JP2009143326A - Method for forming wiring harness of three-dimensional posture, wiring harness of three-dimensional posture formed by the method, sheathing protective material for wiring harness and method for manufacturing the sheathing protective material - Google Patents

Method for forming wiring harness of three-dimensional posture, wiring harness of three-dimensional posture formed by the method, sheathing protective material for wiring harness and method for manufacturing the sheathing protective material Download PDF

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JP2009143326A
JP2009143326A JP2007321304A JP2007321304A JP2009143326A JP 2009143326 A JP2009143326 A JP 2009143326A JP 2007321304 A JP2007321304 A JP 2007321304A JP 2007321304 A JP2007321304 A JP 2007321304A JP 2009143326 A JP2009143326 A JP 2009143326A
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pipe
wire harness
protective material
tube portion
bellows tube
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Shuichi Kanekawa
収一 金川
Masanori Kuwabara
正紀 桑原
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Sumitomo Wiring Systems Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize and simplify a die and a forming facility for forming a sheathing protective material to reduce cost and promptly respond to a design change for changing an arrangement route of a wiring harness, when forming the wiring harness protected by the sheathing protective material and arranged in a vehicle in the three-dimensional posture. <P>SOLUTION: The sheathing protective material comprises an integrally molded product formed of hard resin and continuously having pipes which surround the wiring harness and comprise straight pipes and bellows pipes. The bellows pipes are arranged between the straight pipes in regions which become bent positions when the wiring harness is arranged in the vehicle. After the wiring harness is made to penetrated the pipes of the sheathing protective material straight, the bellows pipes are bent to intended directions by a bender so as to arrange the wiring harness protected by the sheathing protective material to have a three-dimensional arrangement posture while the restoration of the thickness and the material quality of the pipes is made impossible. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、車両に配索する三次元姿勢のワイヤハーネスの形成方法、該方法で形成された三次元姿勢のワイヤハーネス、ワイヤハーネスの外装保護材および該外装保護材の製造方法に関に関するものである。   The present invention relates to a method of forming a three-dimensional posture wire harness to be routed on a vehicle, a three-dimensional posture wire harness formed by the method, a wire harness exterior protector, and a method of manufacturing the exterior protector. It is.

自動車に配索されるワイヤハーネスは、通常、車体パネルに沿って配索され、配索過程の各所で上下方向および左右方向に屈曲して、三次元姿勢で配索されている。
この種のワイヤハーネスを車体内部に配索する場合は、屈曲箇所を車体に固定するプロテクタに予め外装してワイヤハーネスを屈曲させたり、ワイヤハーネスに取り付けた車体係止用のクランプを車体に係止することで、ワイヤハーネスを所要の三次元姿勢で配索している。しかしながら、該構成とすると、ワイヤハーネスの各部に取り付けるプロテクタおよびクランプの個数が増加し、部品点数および取付工程が増加する問題がある。 A wire harness to be routed in an automobile is usually routed along a vehicle body panel, bent in a vertical direction and a horizontal direction at various points in the routing process, and routed in a three-dimensional posture.
When this type of wire harness is routed inside the vehicle body, the wire harness is bent by covering it with a protector that fixes the bent part to the vehicle body in advance, or a vehicle body locking clamp attached to the wire harness is engaged with the vehicle body. By stopping, the wire harness is routed in the required three-dimensional posture. However, with this configuration, there is a problem that the number of protectors and clamps attached to each part of the wire harness increases, and the number of parts and the attachment process increase.

