JP5322494B2

JP5322494B2 - Electrical wire

Info

Publication number: JP5322494B2
Application number: JP2008126293A
Authority: JP
Inventors: 友康村上
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2008-05-13
Filing date: 2008-05-13
Publication date: 2013-10-23
Anticipated expiration: 2028-05-13
Also published as: JP2009277438A

Description

本発明は、例えば互いに近接配置される装置間を接続するための装置間接続電線に関し、より具体的には、電気的特性を同一にするため銅電線と比較して大径になってしまう、太径のアルミニウム電線を、その限られたスペース内で小さな曲率半径で曲げてその装置間を接続するための装置間接続電線に関する。 The present invention relates to an inter-device connection electric wire for connecting, for example, devices arranged close to each other, more specifically, in order to make the electrical characteristics the same, the diameter becomes larger compared to a copper electric wire. The present invention relates to an inter-device connection electric wire for connecting a large-diameter aluminum electric wire with a small radius of curvature within the limited space to connect the devices.

従来、自動車等の車両内に配索される電線は、低コストで導電特性が優れた銅電線を使用するのが一般的であり、この銅電線と比較して導電性や機械的強度等の特性が劣るアルミニウム電線（アルミニウム合金電線も含む）は、あまり、使用されていなかった。
しかし、近年の環境問題に対する強い要求から、低燃費化を実現する一手段として車両の軽量化が叫ばれており、車両分野においても銅電線より軽量なアルミニウム電線の使用に関する要望が高まってきている。 Conventionally, electric wires routed in vehicles such as automobiles generally use copper wires that are low in cost and have excellent conductive properties, such as conductivity and mechanical strength compared to copper wires. Aluminum wires with poor properties (including aluminum alloy wires) have not been used much.
However, due to the recent strong demand for environmental problems, the weight reduction of vehicles has been screamed as a means to achieve low fuel consumption, and the demand for the use of aluminum wires that are lighter than copper wires has also increased in the vehicle field. .

アルミニウムは銅に次ぐ高い導電率を有し、伸線加工性にも優れ、且つ軽量（銅の１／３以下の比重）であるという特質を有することから、従前より架空送電線や架空配電線等の用途を中心に電線材料として使用されている。 Aluminum has the highest electrical conductivity after copper, is excellent in wire drawing workability, and is lightweight (specific gravity less than 1/3 of copper), so it has been used for overhead power transmission lines and overhead distribution lines. It is used as an electric wire material mainly for such applications.

アルミニウム電線の例としては、アルミニウム素線又はアルミニウム合金素線だけを撚り合わせて構成したアルミニウム電線や、銅被覆アルミニウム素線（例えば、特許文献１参照）を撚り合わせて構成したアルミニウム電線等が知られている。 Examples of aluminum wires include aluminum wires formed by twisting only aluminum wires or aluminum alloy wires, and aluminum wires formed by twisting copper-coated aluminum wires (for example, see Patent Document 1). It has been.

即ち、銅電線に替わって使用されるアルミニウム電線（アルミニウム合金電線も含む）は、導体としてアルミニウム製導体（アルミニウム合金製導体も含む）を有しており、銅の密度８．９６ｇ／ｃｍ^３に対して、アルミニウムの密度２．７０ｇ／ｃｍ^３と、密度が銅電線の略１/３であり、電線、しいてはワイヤハーネス全体の大幅な軽量化が可能である。しかし、その一方、アルミニウムの導電率は銅より低く、銅電線と同一の電気特性（許容負荷電流）を持たせるためには、銅電線と比較して直径を略１．６倍にする必要がある。 That is, an aluminum electric wire (including an aluminum alloy electric wire) used in place of the copper electric wire has an aluminum conductor (including an aluminum alloy conductor) as a conductor, and the density of copper is 8.96 g / cm ³ . On the other hand, the density of aluminum is 2.70 g / cm ³ and the density is about 1/3 of that of a copper electric wire, and the electric wire, and thus the entire wire harness can be significantly reduced in weight. However, on the other hand, the conductivity of aluminum is lower than that of copper, and in order to have the same electrical characteristics (allowable load current) as that of a copper wire, it is necessary to make the diameter approximately 1.6 times that of a copper wire. is there.

したがって、軽量化を図ってアルミニウム電線を採用した近年のワイヤハーネスは、銅電線を使用していた従来のワイヤハーネスよりも、電線及び電線束の太径化が進む傾向にある。 Therefore, recent wire harnesses that employ aluminum wires to reduce weight tend to have larger diameters of wires and wire bundles than conventional wire harnesses that use copper wires.

一方、近年、有害な温室効果ガスの排出量を低減するため、環境性能を実現する車両として、電動モータを駆動源として搭載した車両の開発が活発化している。
このような車両に搭載される電動モータは、高い駆動トルクを発揮できるようにインバータ等から大電流が供給される。通常、このようなインバータと電動モータとを接続する電線には、伝達ロスを少なくするため、一般的に、導体径が太く、且つ、その導体の周囲が絶縁性能の高い絶縁被覆で覆われた太径の電線が使用される。加えて、その環境性能を更に高めるために、車両の小型化も叫ばれており、このため電動モータやインバータ等の装置間のスペースも益々小さくなる傾向にあり、出来るだけ装置間を近接配置すること、即ち装置の高密度実装が市場から強く求められている。 On the other hand, in recent years, in order to reduce harmful greenhouse gas emissions, development of vehicles equipped with an electric motor as a drive source has become active as a vehicle that realizes environmental performance.
An electric motor mounted on such a vehicle is supplied with a large current from an inverter or the like so that a high driving torque can be exhibited. Usually, in order to reduce transmission loss in such an electric wire connecting the inverter and the electric motor, the conductor diameter is generally thick and the periphery of the conductor is covered with an insulating coating having high insulation performance. A thick wire is used. In addition, in order to further improve the environmental performance, the miniaturization of vehicles is also screamed. For this reason, the space between devices such as electric motors and inverters tends to become smaller and the devices are arranged as close as possible. That is, there is a strong demand from the market for high-density mounting of devices.

