JP2006005982A - Corrugate tube - Google Patents

Corrugate tube Download PDF

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Publication number
JP2006005982A
JP2006005982A JP2004176851A JP2004176851A JP2006005982A JP 2006005982 A JP2006005982 A JP 2006005982A JP 2004176851 A JP2004176851 A JP 2004176851A JP 2004176851 A JP2004176851 A JP 2004176851A JP 2006005982 A JP2006005982 A JP 2006005982A
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Prior art keywords
tube
wire harness
inner tube
slit opening
corrugated tube
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JP2004176851A
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Japanese (ja)
Inventor
Masataka Koike
真登 小池
Koshi Nishina
鉱至 仁科
Atsushi Sugiyama
篤史 杉山
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Yazaki Corp
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Yazaki Corp
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Priority to JP2004176851A priority Critical patent/JP2006005982A/en
Publication of JP2006005982A publication Critical patent/JP2006005982A/en
Abandoned legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrugate tube capable of protecting a wire harness surely and preventing the wear or damage of the wire harness caused by the vibration of a vehicle. <P>SOLUTION: In the corrugate tube 30 composed of an inner tube 13 having a slit opening 12 extending in the axial direction with a width capable of inserting the wire harness 11 and exhibiting an arcuate cross-section intersecting the axis perpendicularly, and an outer tube 15 exhibiting the arcuate cross-section intersecting the axis perpendicularly and fitted over the inner tube 13 to cover the slit opening 12 thereof, the entirety or the inner circumferential surface of the inner tube 13 is formed of a material softer than the sheath of a wire composing the wire harness 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、内部にワイヤーハーネスを収容した状態で車両パネル等に配索されるコルゲートチューブに関する。   The present invention relates to a corrugated tube that is routed to a vehicle panel or the like with a wire harness housed inside.

従来のこの種のコルゲートチューブとしては、例えば図3及び図4に示すように、小径部1と大径部2とが軸線方向に交互に連続して形成された可撓性を有するジャバラ状の合成樹脂製チューブ3に、その長手方向に沿ってスリット開口部4を形成したものが一般的である。しかし、このようなコルゲートチューブでは、スリット開口部4を押し拡げてワイヤーハーネス5をチューブ内に挿入するため、図4に断面図にて示すように、ワイヤーハーネス5を構成する電線の外皮がスリット開口部4の開口縁部と接触して傷付くことがある。また、コルゲートチューブを曲げた場合、特にスリット開口部4に沿って曲げた場合に、スリット開口部4の開口幅が大きくなり、収容したワイヤーハーネス5が露出し、ワイヤーハーネス5の保護機能が損なわれるという問題もある。   As a conventional corrugated tube of this type, for example, as shown in FIGS. 3 and 4, a flexible bellows-like shape in which small-diameter portions 1 and large-diameter portions 2 are alternately and continuously formed in the axial direction. Generally, a synthetic resin tube 3 is formed with slit openings 4 along the longitudinal direction thereof. However, in such a corrugated tube, since the slit opening 4 is expanded and the wire harness 5 is inserted into the tube, as shown in the sectional view of FIG. The opening 4 may be damaged by coming into contact with the opening edge of the opening 4. Further, when the corrugated tube is bent, particularly when it is bent along the slit opening 4, the opening width of the slit opening 4 is increased, the accommodated wire harness 5 is exposed, and the protective function of the wire harness 5 is impaired. There is also a problem of being.

そこで、このような不具合を解決するために、図5及び図6に示すコルゲートチューブが提案されている(例えば、特許文献1参照)。このコルゲートチューブ10は、ワイヤーハーネス11を挿入可能な幅で軸線方向に延びるスリット開口部12を有し、軸線と直交する断面形状が円弧状を呈する内側チューブ13と、軸線と直交する断面形状が円弧状を呈し、内側チューブ13のスリット開口部12を覆うように内側チュープ13に被嵌される外側チュープ15とからなり、内側チューブ13のスリット開口部12を覆うように外側チューブ15を被嵌する構成となっている。また、内側チューブ13は小径部16と大径部17とが軸線方向に交互に配置された可撓性を有するジャバラ状の合成樹脂製チューブとされており、外側チューブ15も同様に、小径部18と大径部19とが軸線方向に交互に配置された可撓性を有するジャバラ状の合成樹脂製チューブとされている。   In order to solve such a problem, a corrugated tube shown in FIGS. 5 and 6 has been proposed (see, for example, Patent Document 1). The corrugated tube 10 has a slit opening 12 that extends in the axial direction with a width that allows the wire harness 11 to be inserted, and has an inner tube 13 that has an arcuate cross-sectional shape orthogonal to the axis, and a cross-sectional shape that is orthogonal to the axis. The outer tube 15 has an arc shape and is fitted to the inner tube 13 so as to cover the slit opening 12 of the inner tube 13. The outer tube 15 is fitted so as to cover the slit opening 12 of the inner tube 13. It is the composition to do. The inner tube 13 is a flexible bellows-like synthetic resin tube in which small-diameter portions 16 and large-diameter portions 17 are alternately arranged in the axial direction, and the outer tube 15 is similarly a small-diameter portion. A flexible bellows-like synthetic resin tube in which 18 and the large diameter portion 19 are alternately arranged in the axial direction is formed.