前記問題に対して、ワイヤハーネスを予め配索姿勢の三次元姿勢に成形しておく成形ワイヤハーネスが特開平１１−３４５５２１号公報（特許文献１）等が提案されている。
前記特許文献１で提案された成形ワイヤハーネスは、図８に示す構成からなり、ワイヤハーネスの電線束１の湾曲部や分岐部を成形金型内にセットして樹脂成形部材２Ａ、２Ｂ、２Ｃを成形して取り付け、これら樹脂成形部材２Ａ〜２Ｃの間にある電線束１を捩ることで三次元姿勢としている。 Japanese Patent Laid-Open No. 11-345521 (Patent Document 1) and the like have been proposed as a molded wire harness in which the wire harness is molded in a three-dimensional attitude of a wiring attitude in advance.
The molded wire harness proposed in Patent Document 1 has the configuration shown in FIG. 8, and the resin molded members 2A, 2B, and 2C are set by setting the curved portion or branch portion of the wire bundle 1 of the wire harness in the molding die. Is formed and attached, and the wire bundle 1 between these resin molded members 2A to 2C is twisted to obtain a three-dimensional posture.

しかしながら、前記特許文献１の方法で三次元姿勢のワイヤハーネスを成形する場合、金型内にワイヤハーネスを構成する電線群の湾曲部や分岐部をセットする必要があり、作業工程が多くなる問題がある。   However, when a wire harness having a three-dimensional posture is formed by the method of Patent Document 1, it is necessary to set a bending portion or a branching portion of an electric wire group constituting the wire harness in a mold, which increases the number of work steps. There is.

一方、電気自動車またはハイブリッド自動車においては、バッテリと、インバータ、車輪駆動用モータ等の機器間を接続する高圧電線からなるワイヤハーネスを、車両のフロアパネル下部の床下に配索しており、該ワイヤハーネスもフロアパネルの下面に沿って三次元姿勢で配索する必要がある。
この床下配線するワイヤハーネスには、金属製のパイプで外装してワイヤハーネスを配索姿勢に保持している場合が多い。この場合、予め屈曲させたパイプにワイヤハーネスの電線束を挿通する作業は難作業となる。 On the other hand, in an electric vehicle or a hybrid vehicle, a wire harness composed of a battery and a high-voltage electric wire that connects devices such as an inverter and a wheel drive motor is routed under the floor below the floor panel of the vehicle. It is also necessary to route the harness in a three-dimensional posture along the lower surface of the floor panel.
In many cases, the wire harness that is wired under the floor is covered with a metal pipe and the wire harness is held in a wiring posture. In this case, it is difficult to insert the wire bundle of the wire harness into the pipe bent in advance.

特開平１１−３４５５２１号公報JP 11-345521 A

本発明は、前記問題に鑑みてなされたもので、特許文献１のような樹脂成形をする必要がなく、外装保護材で保護しながら簡単に三次元姿勢とすることを第１の課題としている。
また、三次元姿勢とすることができる外装保護材を簡単に製造でき、かつ、ワイヤハーネスの配索経路を変更する設計変更に対しても、迅速に対応可能とできるようにすることを第２の課題としている。 The present invention has been made in view of the above problems, and it is not necessary to perform resin molding as in Patent Document 1, and a first problem is to easily adopt a three-dimensional posture while protecting with an exterior protective material. .
Further, it is a second object of the present invention to be able to easily manufacture an exterior protective material that can be in a three-dimensional posture and to quickly respond to a design change that changes the wiring route of the wire harness. As an issue.

前記課題を解決するため、第１の発明として、車両に三次元に屈曲させて配索される外装保護材で保護されたワイヤハーネスの形成方法であって、
前記外装保護材は、ワイヤハーネスを包囲する直管部と蛇腹管部とを軸線方向に連続的に備えた硬質樹脂で一体成形されたパイプからなり、長さ方向に凸部と凹部が交互に連続するコルゲート状とした前記蛇腹管部は、前記ワイヤハーネスの車両配索時に屈曲位置となる領域に設けており、
前記外装保護材のパイプを真っすぐとした状態で前記ワイヤハーネスを貫通させた後に、前記蛇腹管部をベンダー機で所要方向に屈曲させ、該パイプの肉厚と材質とから復元不可として、該外装保護材で保護した前記ワイヤハーネスを三次元配索姿勢に賦形していることを特徴とする三次元姿勢のワイヤハーネスの形成方法を提供している。 In order to solve the above-mentioned problem, as a first invention, there is provided a method for forming a wire harness protected by an exterior protective material that is bent and arranged in a vehicle in three dimensions,
The exterior protective material is a pipe integrally formed of a hard resin having a straight pipe portion and a bellows pipe portion surrounding the wire harness continuously in the axial direction, and convex portions and concave portions are alternately arranged in the length direction. The bellows tube portion that has a continuous corrugated shape is provided in a region to be bent when the wire harness is routed in a vehicle,
After piercing the wire harness in a state where the pipe of the exterior protection material is straight, the bellows tube portion is bent in a required direction by a bender machine, and it cannot be restored from the thickness and material of the pipe. A method of forming a wire harness having a three-dimensional posture is provided, wherein the wire harness protected by a protective material is shaped into a three-dimensional routing posture.