ところで、このような太径の電線は、一般に、絶縁被覆が相当に強大な曲げ剛性を持つため、スペースが限られた装置間において電線を配索する際には、小さな曲げ半径で方向変換させることができない。そして、前述のように軽量化のために、アルミニウム電線に置き換えようとした場合には、更に太径化が進み、一段と曲げ加工が困難になってしまう嫌いがある。 By the way, such a large-diameter electric wire generally has a considerably strong bending rigidity, so that when the electric wire is routed between devices with limited space, the direction is changed with a small bending radius. I can't. And when it is going to replace with an aluminum electric wire for weight reduction as mentioned above, there exists a dislike that a diameter increase will progress further and bending will become difficult more.

そこで、従来では、電線の配索向きを変えるため、電線本体自体を所定の形状に強制的に曲げるための装置を用いて曲げたり（例えば、特許文献２参照）、又は、配索する電線に必要以上の余長を付与して、迂回する配索経路により電線の向きを変えたり、或いは、電線の配索経路の途中に、配索方向を変える接続ボックスを追加装備するといった電線配索方法が取られることが一般的に行われている。 Therefore, conventionally, in order to change the wiring direction of the electric wire, the electric wire body itself is bent using a device for forcibly bending it into a predetermined shape (see, for example, Patent Document 2), or the electric wire to be wired A wire routing method that gives extra length more than necessary and changes the direction of the wires depending on the routing route to be detoured, or additionally has a connection box that changes the routing direction in the middle of the routing route of the wires. Is generally taken.

特開平１１−１８１５９３号公報JP-A-11-181593 特開平９−１６４４３０号公報JP-A-9-164430

しかしながら、前述のように配索する電線の余長を増大させて、迂回する配索経路により装置間を接続する従来の配索方法では、使用する電線の長さが増大して、電線重量の増加が車両の重量化を招くという問題が生じ、前述した車両軽量化の流れに逆行してしまう結果になってしまう。 However, in the conventional wiring method in which the extra length of the wires to be routed is increased as described above and the devices are connected by the bypass route, the length of the wires to be used is increased and The increase causes a problem that the weight of the vehicle is increased, which results in reversing the above-described flow of weight reduction of the vehicle.

また、前述した特許文献２のようなものでは、小さな曲げ半径で曲げようとした場合には、対応できる太径の電線の径寸法に限界がある。即ち、太径の電線は、一般に、重厚な絶縁被覆を備えており、この絶縁被覆の曲げ剛性が高く、小さな曲率で曲げることが難しい。このため、電線に小さな曲げが要求される装置相互の高密度実装には適さず、例えば、無理に太径の電線を小さな曲率で曲げた場合、その太径の電線が破損してしまう嫌いがあった。 Moreover, in the thing like patent document 2 mentioned above, when it is going to bend with a small bending radius, there exists a limit in the diameter dimension of the large diameter electric wire which can respond. That is, a large-diameter electric wire generally has a heavy insulation coating, and this insulation coating has a high bending rigidity and is difficult to bend with a small curvature. For this reason, it is not suitable for high-density mounting between devices that require a small bend in the wire.For example, if a large-diameter wire is bent with a small curvature, the large-diameter wire will be damaged. there were.

本発明は前述した問題に鑑みてなされたものであり、その目的は、例えばアルミニウム電線（アルミニウム合金電線も含む）等の太径の電線を、近接配置された装置間を接続するために用いる場合にも、絶縁被覆の曲げ剛性のために曲げが制限されることがなく、装置相互の配置に合わせられて、小さな曲げ半径で装置間に適切に配索されて、装置接続電線の配索長の短縮により軽量化を図ることができ、且つ装置接続電線に小さな曲げ半径が要求される装置相互の高密度実装を実現して、車両内の効率的なスペース利用を実現することができる装置間接続電線を提供することにある。 The present invention has been made in view of the above-described problems, and its purpose is to use, for example, a large-diameter electric wire such as an aluminum electric wire (including an aluminum alloy electric wire) to connect between adjacently arranged devices. In addition, the bending length is not restricted due to the bending rigidity of the insulation coating, and the wiring length of the device connecting wire is properly routed between the devices with a small bending radius according to the mutual arrangement of the devices. It is possible to reduce the weight by shortening the device, and realize high-density mounting between devices that require a small bending radius for the device connection wire, so that efficient use of space in the vehicle can be realized. It is to provide a connecting wire.

本発明の前述した目的は、下記の構成により達成される。
（１）装置相互間を電気的に接続するための電線本体を備え、
当該電線本体が、
当該電線本体の長手方向に沿って延長すると共に当該電線本体の径方向の中央部に位置する中心導体と、
当該中心導体をその周方向に包囲しながら前記長手方向に沿って延長し、且つ前記電線本体の外面を形成する絶縁被覆と、を有し、
前記電線本体の前記長手方向の少なくとも１箇所に曲げ部を有する装置間接続電線であって、
当該曲げ部は、当該曲げ部に位置する前記絶縁被覆の、前記電線本体の周方向の少なくとも一部分が剥ぎ取られることにより形成された前記中心導体が前記電線本体から露出した絶縁被覆除去部と、当該絶縁被覆除去部を含めて前記電線本体の周方向にわたって前記電線本体を覆う前記絶縁被覆よりも可撓性に優れた蛇腹管と、前記蛇腹管と前記絶縁被覆除去部との隙間に注入され、注入後に硬化して前記隙間を封止する樹脂製の止水材と、を含んでいることを特徴とする装置間接続電線。
（２）前記電線本体は、前記中心導体としてアルミニウム製導体を有するアルミニウム電線、又は前記中心導体としてアルミニウム合金製導体を有するアルミニウム合金電線であることを特徴とする上記（１）の装置間接続電線。 The above-described object of the present invention is achieved by the following configuration.
(1) Equipped with a wire body for electrical connection between devices,
The wire body is
A central conductor that extends along the longitudinal direction of the electric wire body and is located at the radial center of the electric wire body;
An insulation coating extending along the longitudinal direction while surrounding the central conductor in the circumferential direction and forming an outer surface of the electric wire body,
An inter-apparatus connection electric wire having a bent portion in at least one place in the longitudinal direction of the electric wire body,
The bent portion is an insulating coating removing portion in which the central conductor formed by peeling off at least a part of the insulating coating located in the bent portion in the circumferential direction of the electric wire main body is exposed from the electric wire main body , Injected into the gap between the bellows tube, which is superior in flexibility to the insulating coating covering the electric wire body over the circumferential direction of the electric wire body including the insulating coating removing part, and the bellows tube and the insulating coating removing part And a resin water stop material that cures after injection and seals the gap .
(2) The inter-device connecting wire according to (1) , wherein the electric wire body is an aluminum electric wire having an aluminum conductor as the central conductor, or an aluminum alloy electric wire having an aluminum alloy conductor as the central conductor. .