また、内側チューブ13には、その外周面のスリット開口部12と対向する位置に、外側チューブ15のスリット開口部14の縁部が当接して外側チューブ15の周方向への回転を規制する突起状の回転規制手段20が設けられており、これにより、外側チューブ15が不用意に回転して内側チューブ13のスリット開口部12が露出するのを防止することができる。   Further, the inner tube 13 has a protrusion that regulates the rotation of the outer tube 15 in the circumferential direction by contacting the edge of the slit opening 14 of the outer tube 15 at a position facing the slit opening 12 on the outer peripheral surface thereof. In this way, it is possible to prevent the outer tube 15 from rotating carelessly and the slit opening 12 of the inner tube 13 from being exposed.

このような構成のコルゲートチューブ10では、組み付けは、図6に示すように、内側チュープ13の内部にスリット開口部12を通じてワイヤーハーネス11を挿入して収容した後、内側チューブ13のスリット開口部12と外側チューブ15のスリット開口部14とを対向させて外側チューブ15を内側チューブ13に被嵌して行う。このとき、内側チューブ13のスリット開口部12は、ワイヤーハーネス11を余裕をもって挿入できるように幅広に形成されているため、ワイヤーハーネス11を構成する電線の外皮がスリット開口部12の縁部で傷付けられる危険性が大幅に低減する。また、コルゲートチューブ10を曲げた場合でも、各スリット開口12、14が開くことがないため、ワイヤーハーネス11の保護機能を損なうこともない。
特公平5−14497号公報(図1、図2)
In the corrugated tube 10 having such a configuration, as shown in FIG. 6, after assembling, the wire harness 11 is inserted into the inner tube 13 through the slit opening 12 and accommodated, and then the slit opening 12 of the inner tube 13. The outer tube 15 is fitted on the inner tube 13 with the slit opening 14 of the outer tube 15 facing each other. At this time, since the slit opening 12 of the inner tube 13 is formed wide so that the wire harness 11 can be inserted with a margin, the outer sheath of the electric wire constituting the wire harness 11 is damaged at the edge of the slit opening 12. The risk of being lost is greatly reduced. Further, even when the corrugated tube 10 is bent, the slit openings 12 and 14 do not open, so that the protection function of the wire harness 11 is not impaired.
Japanese Patent Publication No. 5-14497 (FIGS. 1 and 2)

上記のコルゲートチューブ10では、ワイヤーハーネス11を保護することを目的に、内側チューブ13及び外側チューブ15共に比較的硬い樹脂材料(一般的にはポリプロピレン組成物)で形成されている。そのため、車両の振動に伴ってコルゲートチューブ10内のワイヤーハーネス11が振動すると、ワイヤーハーネス11がコルゲートチューブ10の内周面、特に内側チューブ13の小径部16の内周面と衝突して各電線の外皮が摩耗、損傷して品質が低下するという問題がある。   In the corrugated tube 10, the inner tube 13 and the outer tube 15 are both formed of a relatively hard resin material (generally a polypropylene composition) for the purpose of protecting the wire harness 11. Therefore, when the wire harness 11 in the corrugated tube 10 vibrates with the vibration of the vehicle, the wire harness 11 collides with the inner peripheral surface of the corrugated tube 10, particularly the inner peripheral surface of the small-diameter portion 16 of the inner tube 13. There is a problem that the quality of the outer skin is deteriorated due to wear and damage.