前記のように、ワイヤハーネスを包囲する直管部とコルゲート状の蛇腹管部とからなるパイプを連続的に備えた一体成形品から外装保護材を形成し、ワイヤハーネスの車両配索時に前記蛇腹管部が屈曲位置となるように、前記蛇腹管部を直管部の間に配置している。 したがって、ワイヤハーネスの配索経路が長尺で、かつワイヤハーネスを三次元状に複雑に屈曲させて配索する必要がある場合でも、前記外装保護材の成形は、真っすぐな状態で成形しておき、前記真っすぐな状態のパイプにワイヤハーネス貫通し、貫通後にベンダー機で蛇腹管部を所要方向に屈曲させるだけで、きわめて容易に外装保護材およびワイヤハーネスを三次元配索姿勢に賦形することができる。
よって、従来のように、三次元状に屈曲させた外装保護材を射出成形によって成形する必要がなく、成形設備や金型を小型化、単純化して設備費や金型費等のコストを低減することができる。 As described above, an exterior protective material is formed from an integrally molded product continuously provided with a pipe composed of a straight pipe portion surrounding the wire harness and a corrugated bellows tube portion, and the bellows is arranged when the wire harness is routed in a vehicle. The bellows tube portion is disposed between the straight tube portions so that the tube portion is in a bent position. Therefore, even when the wiring route of the wire harness is long and it is necessary to bend and wire the wire harness in a complicated three-dimensional shape, the outer protective material is molded in a straight state. Then, the wire harness is passed through the straight pipe, and after the penetration, the bender machine is bent in the required direction by a bender machine, and the exterior protective material and the wire harness are shaped into a three-dimensional routing posture very easily. be able to.
Therefore, unlike the conventional case, there is no need to mold the exterior protective material bent in three dimensions by injection molding, and the molding equipment and molds can be downsized and simplified to reduce costs such as equipment costs and mold costs. can do.

また、前記のように、外装保護材のパイプのうち、屈曲させる部分をコルゲート状の蛇腹管部としているため、ベンダー機で任意の方向に曲げ加工することができる。したがって、ワイヤハーネスの配索経路を変更する設計変更が生じても、ベンダー機による蛇腹管部の屈曲方向を変更するだけでよいため、設計変更に対しても迅速に対応することができる。
さらに、前記のように、外装保護材のパイプを硬質樹脂から形成すると共に、ベンダー機による前記蛇腹管部の屈曲後は、屈曲前の状態に復元不可となるように前記パイプの肉厚および材質を選択しているため、パイプ内部のワイヤハーネスを所定の三次元姿勢に安定保持し、周辺部材との干渉を防いでワイヤハーネスを保護することができる。 In addition, as described above, the portion to be bent of the pipe of the exterior protective material is a corrugated bellows tube portion, and therefore can be bent in an arbitrary direction by a bender machine. Therefore, even if a design change that changes the wiring route of the wire harness occurs, it is only necessary to change the bending direction of the bellows tube portion by the bender machine, and thus it is possible to quickly cope with the design change.
Further, as described above, the pipe of the exterior protection material is formed from a hard resin, and after bending the bellows tube portion by the bender machine, the thickness and material of the pipe so that it cannot be restored to the state before the bending. Therefore, the wire harness inside the pipe can be stably held in a predetermined three-dimensional posture, and interference with peripheral members can be prevented and the wire harness can be protected.