上記（１）の構成によれば、装置間接続電線の曲げ部となる箇所は、曲げ加工する前に、絶縁被覆の剥ぎ取り（切除）が施されることにより曲げ易くされている。このため、例えばアルミニウム電線（アルミニウム合金電線も含む）等の太径の電線を、近接配置された装置間を接続するために用いる場合にも、絶縁被覆の曲げ剛性のためにこの電線の曲げ半径が制限されることがなく、装置相互の配置に合わせられて、小さな曲げ半径で装置間に適切に配索され、電線の配索長の短縮により軽量化を図ることができる。更に、電線に小さな曲げ半径が要求される装置相互の高密度実装を実現して、車両内の効率的なスペース活用を実現することができる。また、曲げ加工を終えて配索が完了した装置間接続電線の曲げ部の絶縁被覆を剥ぎ取られた部分（即ち、絶縁被覆除去部）は、例えばグロメット等に代表される蛇腹管で覆われるため、曲げ部において電線の絶縁性及び耐衝撃性等が低下することもない。なお、電線の配索をする前に、縁被覆除去部を予め蛇腹管で覆っても良い。
また、電線の絶縁性及び耐衝撃性等を確保しつつ、装置間での電線の配索後も、その曲げ部で任意の角度で曲げることができる。更に、蛇腹管は、絶縁被覆よりも可撓性に優れているため、曲げ加工前に絶縁被覆除去部をこの蛇腹管で覆った状態にしておくことで、電線保管時等における絶縁被覆除去部の汚損等を防止することができる。加えて、電線の配索現場で蛇腹管の装着作業を行う必要が無くなるため、電線の配索作業を簡便にすることができる。
更に、蛇腹管と、絶縁被覆除去部と、の隙間には、注入後に硬化してこの隙間を封止する樹脂製の止水材が注入されている。このため、電線の防水性を確実に確保できる。
上記（２）の構成によれば、装置間接続電線は導体としてアルミニウム製導体を有するアルミニウム電線、又は導体としてアルミニウム合金製導体を有するアルミニウム合金電線とされるので、車両等に配索される電線の大幅な軽量化及び低燃費化を実現することができる。 According to the configuration of (1 ) above, a portion to be a bent portion of the inter-device connection electric wire is easily bent by stripping (cutting ) the insulating coating before bending. For this reason, even when a large-diameter electric wire such as an aluminum electric wire (including an aluminum alloy electric wire) is used to connect devices arranged in close proximity, the bending radius of the electric wire can be reduced due to the bending rigidity of the insulating coating. Is not restricted, and is appropriately routed between devices with a small bending radius according to the mutual arrangement of the devices, and the weight can be reduced by shortening the wiring length of the electric wires. Furthermore, it is possible to realize high-density mounting between devices in which a small bending radius is required for the electric wire, thereby realizing efficient use of space in the vehicle. In addition, the portion of the bent portion of the connecting wire between the devices that has been bent and wired (ie, the insulating coating removing portion ) is covered with a bellows tube represented by , for example, a grommet. For this reason, the insulation and impact resistance of the electric wire are not lowered at the bent portion. In addition, you may cover an edge coating removal part beforehand with a bellows tube before wiring an electric wire.
In addition, the wire can be bent at an arbitrary angle at the bent portion even after the wires are routed between the devices while ensuring the insulation and impact resistance of the wires. Furthermore, the bellows tube is excellent in flexibility than the insulating coating, by setting the prior bending insulating coating removal portion in a state covered with the bellows tube, the insulating coating removing unit in the wire during storage, etc. it is possible to prevent the contamination and the like. In addition, since it is not necessary to perform the work of attaching the bellows tube at the electric wire arrangement site, the electric wire arrangement work can be simplified.
Further, a resin water stop material that is cured after injection and seals the gap is injected into the gap between the bellows tube and the insulating coating removing portion . For this reason, the waterproofness of an electric wire is reliably securable.
According to the configuration of ( 2 ) above, the inter-device connection electric wire is an aluminum electric wire having an aluminum conductor as a conductor, or an aluminum alloy electric wire having an aluminum alloy conductor as a conductor. Can achieve a significant reduction in weight and fuel consumption.

本発明によれば、例えばアルミニウム電線（アルミニウム合金電線も含む）等の太径の電線を、近接配置された装置間を接続するために用いる場合にも、絶縁被覆の曲げ剛性のために曲げが制限されることがなく、装置相互の配置に合わせられて、小さな曲げ半径で装置間に適切に配索されて、装置接続電線の配索長の短縮により軽量化を図ることができ、且つ装置接続電線に小さな曲げ半径が要求される装置相互の高密度実装を実現して、車両内の効率的なスペース利用を実現することができる装置間接続電線を提供することができる。 According to the present invention, even when a large-diameter electric wire such as an aluminum electric wire (including an aluminum alloy electric wire) is used to connect between adjacently arranged devices, the bending due to the bending rigidity of the insulating coating can be achieved. There is no limitation, and it is possible to reduce the weight by shortening the wiring length of the device connecting wire by being properly routed between the devices with a small bending radius according to the mutual arrangement of the devices. It is possible to provide an inter-device connection electric wire that can realize high-density mounting between devices that require a small bending radius for the connection electric wire and can realize efficient use of space in the vehicle.