本発明はこのような問題を解決するためになされたものであり、ワイヤーハーネスを確実に保護するとともに、車両の振動に起因するワイヤーハーネスの摩耗、損傷を防止できるコルゲートチューブを提供することを目的とする。   The present invention has been made to solve such problems, and it is an object of the present invention to provide a corrugated tube capable of reliably protecting a wire harness and preventing wear and damage of the wire harness due to vehicle vibration. And

上記目的を達成するために、本発明は、ワイヤーハーネスを挿入可能な幅で軸線方向に延びるスリット開口部を有し、軸線と直交する断面形状が円弧状を呈する内側チューブと、軸線と直交する断面形状が円弧状を呈し、内側チューブのスリット開口部を覆うように該内側チュープに被嵌される外側チュープとから構成されるコルゲートチューブにおいて、内側チューブの全体もしくはその内周面を、ワイヤーハーネスを構成する電線の外皮よりも軟質な材料で形成したことを特徴とする。   In order to achieve the above-mentioned object, the present invention has a slit opening extending in the axial direction with a width capable of inserting a wire harness, an inner tube in which a cross-sectional shape orthogonal to the axis exhibits an arc shape, and orthogonal to the axis In a corrugated tube having an arcuate cross section and an outer tube fitted on the inner tube so as to cover the slit opening of the inner tube, the entire inner tube or its inner peripheral surface is connected to the wire harness. It is characterized in that it is made of a material softer than the outer sheath of the electric wire constituting the wire.

本発明のコルゲートチューブは、ワイヤーハーネスを傷付けることなく収容でき、しかも車両の振動に伴ってワイヤーハーネスが振動してもワイヤーハーネスを構成する電線の外皮が摩耗したり、損傷することがない。更に、如何様に曲げてもスリット開口部が開口せず、ワイヤーハーネスが露出することもない。   The corrugated tube of the present invention can be accommodated without damaging the wire harness, and even if the wire harness vibrates with the vibration of the vehicle, the outer sheath of the electric wire constituting the wire harness is not worn or damaged. Furthermore, no matter how it bends, the slit opening does not open and the wire harness is not exposed.

以下、本発明に関して図面を参照して説明する。図1は本発明のコルゲートチューブの一実施形態を示す全体斜視図、図2は内側チューブと外側チューブとの結合方法を説明するための図である。   Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is an overall perspective view showing an embodiment of a corrugated tube of the present invention, and FIG. 2 is a view for explaining a method of joining an inner tube and an outer tube.

図1及び図2に示すように、本発明のコルゲートチューブ30は、構造的には図5及び図6で説明したコルゲートチューブ10と同様であり、内側チューブ13と外側チューブ15とで構成される。尚、各部の寸法、例えば、内側チューブ13のスリット開口部12の幅、小径部16及び大径部17の直径、外側チューブ15のスリット開口部14の幅、小径部18及び大径部19の直径等については、収容されるワイヤーハーネス11に応じて適否設定される。また、外側チューブ15の周方向への回転を規制するために、内側チューブ13の外周面のスリット開口部12と対向する位置に、円弧状の突起からなる回転規制手段20が形成されている。   As shown in FIGS. 1 and 2, the corrugated tube 30 of the present invention is structurally similar to the corrugated tube 10 described in FIGS. 5 and 6, and includes an inner tube 13 and an outer tube 15. . The dimensions of each part, for example, the width of the slit opening 12 of the inner tube 13, the diameters of the small diameter part 16 and the large diameter part 17, the width of the slit opening 14 of the outer tube 15, the small diameter part 18 and the large diameter part 19 The diameter and the like are set appropriately according to the wire harness 11 to be accommodated. Further, in order to regulate the rotation of the outer tube 15 in the circumferential direction, a rotation regulating means 20 made of an arcuate protrusion is formed at a position facing the slit opening 12 on the outer circumferential surface of the inner tube 13.

本発明のコルゲートチューブ30は、内側チューブ13の全体あるいはその内周面を、ワイヤーハーネス11を構成する電線の外皮よりも軟質な材料で形成することを特徴としている。自動車用の電線として使用されているPVC電線は、JIS K7215で規定される硬度でHDD45〜90が使用され、特にHDD50〜60が一般的である。また、ホリオレフィン系の樹脂組成物で外皮を形成した電線では、JIS K7215で規定される硬度でHDD50〜90が使用され、特にHDD65〜70が一般的である。そこで、本発明では、内側チューブ13の全体あるいはその内周面を、JIS K7215で規定される硬度でHDA80〜HDD45、好ましくはHDD30〜40とする。   The corrugated tube 30 of the present invention is characterized in that the entire inner tube 13 or the inner peripheral surface thereof is formed of a material softer than the outer sheath of the electric wire constituting the wire harness 11. As the PVC electric wires used as electric wires for automobiles, HDDs 45 to 90 are used with a hardness specified by JIS K7215, and HDDs 50 to 60 are particularly common. Further, in the case of an electric wire having a sheath formed of a polyolefin resin composition, HDDs 50 to 90 are used with a hardness defined by JIS K7215, and HDDs 65 to 70 are particularly common. Therefore, in the present invention, the entire inner tube 13 or its inner peripheral surface is made HDA 80 to HDD 45, preferably HDD 30 to 40, according to the hardness defined by JIS K7215.