ベンダー機で前記パイプの蛇腹管部を屈曲させる際、前記パイプを形成する硬質樹脂が熱可塑性樹脂で形成されている場合には、曲げ加工を容易化にするために屈曲位置となる蛇腹管部を加熱しながら屈曲させることが好ましい。加熱温度は前記パイプを形成する硬質樹脂の種類によっても異なるが、例えば、パイプの材質がポリプロピレンである場合には、加熱温度を９０℃〜１００℃度程度とすることが好ましい。   When bending the bellows tube portion of the pipe with a bender machine, if the hard resin forming the pipe is formed of a thermoplastic resin, the bellows tube portion that is the bending position in order to facilitate bending It is preferable to bend while heating. Although the heating temperature varies depending on the type of hard resin forming the pipe, for example, when the material of the pipe is polypropylene, the heating temperature is preferably about 90 ° C. to 100 ° C.

また、前記パイプの直管部の間に設ける蛇腹管部の位置や個数は、配索する特定車種の仕様に合わせて個別的に設定してもよいが、所定間隔をあけて蛇腹管部を予め多めに設けておき、各車種に汎用できるようにしておいてもよい。   In addition, the position and number of the bellows pipe portions provided between the straight pipe portions of the pipes may be individually set according to the specifications of the specific vehicle type to be routed, but the bellows pipe portions are spaced at predetermined intervals. A large number may be provided in advance so that it can be widely used for each vehicle type.

第２の発明として、前記第１の発明の方法で形成された三次元姿勢のワイヤハーネスを提供している。   As a second invention, a wire harness having a three-dimensional posture formed by the method of the first invention is provided.

前記外装保護材のパイプに貫通させて保護するワイヤハーネスは、ハイブリッド車両において高電圧バッテリとインバータとを接続する複数本の高圧ケーブルからなり、かつ、フロア下面に沿ってリア側からフロント側へと配索されるものであることが好ましい。   The wire harness that penetrates and protects the pipe of the exterior protection material includes a plurality of high-voltage cables that connect the high-voltage battery and the inverter in the hybrid vehicle, and from the rear side to the front side along the floor lower surface. It is preferable that it is routed.

ハイブリッド車両においては、通常、高電圧バッテリがリア側に配置される一方、前記高圧バッテリの直流電流とモータや発電機の交流電流を相互に変換するインバータがフロント側に配置される。前記高電圧バッテリとインバータとを接続する複数本の高圧ケーブルは、フロア下面に沿ってリア側とフロント側との間に、全長３ｍ程度の長尺な配索経路で配索され、かつ、フロア下面に沿って三次元状姿勢で配索される。
このような長尺で、三次元姿勢で配索される前記複数本の高圧ケーブルに前記構成の外装保護材のパイプを外装することにより、周辺部材との干渉を防いで高圧ケーブルの安全性を高めることができ、かつ、金属製パイプを用いる場合と比較して軽量化およびコスト低下を図ることができると共に容易に三次元姿勢とすることができる。
さらに、高圧ケーブルの配索経路を変更する設計変更に対しても、ベンダー機により蛇腹管部の屈曲方向を適宜変更することができるため、迅速に対応することできる。 In a hybrid vehicle, a high-voltage battery is usually arranged on the rear side, while an inverter that mutually converts the DC current of the high-voltage battery and the AC current of the motor or generator is arranged on the front side. The plurality of high-voltage cables connecting the high-voltage battery and the inverter are routed along the bottom surface of the floor between the rear side and the front side by a long routing route having a total length of about 3 m, and the floor It is routed in a three-dimensional posture along the bottom surface.
By covering the plurality of high-voltage cables arranged in a three-dimensional attitude with such a long pipe, the exterior protective material pipe having the above-described configuration prevents the interference with peripheral members and increases the safety of the high-voltage cable. In addition, the weight can be reduced and the cost can be reduced as compared with the case of using a metal pipe, and the three-dimensional posture can be easily achieved.
Furthermore, since the bending direction of the bellows tube portion can be changed as appropriate by the bender machine, it is possible to respond quickly to a design change that changes the routing path of the high-voltage cable.