以下、本発明に係る装置間接続電線の好適な複数の実施形態について、図面を参照しながら説明する。 Hereinafter, a plurality of preferred embodiments of the inter-device connection electric wire according to the present invention will be described with reference to the drawings.

（第１実施形態）
まず、本発明に係る第１実施形態について、図１〜図３を参照しながら説明する。
図１は、本発明に係る装置間接続電線の断面図である。図２は、本発明に係る装置間接続電線の第１実施形態の構造説明図であり、（ａ）は装置間接続電線の曲げ部となる箇所の絶縁被覆を曲げ加工の前に剥ぎ取りした状態の説明図であり、（ｂ）は装置間接続電線の曲げ部となる箇所を曲げ加工した後の状態の説明図である。図３は本発明の装置間接続電線により接続された装置相互の配置説明図であり、（ａ）は斜視図であり、（ｂ）は平面図であり、（ｃ）は正面図である。 (First embodiment)
First, a first embodiment according to the present invention will be described with reference to FIGS.
FIG. 1 is a cross-sectional view of an inter-device connection wire according to the present invention. FIG. 2 is an explanatory view of the structure of the first embodiment of the inter-apparatus connection electric wire according to the present invention. FIG. It is explanatory drawing of a state, (b) is explanatory drawing of the state after bending the location used as the bending part of the connecting wire between apparatuses. FIG. 3 is an explanatory view of the arrangement of devices connected by the inter-device connection wire of the present invention, (a) is a perspective view, (b) is a plan view, and (c) is a front view.

本実施形態の装置間接続電線１Ａは、図３に示すように、自動車等の車両内に搭載されるインバータ４と電動モータ６との間を電気的に接続するためのアルミニウム電線である。 As shown in FIG. 3, the inter-device connection electric wire 1 </ b> A of the present embodiment is an aluminum electric wire for electrically connecting the inverter 4 and the electric motor 6 mounted in a vehicle such as an automobile.

本実施形態の場合では、装置間接続電線１Ａは、大電流用の電線を使用した所謂太径の電線であり、図１に示すように、インバータ４と電動モータ６との間を電気的に接続するための電線本体１１を備え、この電線本体１１がこの電線本体１１の長手方向に沿って延長すると共にこの電線本体１１の径方向の中央部（中心部）に位置する中心導体１２と、この中心導体１２をその周方向で包囲しながら長手方向に沿って延長し、且つこの電線本体１１の外面を形成する絶縁被覆１３と、を有している。
なお、中心導体１２は、アルミニウム製又はアルミニウム合金製の素線が複数撚り合わせて形成された導線であり、絶縁被覆１３は、この中心導体１２を外部に対し絶縁すると共に電線本体１１を外部の衝撃から保護する機能を有した電線被覆である。 In the case of the present embodiment, the inter-device connection wire 1A is a so-called large-diameter wire using a large-current wire, and electrically connects the inverter 4 and the electric motor 6 as shown in FIG. An electric wire body 11 for connection, the electric wire main body 11 extends along the longitudinal direction of the electric wire main body 11, and a central conductor 12 positioned at a central portion (central portion) in the radial direction of the electric wire main body 11, The central conductor 12 is surrounded by its circumferential direction and extends along the longitudinal direction, and has an insulating coating 13 that forms the outer surface of the electric wire body 11.
The central conductor 12 is a conducting wire formed by twisting a plurality of strands made of aluminum or aluminum alloy, and the insulation coating 13 insulates the central conductor 12 from the outside and the wire body 11 from the outside. It is an electric wire covering having a function of protecting from impact.

そして、装置間接続電線１Ａの端部の絶縁被覆１３が剥ぎ取られて、その端部で中心導線１２が露出され、そしてこの露出された中心導体１２に、インバータ４又は電動モータ６の被接続部（図示しない）に接続するための接続端子２１（図２参照）が電気的に接続されている。この接続端子２１を用いて、装置間接続電線１Ａと接続端子２１とが電気的に接続されることになる。
また、この接続端子２１にはボルト等を挿通可能な貫通孔２１ａが設けられており、図示しないボルトが貫通孔２１ａに挿通され、電動モータ６又はインバータ４の被接続部に締結して、電動モータ６とインバータ４とが装置間接続電線１Ａを介して導通接続することになる。 Then, the insulation coating 13 at the end of the inter-device connection electric wire 1A is peeled off, the central conductor 12 is exposed at the end, and the inverter 4 or the electric motor 6 is connected to the exposed central conductor 12. The connection terminal 21 (refer FIG. 2) for connecting to a part (not shown) is electrically connected. Using this connection terminal 21, the inter-device connection electric wire 1A and the connection terminal 21 are electrically connected.
Further, the connection terminal 21 is provided with a through hole 21a through which a bolt or the like can be inserted. A bolt (not shown) is inserted into the through hole 21a and fastened to a connected portion of the electric motor 6 or the inverter 4 to be electrically driven. The motor 6 and the inverter 4 are conductively connected via the inter-device connecting wire 1A.

電動モータ６とインバータ４と間に装置間接続電線１Ａを配索するため、これら装置間に配索される際にその長手方向において、この装置間接続電線１Ａの曲げ部２Ａとなる箇所に対し、その電線本体１１の曲げ加工前に、その該当箇所の絶縁被覆１３を所定の長手方向長さで且つ電線本体１１の周方向にわたって全て剥ぎ取りして、曲げ易くしておく。 In order to route the inter-device connecting wire 1A between the electric motor 6 and the inverter 4, when the wires are routed between these devices, in the longitudinal direction, the portion that becomes the bent portion 2A of the inter-device connecting wire 1A. Before the electric wire main body 11 is bent, the insulating coating 13 at the corresponding portion is peeled off over the entire length of the electric wire main body 11 with a predetermined length in the longitudinal direction to make it easy to bend.

