形状はどのような形状であってもよい。
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the case where the present invention is applied to the terminal fitting 10 for grounding has been described. However, the present invention is not limited to this, and the present invention is not limited to the portion arranged on the lower side of the wire barrel portion. If it is a terminal metal fitting which has, it can apply also to the terminal metal fitting concerning another use.
(2) In the above embodiment, the window portion 25 is a through hole formed immediately below a portion serving as a reference for the crimp height. However, the present invention is not limited to this, and for example, the window portion is a side edge of the lower plate portion. Or a slit formed by cutting to a position where a portion serving as a reference for the crimp height is exposed.
(3) In the said Example, although the window part 25 was made into circular shape, not only this but the shape of a window part may be what kind of shape.

10…端子金具
16…ワイヤバレル部
24…下板部
25…窓部
30…電線
31…導体
DESCRIPTION OF SYMBOLS 10 ... Terminal metal fitting 16 ... Wire barrel part 24 ... Lower board part 25 ... Window part 30 ... Electric wire 31 ... Conductor

Claims (2)

電線の端末部に端子金具が圧着された端子金具付き電線の製造方法であり、
前記端子金具が、前記電線の導体に加締め付けられるワイヤバレル部と、
前記ワイヤバレル部のうちクリンプハイトの基準となる部分を露出させる窓部を有して前記ワイヤバレル部の下側に重ねて配される下板部と、を有し、
前記窓部を介して圧着後の前記ワイヤバレル部のクリンプハイトを直接測定する工程を経る端子金具付き電線の製造方法。
It is a manufacturing method of an electric wire with a terminal metal fitting in which a terminal metal fitting is crimped to the terminal portion of the electric wire ,
A wire barrel portion , wherein the terminal fitting is crimped to the conductor of the electric wire;
Have a, a lower plate portion which is disposed to overlap the lower side of the wire barrel portion has a window portion for exposing a portion that becomes the reference of the crimp height of the wire barrel portion,
The manufacturing method of the electric wire with a terminal metal fitting which passes through the process of measuring directly the crimp height of the said wire barrel part after crimping | compression-bonding through the said window part.
前記窓部が、前記基準となる部分の真下に形成された貫通穴である請求項1に記載の端子金具付き電線の製造方法。 The method for manufacturing an electric wire with terminal fitting according to claim 1, wherein the window portion is a through hole formed immediately below the reference portion .
JP2014128034A 2014-06-23 2014-06-23 Manufacturing method of electric wires with terminal fittings Expired - Fee Related JP6168417B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110749843A (en) * 2019-09-18 2020-02-04 苏州经纬通电子科技有限公司 Wire harness terminal crimping height standard calculation method and system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010080335A (en) * 2008-09-26 2010-04-08 Sumitomo Wiring Syst Ltd Terminal metal fitting, and electric wire with terminal metal fitting
JP5708383B2 (en) * 2011-09-01 2015-04-30 住友電装株式会社 Electric wire terminal structure
JP5741425B2 (en) * 2011-12-26 2015-07-01 株式会社オートネットワーク技術研究所 Earth connection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110749843A (en) * 2019-09-18 2020-02-04 苏州经纬通电子科技有限公司 Wire harness terminal crimping height standard calculation method and system

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