前記外装保護材のパイプは、オレンジ着色材が樹脂に配合され、高圧系であることを表示するオレンジ色を呈していることが好ましい。
直流６０Ｖ以上の高圧ケーブルは、米国自動車規格ＳＡＥ Ｊ１６７３により、オレンジ色に着色されることが規定され、オレンジ色を呈するケーブルは高圧系であるということが広く認知されている。したがって、前記のように、外装保護材のパイプにオレンジ着色材を配合してオレンジ色を呈するようにしておくことで、内部のケーブルが高圧系であることを明確に示して作業者に注意を喚起することができる。 It is preferable that the pipe of the exterior protection material has an orange color indicating that the orange coloring material is blended with the resin and is a high-pressure system.
A high voltage cable having a direct current of 60 V or more is specified to be colored orange by the American automobile standard SAE J1673, and it is widely recognized that a cable exhibiting an orange color is a high voltage system. Therefore, as described above, by adding orange coloring material to the pipe of the exterior protection material so as to exhibit an orange color, it clearly shows that the internal cable is a high-pressure system and pays attention to the operator. Can be aroused.

第３の発明として、車両に三次元状に屈曲させて配索されるワイヤハーネスに外装する外装保護材であって、ワイヤハーネスを包囲する直管部と蛇腹管部とからなるパイプを連続的に備えた硬質樹脂製の一体成形品からなり、長さ方向に凸部と凹部が交互に連続するコルゲート状の前記蛇腹管部は、前記ワイヤハーネスの車両配索時に屈曲位置となる領域に前記直管部の間に予め設けられており、
前記パイプは、塩化ビニル樹脂、ポリプロピレン樹脂またはナイロン樹脂からなる熱可塑性樹脂で成形され、前記パイプの肉厚は１．５ｍｍ以上３ｍｍ以下とされていることを特徴とするワイヤハーネスの外装保護材を提供している。 According to a third aspect of the present invention, there is provided an exterior protective material for covering a wire harness that is bent and routed three-dimensionally in a vehicle, and a pipe comprising a straight tube portion and a bellows tube portion surrounding the wire harness is continuously provided. The corrugated bellows tube portion in which the convex portion and the concave portion are alternately continuous in the length direction is formed in a region that is a bending position when the wire harness is routed in the vehicle. It is provided in advance between the straight pipe parts,
The pipe is formed of a thermoplastic resin made of vinyl chloride resin, polypropylene resin or nylon resin, and the thickness of the pipe is 1.5 mm or more and 3 mm or less. providing.

前記のように、外装保護材のパイプを塩化ビニル樹脂、ポリプロピレン樹脂またはナイロン樹脂からなる熱可塑性樹脂で成形すると共に、パイプの肉厚を１．５ｍｍ以上３ｍｍ以下とすることにより、車両に配索されるワイヤハーネスの外装保護材として必要な強度と剛性を保持させることができ、特に、前記蛇腹管部をベンダー機を用いて所定方向に屈曲させた後は、ベンダー機を再度使用しない限り、屈曲前の状態に復元することができない程度の剛性を持たせることができるため、ワイヤハーネスを所定の三次元姿勢にしっかり保持することができる。   As mentioned above, the pipe of the exterior protection material is molded with a thermoplastic resin made of vinyl chloride resin, polypropylene resin or nylon resin, and the thickness of the pipe is set to 1.5 mm or more and 3 mm or less, so that it is routed to the vehicle. The strength and rigidity required as an exterior protective material for the wire harness can be retained, in particular, after bending the bellows tube portion in a predetermined direction using a bender machine, unless the bender machine is used again, Since it is possible to provide the rigidity that cannot be restored to the state before bending, the wire harness can be firmly held in a predetermined three-dimensional posture.