この曲げ部２Ａに位置する絶縁被覆１３が剥ぎ取られることにより、図２（ａ）に示すように、絶縁被覆除去部１４（中心導体１２が電線本体１１から露出した部分）が形成されることになる。そして、別に用意された絶縁材１８が、この絶縁被覆除去部１４を含めて電線本体１１の周方向にわたって覆う。
即ち、装置間接続電線１Ａの曲げ部２Ａは、この絶縁被覆除去部１４と、この絶縁材１８と、を含めて構成されることになる。 As shown in FIG. 2A, the insulation coating removal portion 14 (the portion where the central conductor 12 is exposed from the electric wire body 11) is formed by peeling off the insulation coating 13 located in the bent portion 2A. become. Then, a separately prepared insulating material 18 covers the circumferential direction of the electric wire body 11 including the insulating coating removing portion 14.
That is, the bent portion 2A of the inter-device connection electric wire 1A includes the insulating coating removing portion 14 and the insulating material 18.

また、本実施形態では、この絶縁材１８として、絶縁被覆１３よりも可撓性に優れた蛇腹管（グロメット等）が採用され、また、この蛇腹管は、僅かな曲げ力で簡単に曲げることができるため、絶縁被覆１３の剥ぎ取りが終了したら、直ちに、絶縁被覆除去部１４上に被冠装着され、絶縁被覆除去部１４の周囲を覆う。 In the present embodiment, a bellows tube (grommet or the like) that is more flexible than the insulating coating 13 is adopted as the insulating material 18, and the bellows tube can be easily bent with a slight bending force. Therefore, as soon as the stripping of the insulating coating 13 is finished, the crown is mounted on the insulating coating removing unit 14 to cover the periphery of the insulating coating removing unit 14.

蛇腹管が採用された絶縁材１８は、図２（ａ）に示すように、装置間接続電線１Ａの絶縁被覆除去部１４全体を少なくとも覆うように、その両端部が、所定の余裕寸法をもった長手方向長さＬが設定されている。
そして、絶縁材１８の両端部は、熱収縮チューブ１９により、絶縁被覆１３に密着固定されている。 As shown in FIG. 2A, the insulating material 18 employing the bellows tube has a predetermined margin dimension at both ends so as to cover at least the entire insulating coating removing portion 14 of the inter-device connecting wire 1A. A longitudinal length L is set.
Then, both end portions of the insulating material 18 are closely fixed to the insulating coating 13 by heat shrinkable tubes 19.

絶縁被覆除去部１４の周囲を絶縁材１８で覆う処理を終えた装置間接続電線１Ａは、図３に示した装置間の配索経路に適合するように、曲げ部２Ａとなる箇所に曲げを加えて、図２（ｂ）に示すように略直角に屈曲した曲げ部２Ａに形成し、電動モータ６とインバータ４との装置間に設置される。
太径の電線である装置間接続電線１Ａにおける曲げ強さは、絶縁被覆１３が主要因であるので、絶縁被覆１３を剥ぎ取りした本実施形態の屈曲分２Ａは、比較的小さな操作力で曲げることができる。 The inter-apparatus connecting wire 1A that has finished the process of covering the periphery of the insulating coating removing part 14 with the insulating material 18 is bent at the position that becomes the bending part 2A so as to conform to the routing path between the apparatuses shown in FIG. In addition, as shown in FIG. 2 (b), it is formed in a bent portion 2 </ b> A bent substantially at a right angle, and is installed between the electric motor 6 and the inverter 4.
Since the insulation coating 13 is the main factor in the bending strength of the inter-device connection wire 1A that is a large-diameter wire, the bent portion 2A of the present embodiment where the insulation coating 13 has been peeled off is bent with a relatively small operating force. be able to.

このように、装置４，６相互を接続する装置間接続電線１Ａの曲げ部２Ａとなる箇所を、曲げ加工する前に、絶縁被覆１３の剥ぎ取りにより曲げ易くした場合には、絶縁被覆１３の曲げ剛性のために装置間接続電線１Ａの曲げが制限されることがなく、装置４，６相互の配置に合わせて、小さな曲げ半径で装置４，６間に適切に配索して、装置間接続電線１Ａの配索長の短縮により軽量化を図ることができる。 As described above, when the portion that becomes the bending portion 2A of the inter-device connection wire 1A that connects the devices 4 and 6 is easily bent by peeling off the insulating coating 13 before bending, The bending of the inter-device connecting wire 1A is not limited due to the bending rigidity, and the devices 4 and 6 are appropriately routed between the devices 4 and 6 with a small bending radius in accordance with the mutual arrangement of the devices 4 and 6. Weight reduction can be achieved by shortening the wiring length of the connecting wire 1A.

更に、配索される電線に小さな曲げ半径が要求される装置４，６相互の高密度実装を実現して、車両内の効率的なスペース活用を実現することができる。 Furthermore, it is possible to realize high-density mounting between the devices 4 and 6 that require a small bending radius for the wires to be routed, thereby realizing efficient use of space in the vehicle.

また、装置間接続電線１Ａの曲げ部２Ａの絶縁被覆除去部１４は、絶縁材１８で覆われているため、曲げ部２Ａにおいて電線の絶縁性及び耐衝撃性等が低下することもない。 Moreover, since the insulation coating removal part 14 of the bending part 2A of the inter-apparatus connecting electric wire 1A is covered with the insulating material 18, the insulation and impact resistance of the electric wire and the like are not deteriorated in the bending part 2A.