このような硬度とするには、成形材料や成形条件を適宜選択すればよく、例えば、ポリプロピレンにエチレンプロピレンゴムまたはスチレン系エラストマー等を添加したものを用いることができる。また、ゴム材料を用いることによっても、目的の硬度を達成することができる。また、内側チューブ13の内周面のみを上記の硬度とするには、上記の成形材料で内層を成形し、外層を従来のポリプロピレンで成形して両層と接合すればよい。   In order to obtain such hardness, a molding material and molding conditions may be appropriately selected. For example, a material obtained by adding ethylene propylene rubber or styrene elastomer to polypropylene can be used. The desired hardness can also be achieved by using a rubber material. Moreover, in order to make only the inner peripheral surface of the inner tube 13 have the above-mentioned hardness, it is only necessary to form the inner layer with the molding material described above, and to mold the outer layer with conventional polypropylene and to join both layers.

尚、外側チューブ15については制限がなく、従来と同様にポリプロピレンを成形して、コルゲートチューブとして一般的な硬度であるJIS K7215でHDD50〜90、好ましくはHDD60〜70とすればよい。   The outer tube 15 is not limited. Polypropylene is molded in the same manner as in the past, and JIS K7215, which is a general hardness for a corrugated tube, may be HDD 50 to 90, preferably HDD 60 to 70.

本発明のコルゲートチューブ30は、上記の構成により、車両の振動によりワイヤーハーネス11が振動した場合でも、内側チューブ13が軟質材料からなるため、電線の外皮の摩耗や損傷を防止することができる。また、如何様に曲げてもスリット開口部12、14が開口することがないため、ワイヤーハーネス11の保護機能が損なわれることもない。   The corrugated tube 30 of the present invention can prevent wear and damage to the outer sheath of the electric wire because the inner tube 13 is made of a soft material even when the wire harness 11 vibrates due to the vibration of the vehicle. Moreover, since the slit opening parts 12 and 14 do not open no matter how they are bent, the protective function of the wire harness 11 is not impaired.

以下に実施例及び比較例を挙げて更に説明するが、本発明はこれにより何ら制限されるものではない。
(試験用コルゲートチューブの作製)
図1及び図2に示したように、それぞれスリット開口部を有する内側チューブと外側チューブとから構成されるコルゲートチューブを作製した。その際、本発明品については、内側チューブをJIS K7215で規定される硬度でHDD35のポリプロピレン製とし、外側チューブをJIS K7215で規定される硬度でHDD70のポリプロピレン製とした。また、比較用に、内側チューブ及び外側チューブともにJIS K7215で規定される硬度でHDD70のポリプロピレン製コルゲートチューブを作製した。
The present invention will be further described below with reference to examples and comparative examples, but the present invention is not limited thereby.
(Production of test corrugated tube)
As shown in FIG.1 and FIG.2, the corrugated tube comprised from the inner side tube and outer side tube which each have a slit opening part was produced. At that time, for the product of the present invention, the inner tube was made of HDD35 polypropylene with the hardness specified by JIS K7215, and the outer tube was made of HDD70 polypropylene with the hardness specified by JIS K7215. For comparison, a polypropylene corrugated tube of HDD70 was manufactured with a hardness specified by JIS K7215 for both the inner tube and the outer tube.

(耐久性試験)
上記で作製した各コルゲートチューブに、ポリエチレン製の外皮(JIS K7215で規定される硬度でHDD50)を有する外径20mmの電線を19本束ねたワイヤーハーネスを収容し、外部から50Hzの振動を300時間連続して加えた。そして、振動を止めて内部の電線を取り出し、外皮の状態を目視にて観察した。
(Durability test)
Each corrugated tube produced above accommodates a wire harness in which 19 wires with an outer diameter of 20 mm having a polyethylene outer sheath (HDD 50 according to JIS K7215) are bundled, and a vibration of 50 Hz is externally applied for 300 hours. Added continuously. And the vibration was stopped, the internal electric wire was taken out, and the state of the outer skin was visually observed.

その結果、内側チューブを軟質とした本発明品では電線の表皮に殆ど摩耗や損傷が見られなかったのに対し、比較用のコルゲートチューブでは電線の表皮に多数の摩耗傷が付いていた。   As a result, in the product of the present invention in which the inner tube was soft, there was almost no wear or damage on the skin of the electric wire, whereas in the corrugated tube for comparison, there were many wear scratches on the skin of the electric wire.