また、前記外装保護材のパイプの曲げモーメントは１９Ｎ・ｍ以上２５Ｎ・ｍ以下としていることが好ましい。
前記パイプの曲げモーメントが１９Ｎ・ｍ未満である場合には、パイプの曲げモーメントが小さくなり過ぎてワイヤハーネスを所定の三次元姿勢に保持できなくなるおそれがある一方、前記パイプの曲げモーメントが２５Ｎ・ｍを越えると曲げモーメントが大きくなり過ぎて蛇腹管部の屈曲が困難になるおそれがある。 Moreover, it is preferable that the bending moment of the pipe of the exterior protection material is 19 N · m or more and 25 N · m or less.
If the bending moment of the pipe is less than 19 N · m, the bending moment of the pipe becomes too small and the wire harness may not be held in a predetermined three-dimensional posture, while the bending moment of the pipe is 25 N · m. If it exceeds m, the bending moment becomes too large, and it may be difficult to bend the bellows tube.

また、前記パイプの長さはワイヤハーネスの配索長さに応じが１ｍ以上４ｍ以下程度である。
また、ワイヤハーネスの配索姿勢に応じるが、パイプの蛇腹管部は所要間隔をあけて２カ所以上設けられ、２カ所以上で屈曲される場合が多い。 The length of the pipe is about 1 m or more and 4 m or less depending on the wiring length of the wire harness.
Further, although depending on the wiring posture of the wire harness, the bellows tube portion of the pipe is often provided at two or more places with a required interval, and is often bent at two or more locations.

また、本発明の外装保護材のパイプは押出成形品からなることが好ましい
前記外装保護材のパイプを押出成形品から形成することで、外装保護材の製造コストを大幅に低減することができる。 Moreover, it is preferable that the pipe | tube of the exterior protection material of this invention consists of an extrusion molded product By forming the pipe of the said exterior protection material from an extrusion molded product, the manufacturing cost of an exterior protection material can be reduced significantly.

第４の発明として、前記押出成形品からなる外装保護材の製造方法を提供している。
該製造方法で用いる押出成形機は、それぞれ複数の金型を並設して循環輸送する上型機構と下型機構とを備え、前記金型は半円弧状の型面に凹凸を設けた蛇腹管部成形用金型と、前記凹凸を設けていない半円弧状の型面を設けた直管部成形用金型とからなり、
前記上下の蛇腹管部成形用金型同士および上下の直管部成形用金型同士を同期して、成形通路を対向させて搬送し、押出機から連続的に前記成形機の上下金型内のキャビティに樹脂材料を押し出すと共に該樹脂材料をブロー成形して蛇腹管部と直管部とを長さ方向に連続的に設けており、該方法で成形された前記パイプは前記蛇腹管部がベンダー機で屈曲されて、復元不可に屈曲姿勢が保持されるものとしている。 As a 4th invention, the manufacturing method of the exterior protection material which consists of the said extrusion molding product is provided.
The extrusion molding machine used in the manufacturing method includes an upper mold mechanism and a lower mold mechanism that circulate and transport a plurality of molds in parallel, and the mold is a bellows having a semicircular arc-shaped mold surface. It consists of a pipe part molding die and a straight pipe part molding die provided with a semicircular arc shaped mold surface that is not provided with the irregularities,
The upper and lower bellows tube molding dies and the upper and lower straight tube molding dies are synchronized with each other and conveyed with the molding passages facing each other, and continuously from the extruder in the upper and lower molds of the molding machine. The resin material is extruded into the cavity of the resin, and the resin material is blow-molded to continuously provide a bellows tube portion and a straight tube portion in the length direction, and the pipe formed by the method includes the bellows tube portion. It is assumed that the bending posture is maintained by being bent by a bender machine and cannot be restored.