更に、絶縁材１８として、例えばグロメット等に代表される蛇腹管を採用したので、電線の絶縁性及び耐衝撃性等を確保しつつも、装置間での電線の配索後も、その曲げ部２Ａで任意の角度で曲げることができる。更に、蛇腹管は、絶縁被覆１３よりも可撓性に優れているため、図２（ａ）に示したように曲げ加工前に絶縁被覆除去部１４をこの蛇腹管で覆った状態にしておくことで、電線保管時等における絶縁被覆除去部１４の汚損等を防止することができる。
加えて、電線の配索現場で蛇腹管の装着作業を行う必要が無くなるため、電線の配索作業を簡便にすることができる。 Furthermore, since the bellows tube represented by the grommet etc. was employ | adopted as the insulating material 18, for example, the bending part is maintained after the wiring of the electric wire between apparatuses, ensuring the insulation of a wire, impact resistance, etc. It can be bent at any angle with 2A. Further, since the bellows tube is more flexible than the insulating coating 13, the insulating coating removing portion 14 is covered with the bellows tube before bending as shown in FIG. 2 (a). As a result, it is possible to prevent the insulation coating removal portion 14 from being soiled when the electric wire is stored.
In addition, since it is not necessary to perform the work of attaching the bellows tube at the electric wire arrangement site, the electric wire arrangement work can be simplified.

なお、本実施形態では、絶縁材１８として可撓性に優れた蛇腹管を使用したため、装置間接続電線１Ａを曲げ加工する前に、絶縁材１８を絶縁被覆除去部分に装着したが、例えば、使用する絶縁材１８が単純な円筒構造で曲げ形状が保持されたものである場合には、装置間接続電線１Ａの曲げ加工の終了後に、絶縁材１８の装着を行うように、装着時期をずらしても良い。 In this embodiment, since the bellows tube excellent in flexibility is used as the insulating material 18, the insulating material 18 is attached to the insulating coating removal part before bending the inter-device connecting wire 1 </ b> A. When the insulating material 18 to be used has a simple cylindrical structure and the bent shape is maintained, the mounting timing is shifted so that the insulating material 18 is mounted after the bending process of the inter-apparatus connecting wire 1A. May be.

また、装置間接続電線１Ａの防水性を確実に確保するために、絶縁材１８と絶縁被覆除去部１４との隙間に、注入後に硬化して隙間を封止する樹脂製の止水材が注入されるとより好適である。なお、装置間接続電線１Ａの曲げ加工を行った後で、この注入加工を行うのが良い。 In addition, in order to ensure the waterproof property of the inter-device connecting wire 1A, a resin water-stopping material that is cured after injection and seals the gap is injected into the gap between the insulating material 18 and the insulating coating removing portion 14. More preferably. In addition, it is good to perform this injection | pouring process after bending the inter-apparatus connection electric wire 1A.

（第２実施形態）
次に、本発明に係る第２実施形態について、図４を参照しながら説明する。
図４は本発明に係る装置間接続電線の第２実施形態の構造説明図であり、（ａ）は装置間接続電線の曲げ部となる箇所の絶縁被覆を曲げる前に剥ぎ取りした状態の説明図であり、（ｂ）は装置間接続電線の曲げ部となる箇所を曲げた状態の説明図である。 (Second Embodiment)
Next, a second embodiment according to the present invention will be described with reference to FIG.
FIG. 4 is a structural explanatory view of a second embodiment of the inter-device connection electric wire according to the present invention, and (a) is an illustration of a state where the insulation coating at a portion to be a bent portion of the inter-device connection electric wire is stripped before bending. It is a figure, (b) is explanatory drawing of the state which bent the location used as the bending part of the connecting wire between apparatuses.

本実施形態の装置間接続電線１Ｂも、前述した第１実施形態と同様に、自動車等の車両に搭載されるインバータ４と電動モータ６との間を電気的に接続するための、大電流用の太径のアルミニウム電線である。また、本実施形態は、曲げ部２Ｂ以外の構成は第１実施形態に示した装置間接続電線１Ａと共通であり、また、曲げ部２Ｂとなる箇所も、図４（ａ）に示すように、電線の曲げ加工前に、予め、その箇所の絶縁被覆１３を所定長さに渡って剥ぎ取りして、曲げ易くしておく点は、第１実施形態と共通であるので、この共通部分については同一又は同等符号をすることにより、その説明を簡略化或いは省略する。 Similarly to the first embodiment described above, the inter-device connection electric wire 1B of the present embodiment is also used for a large current for electrically connecting the inverter 4 and the electric motor 6 mounted on a vehicle such as an automobile. This is a thick aluminum wire. Further, in the present embodiment, the configuration other than the bent portion 2B is the same as that of the inter-device connection electric wire 1A shown in the first embodiment, and the portion to be the bent portion 2B is also as shown in FIG. The point that the insulating coating 13 is stripped over a predetermined length in advance before bending the wire to make it easy to bend is the same as in the first embodiment. Are denoted by the same or equivalent symbols, and the description thereof is simplified or omitted.

ここで、本実施形態の装置間接続電線１Ｂの場合、曲げ部２Ｂに位置する絶縁被覆１３の剥ぎ取りにより形成された絶縁被覆除去部１４を覆う絶縁材２２として、前述の蛇腹管に代えて、曲げ部２Ｂをその曲げ形状のまま収容する、硬質樹脂により筒構造に形成されたプロテクタを採用する。
そして、この絶縁材２２は、絶縁被覆除去部１４に所定の曲げ加工を施した後に、この絶縁被覆除去部１４に装着されることになり、即ち、本実施形態の装置間接続電線１Ｂの曲げ部２Ｂは、絶縁被覆除去部１４と、絶縁材２２と、を含んで構成されることになる。 Here, in the case of the inter-device connection electric wire 1B of the present embodiment, the insulating material 22 that covers the insulating coating removing portion 14 formed by peeling off the insulating coating 13 located in the bent portion 2B is used instead of the above-described bellows tube. A protector that accommodates the bent portion 2B in its bent shape and is formed in a cylindrical structure with a hard resin is employed.
And this insulating material 22 will be mounted | worn with this insulation coating removal part 14, after giving a predetermined bending process to the insulation coating removal part 14, ie, the bending of the inter-apparatus connection electric wire 1B of this embodiment. The part 2 </ b> B includes the insulating coating removing part 14 and the insulating material 22.