本発明のコルゲートチューブの一実施形態を示す全体斜視図である。It is a whole perspective view showing one embodiment of the corrugated tube of the present invention. 図1のコルゲートチューブの内側チューブと外側チューブとの結合方法を説明するための図である。It is a figure for demonstrating the coupling | bonding method of the inner tube and outer tube of the corrugated tube of FIG. 従来のコルゲートチューブを説明するための図である。It is a figure for demonstrating the conventional corrugated tube. 図3のコルゲートチューブ内にワイヤーハーネスを挿入する際の不具合を説明するための断面図である。It is sectional drawing for demonstrating the malfunction at the time of inserting a wire harness in the corrugated tube of FIG. 従来の他のコルゲートチューブを説明するための全体斜視図である。It is a whole perspective view for demonstrating the other conventional corrugated tube. 図5のコルゲートチューブの内側チューブと外側チューブとの結合方法を説明するための図である。It is a figure for demonstrating the coupling | bonding method of the inner side tube and outer side tube of the corrugated tube of FIG.

符号の説明Explanation of symbols

11 ワイヤーハーネス
12 スリット開口部
13 内側チューブ
14 スリット開口部
15 外側チューブ
20 突起(回転規制手段)
30 コルゲートチューブ
11 Wire harness 12 Slit opening 13 Inner tube 14 Slit opening 15 Outer tube 20 Protrusion (rotation restricting means)
30 Corrugated tube

Claims (3)

ワイヤーハーネスを挿入可能な幅で軸線方向に延びるスリット開口部を有し、軸線と直交する断面形状が円弧状を呈する内側チューブと、軸線と直交する断面形状が円弧状を呈し、内側チューブのスリット開口部を覆うように該内側チュープに被嵌される外側チュープとから構成されるコルゲートチューブにおいて、
内側チューブの全体もしくはその内周面を、ワイヤーハーネスを構成する電線の外皮よりも軟質な材料で形成したことを特徴とするコルゲートチューブ。
A slit opening that extends in the axial direction with a width that allows the wiring harness to be inserted, and has an inner tube that has an arcuate cross section perpendicular to the axis, and an inner tube that has an arcuate cross section perpendicular to the axis. In a corrugated tube composed of an outer tube fitted on the inner tube so as to cover the opening,
A corrugated tube characterized in that the entire inner tube or its inner peripheral surface is formed of a material softer than the outer sheath of the electric wire constituting the wire harness.
内側チューブを外側チューブに挿入した際に、外側チューブの回転を規制する回転規制手段を備えることを特徴とする請求項1記載のコルゲートチューブ。   The corrugated tube according to claim 1, further comprising a rotation restricting means for restricting the rotation of the outer tube when the inner tube is inserted into the outer tube. 回転規制手段が、内側チューブの外周面のスリット開口部と対向する位置に突設された突起であることを特徴とする請求項2記載のコルゲートチューブ。   The corrugated tube according to claim 2, wherein the rotation restricting means is a protrusion protruding from a position facing the slit opening on the outer peripheral surface of the inner tube.
JP2004176851A 2004-06-15 2004-06-15 Corrugate tube Abandoned JP2006005982A (en)

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Cited By (4)

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JP2011223743A (en) * 2010-04-09 2011-11-04 Sumitomo Wiring Syst Ltd Electric wire protector
JP2015192460A (en) * 2014-03-27 2015-11-02 住友電装株式会社 Corrugate tube and electric wire module
JP2015201953A (en) * 2014-04-08 2015-11-12 住友電装株式会社 corrugated tube and wire module
CN112310919A (en) * 2020-11-25 2021-02-02 国网山东省电力公司广饶县供电公司 Overhead cable protection device and construction method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011223743A (en) * 2010-04-09 2011-11-04 Sumitomo Wiring Syst Ltd Electric wire protector
JP2015192460A (en) * 2014-03-27 2015-11-02 住友電装株式会社 Corrugate tube and electric wire module
JP2015201953A (en) * 2014-04-08 2015-11-12 住友電装株式会社 corrugated tube and wire module
CN112310919A (en) * 2020-11-25 2021-02-02 国网山东省电力公司广饶县供电公司 Overhead cable protection device and construction method thereof
CN112310919B (en) * 2020-11-25 2021-11-05 国网山东省电力公司广饶县供电公司 Overhead cable protection device and construction method thereof

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