前記のように、押出成形装置に、複数の金型を併設して循環輸送する上型機構と下型機構を設けると共に、上型機構と下型機構の前記金型を、半円弧状の型面に凹凸を設けた蛇腹管部成形用金型と、凹凸を設けていない半円弧状の型面を設けた直管部成形用金型とから構成している。したがって、前記上型機構および下型機構の循環によって、前記上下の蛇腹管部成形用金型同士および上下の直管部成形用金型同士を同期しながら順次成形通路に対向させて搬送することができ、対向位置に順次搬送されてくる上下の金型内のキャビティに、樹脂材料を押出機から連続的に押し出してブロー成形することにより、蛇腹管部と直管部を長さ方向に連続的に設けた外装保護材のパイプを製造することができる。   As described above, the extrusion molding apparatus is provided with an upper mold mechanism and a lower mold mechanism that circulate and transport a plurality of molds together, and the molds of the upper mold mechanism and the lower mold mechanism are formed into a semicircular arc mold. It is composed of a bellows tube part molding die provided with irregularities on the surface and a straight pipe part molding die provided with a semicircular arc shaped mold surface not provided with irregularities. Therefore, the upper and lower bellows tube molding dies and the upper and lower straight tube molding dies are sequentially conveyed while facing each other through the circulation of the upper mold mechanism and the lower mold mechanism in synchronization. The bellows tube part and the straight tube part are continuously stretched in the length direction by continuously extruding the resin material from the extruder into the cavities in the upper and lower molds that are sequentially conveyed to the opposing position. The pipe of the exterior protection material provided can be manufactured.

具体的には、例えば、対向位置に搬送されてきた上下の蛇腹管部成形用金型内のキャビティに、二重円筒状のダイスから溶融状態の樹脂材料をパイプ状に押し出してパリソンを形成すると共に、前記ダイスの中空部からキャビティ内へ突出させた空気導入管に設けた空気噴射穴から圧縮空気を前記パリソンに吹き付け、そのブロー圧によって前記パリソンを上下の蛇腹管部成形用金型面に密着させて蛇腹管部を成形することができる。上型機構および下型機構の循環によって前記上下の蛇腹管部成形用金型は成形された蛇腹管部を外方へ押し出しながら順次離間していくと共に、続いて対向位置に搬送されてきた直管部成形用金型内のキャビティにダイスから樹脂材料を連続的に押し出してブロー成形を行うことで、前記蛇腹管部に連続する直管部を成形することができる。この繰り返しによって蛇腹管部と直管部を長さ方向に連続的に設けた外装保護材のパイプを得ることができ、前記蛇腹管部をベンダー機で屈曲させることにより前記パイプを三次元姿勢に保持することができる。   Specifically, for example, a parison is formed by extruding a molten resin material into a pipe shape from a double cylindrical die into the cavities in the upper and lower bellows tube forming molds that have been conveyed to the opposite position. In addition, compressed air is blown to the parison from an air injection hole provided in an air introduction pipe protruding from the hollow portion of the die into the cavity, and the parison is applied to the upper and lower bellows pipe mold surfaces by the blow pressure. The bellows tube portion can be formed by closely contacting. The upper and lower bellows tube forming molds are sequentially separated by pushing the molded bellows tube portion outwardly by circulation of the upper die mechanism and the lower die mechanism, and then directly transferred to the opposite position. A straight pipe part continuous to the bellows pipe part can be formed by continuously extruding a resin material from a die into a cavity in a pipe part molding die and performing blow molding. By repeating this, it is possible to obtain a pipe of an exterior protection material in which the bellows tube portion and the straight tube portion are continuously provided in the length direction, and by bending the bellows tube portion with a bender machine, the pipe is brought into a three-dimensional posture. Can be held.