更に、本実施形態の場合には、絶縁材２２と絶縁被覆除去部分１４との隙間には、注入後に硬化して隙間を封止する樹脂製の止水材２４を注入して止水し、防水性を高めている。 Further, in the case of this embodiment, a resin water-stopping material 24 that cures after injection and seals the gap is injected into the gap between the insulating material 22 and the insulating coating removal portion 14 to stop the water, Increases waterproofness.

以上に説明したように、本実施形態によれば、前述した第１実施形態と同様な効果を奏することができるが、特に、絶縁被覆除去部１４の周囲を覆う絶縁材２２が、硬質樹脂製のプロテクタであるため、可撓性に富んだ蛇腹管を使用した第１実施形態の場合と比較すると、曲げ部２Ｂ内の中心導体１２等をより堅固に保護することが可能になる。更に、確実に所定の曲げ形状で固定でき、例えばエンジン等の内燃機関からの振動が伝わった場合にも、この振動に対し電線の配索位置がずれることがない。 As described above, according to the present embodiment, the same effects as those of the first embodiment described above can be obtained. In particular, the insulating material 22 that covers the periphery of the insulating coating removing portion 14 is made of a hard resin. Therefore, as compared with the case of the first embodiment using a flexible bellows tube, the central conductor 12 and the like in the bent portion 2B can be more firmly protected. Furthermore, it can be reliably fixed in a predetermined bending shape. For example, when vibration from an internal combustion engine such as an engine is transmitted, the wiring position of the electric wire does not shift with respect to this vibration.

ここで、以上の各実施の形態では、装置間接続電線１Ａ，１Ｂを曲げ易くするために、曲げ部２Ａ，２Ｂとなる箇所の絶縁被覆１３を所定長且つ径方向にわたって全て剥ぎ取ったが、全て剥ぎ取らずに、曲げ部２Ａ，２Ｂの内径側に位置する絶縁被覆１３の部分のみを剥ぎ取って、曲げ易くしても良い。或いは、剥ぎ取り自体を行わずに、カッター等の刃物等を用いて絶縁被覆１３に周方向の切り込みのみを施すことにより、曲げ易くするようにしても良い。 Here, in each of the above embodiments, in order to easily bend the inter-apparatus connection wires 1A and 1B, the insulating coating 13 at the location to be the bent portions 2A and 2B was peeled off over a predetermined length and the radial direction. Instead of stripping all, only the portion of the insulating coating 13 located on the inner diameter side of the bent portions 2A and 2B may be stripped to facilitate bending. Or you may make it bend | fold easily by giving only the cutting of the circumferential direction to the insulating coating 13 using cutters, such as a cutter, without stripping itself.

また、この切り込みを施す場合には、図５に示すように、曲げ部２Ａ，２Ｂの内径側に位置する絶縁被覆１６の部分に「く」字状の切込みを長手方向に連続して２箇所、互いに「く」字状の開口部が向かうように施すと、より容易に電線本体１１を曲げられて好適である。この場合には、図５に示すように、この「く」字状の切り込みが施された部分が絶縁被覆切込部１１４となり、この絶縁被覆切込部１１４が前述した絶縁材に覆われることになる。
このように径方向の切り込みを形成する構成においては、絶縁被覆１３を剥ぎ取りする場合よりも加工が容易になり、作業性、生産性を向上させることが可能になる。 Further, in the case of making this cut, as shown in FIG. 5, two "C" -shaped cuts are continuously provided in the longitudinal direction in the portion of the insulating coating 16 located on the inner diameter side of the bent portions 2A and 2B. It is preferable that the electric wire main body 11 be bent more easily if it is applied so that the "<"-shaped openings face each other. In this case, as shown in FIG. 5, the portion where the “<”-shaped cut is made becomes the insulating coating cut portion 114, and this insulating coating cut portion 114 is covered with the insulating material described above. become.
In the configuration in which the radial cuts are formed in this way, processing becomes easier than when the insulating coating 13 is peeled off, and workability and productivity can be improved.

なお、本発明は、前述した各実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。
例えば、本発明に係る曲げ部を有する太径の電線は、前述の実施形態に示した電線に限らず、シールド電線、複合電線等、種々の絶縁被覆を有する電線に適用することができる。また、曲げ部は一箇所に限らず、複数設けてもよい。
更に、前述した各実施形態の装置間接続電線においては、導体として軽量化に適したアルミニウム製導体を採用したアルミニウム電線（アルミニウム合金電線も含む）を採用しており、この採用により電線が太径化した場合にも、近接配置された装置間を接続する電線として自動車等の車両内に広く利用可能である。これにより、車両等に配索される電線の大幅な軽量化及び低燃費化を実現することができる。 In addition, this invention is not limited to each embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.
For example, the large-diameter electric wire having a bent portion according to the present invention is not limited to the electric wire shown in the above-described embodiment, but can be applied to electric wires having various insulating coatings such as shielded electric wires and composite electric wires. Moreover, a bending part may be provided not only in one place but in multiple numbers.
Furthermore, in the inter-device connection electric wires of each of the embodiments described above, an aluminum electric wire (including an aluminum alloy electric wire) that employs an aluminum conductor suitable for weight reduction is adopted as the conductor. Even in the case of an electric wire, it can be widely used in a vehicle such as an automobile as an electric wire for connecting devices arranged close to each other. Thereby, the significant weight reduction and fuel consumption reduction of the electric wire wired by vehicles etc. are realizable.

更に、太径のアルミニウム電線のアルミニウムとしては、純アルミニウムに限らず、アルミを含む金属、例えば鉄、銅、マンガン、ケイ素、マグネシウム、亜鉛、ニッケル等とのアルミニウム合金も含みことができ、この場合にも前述と同様に実施することができ、且つ前述と同様な作用及び効果を奏することができる。
なお、このアルミニウム合金のうち好ましい具体例としては、アルミニウムと鉄との合金を例示することができる。この合金を採用した場合、純アルミニウムの導線に比べて、延び易く、強度（特に引張強度）を増すことができて好適である。 Furthermore, the aluminum of the large-diameter aluminum wire is not limited to pure aluminum, but can also include an aluminum alloy such as iron, copper, manganese, silicon, magnesium, zinc, nickel, etc. In addition, the present invention can be carried out in the same manner as described above, and the same operations and effects as described above can be achieved.
A preferred specific example of this aluminum alloy is an alloy of aluminum and iron. Employing this alloy is preferable because it can be easily extended and the strength (particularly tensile strength) can be increased as compared with a lead wire made of pure aluminum.

また、本発明に係る装置間接続電線で接続される装置も、前述の実施形態で示したインバータと電動モータに限るものではなく、電線により接続される車載の各種の電気装置（２次電池、バッテリー等も含む）相互の接続に応用することができる。そして、車両内の多数箇所に採用することで、車載の電気配線の軽量化を促進することができる。 Further, the device connected by the inter-device connection electric wire according to the present invention is not limited to the inverter and the electric motor shown in the above-described embodiment, and various on-vehicle electric devices (secondary battery, (Including batteries etc.) Can be applied to mutual connection. And by employ | adopting at many places in a vehicle, the weight reduction of a vehicle-mounted electrical wiring can be accelerated | stimulated.

本発明に係る装置間接続電線の断面図である。It is sectional drawing of the apparatus connecting wire which concerns on this invention. 本発明に係る装置間接続電線の第１実施形態の構造説明図であり、（ａ）は装置間接続電線の曲げ部となる箇所の絶縁被覆を曲げ加工の前に剥ぎ取りした状態の説明図であり、（ｂ）は装置間接続電線の曲げ部となる箇所を曲げ加工した後の状態の説明図である。BRIEF DESCRIPTION OF THE DRAWINGS It is structure explanatory drawing of 1st Embodiment of the connecting wire between apparatuses which concerns on this invention, (a) is explanatory drawing of the state which peeled off the insulation coating of the location used as the bending part of the connecting wire between apparatuses before bending. (B) is explanatory drawing of the state after bending the location used as the bending part of the connecting wire between apparatuses. 本発明の装置間接続電線により接続された装置相互の配置説明図であり、（ａ）は斜視図、（ｂ）は平面図、（ｃ）は正面図である。It is arrangement | positioning explanatory drawing of the apparatuses connected with the connecting wire between apparatuses of this invention, (a) is a perspective view, (b) is a top view, (c) is a front view. 本発明に係る装置間接続電線の第２実施形態の構造説明図であり、（ａ）は装置間接続電線の曲げ部となる箇所の絶縁被覆を曲げる前に剥ぎ取りした状態の説明図であり、（ｂ）は装置間接続電線の曲げ部となる箇所を曲げた状態の説明図である。It is structure explanatory drawing of 2nd Embodiment of the connecting wire between apparatuses which concerns on this invention, (a) is explanatory drawing of the state stripped off before bending the insulation coating of the location used as the bending part of an connecting wire between apparatuses. (B) is explanatory drawing of the state which bent the location used as the bending part of the connecting wire between apparatuses. 本発明に係る装置間接続電線の他の実施形態を示すための説明図であり、（ａ）は絶縁被覆に切り込みが施された装置間接続電線を示す説明図であり、（ｂ）はこの装置間接続電線が曲げ加工された後の状態の説明図である。It is explanatory drawing for showing other embodiment of the connecting wire between apparatuses which concerns on this invention, (a) is explanatory drawing which shows the connecting wire between apparatuses in which the insulation coating was cut, (b) is this It is explanatory drawing of the state after the apparatus connection electric wire is bent.

Explanation of symbols

１Ａ，１Ｂ装置間接続電線（太径の電線）
２Ａ，２Ｂ曲げ部
４インバータ
６電動モータ
１１電線本体
１２中心導体
１３絶縁被覆
１４絶縁被覆除去部
１８絶縁材（蛇腹管）
１９熱収縮チューブ
２１接続端子
２２絶縁材（プロテクタ）
２４止水材
１１４絶縁被覆切込部 1A, 1B Connection wire between devices (thick wire)
2A, 2B Bent part 4 Inverter 6 Electric motor 11 Electric wire body 12 Central conductor 13 Insulation coating 14 Insulation coating removal part 18 Insulating material (bellows tube)
19 Heat Shrink Tube 21 Connection Terminal 22 Insulation Material (Protector)
24 Water stop material 114 Insulation coating notch

Claims

It has a wire body to electrically connect between devices,
The wire body is
A central conductor that extends along the longitudinal direction of the electric wire body and is located at the radial center of the electric wire body;
An insulation coating extending along the longitudinal direction while surrounding the central conductor in the circumferential direction and forming an outer surface of the electric wire body,
An inter-apparatus connection electric wire having a bent portion in at least one place in the longitudinal direction of the electric wire body,
The bent portion is an insulating coating removing portion in which the central conductor formed by peeling off at least a part of the insulating coating located in the bent portion in the circumferential direction of the electric wire main body is exposed from the electric wire main body , Injected into the gap between the bellows tube, which is superior in flexibility to the insulating coating covering the electric wire body over the circumferential direction of the electric wire body including the insulating coating removing part, and the bellows tube and the insulating coating removing part And a resin water stop material that cures after injection and seals the gap .

The inter-device connection electric wire according to claim 1, wherein the electric wire body is an aluminum electric wire having an aluminum conductor as the central conductor, or an aluminum alloy electric wire having an aluminum alloy conductor as the central conductor .