前述したように、本発明によれば、ワイヤハーネスを包囲する直管部とコルゲート状の蛇腹管部とからなるパイプを連続的に備えた一体成形品から外装保護材を形成し、ワイヤハーネスの車両配索時に前記蛇腹管部が屈曲位置となるように、前記蛇腹管部を直管部の間に配置している。よって、ワイヤハーネスの配索経路が長尺で、かつ、ワイヤハーネスを三次元状に複雑に屈曲させて配索する必要がある場合でも、前記外装保護材は真っすぐな状態で成形して、成形後、前記真っすぐな状態の一体成形品のパイプにワイヤハーネス貫通し、ベンダー機で前記蛇腹管部を所要方向に屈曲させるだけで、きわめて容易に外装保護材およびワイヤハーネスを三次元配索姿勢に賦形することができる。したがって、従来のように、三次元状に屈曲させた外装保護材を射出成形によって成形する必要がないため、成形設備や金型を小型化、単純化して設備費や金型費等のコストを低減することができる。   As described above, according to the present invention, an exterior protective material is formed from an integrally molded product continuously provided with a pipe composed of a straight pipe portion surrounding a wire harness and a corrugated bellows pipe portion. The bellows tube portion is disposed between the straight tube portions so that the bellows tube portion is in a bent position when the vehicle is routed. Therefore, even when the wiring route of the wire harness is long and it is necessary to wire the wiring harness in a complicated three-dimensional manner, the exterior protective material is formed in a straight state and molded. After that, the wire harness penetrates through the straight integrally formed pipe, and the bending bellows tube portion is bent in the required direction with a bender machine, so that the exterior protective material and the wire harness can be put into a three-dimensional routing posture very easily. Can be shaped. Therefore, there is no need to form a three-dimensional bent exterior protective material by injection molding as in the prior art, so molding equipment and molds can be downsized and simplified to reduce costs such as equipment costs and mold costs. Can be reduced.

また、前記のように、外装保護材のパイプのうち、屈曲させる部分をコルゲート状の蛇腹管部としているため、ベンダー機により任意の方向に屈曲させることができる。よって、ワイヤハーネスの配索経路を変更する設計変更に対しても、ベンダー機による蛇腹管部の屈曲方向を変更するだけで迅速に対応することができる。   Further, as described above, the portion to be bent of the pipe of the exterior protective material is a corrugated bellows tube portion, so that it can be bent in an arbitrary direction by a bender machine. Therefore, it is possible to quickly cope with a design change that changes the wiring route of the wire harness only by changing the bending direction of the bellows tube portion by the bender machine.

さらに、前記のように、外装保護材のパイプを硬質樹脂から形成すると共に、ベンダー機による前記蛇腹管部の屈曲後は、パイプの肉厚と材質によって屈曲前の状態に復元不可としているため、パイプ内部のワイヤハーネスを所定の三次元姿勢に安定保持し、周辺部材との干渉を防いでワイヤハーネスを保護することができる。   Furthermore, as described above, the outer protective material pipe is formed from a hard resin, and after bending the bellows tube portion by the bender machine, it is impossible to restore the state before bending due to the thickness and material of the pipe, The wire harness inside the pipe can be stably held in a predetermined three-dimensional posture, and interference with peripheral members can be prevented to protect the wire harness.

以下、本発明の実施形態を図面を参照して説明する。
図１乃至図７に本発明の実施形態を示す。
外装保護材（パイプ）１０は、図２に示すように、ハイブリッド車両２０のリア側に配置される高電圧バッテリ２１と、フロント側に配置されるインバータ２２とを接続する３本の高圧ケーブルからなるワイヤハーネスＷ／Ｈに外装するものであり、外装保護材１０で外装したワイヤハーネスＷ／Ｈをフロア下面に沿ってリア側からフロント側へと三次元姿勢で配索している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 7 show an embodiment of the present invention.
As shown in FIG. 2, the exterior protective material (pipe) 10 includes three high-voltage cables that connect a high voltage battery 21 disposed on the rear side of the hybrid vehicle 20 and an inverter 22 disposed on the front side. The wire harness W / H sheathed with the exterior protective material 10 is routed in a three-dimensional posture from the rear side to the front side along the lower surface of the floor.

外装保護材のパイプ１０は、図１に示すように、ワイヤハーネスＷ／Ｈを包囲する直管部１１と蛇腹管部１２を連続的に備えた一体成形品であり、直管部１１の間に設けられる蛇腹管部１２は、長さ方向に凸部と凹部を交互に連続させたコルゲート状を有し、ワイヤハーネスＷ／Ｈを車両に配索した時に屈曲位置となる領域に蛇腹管部１２を予め設けている。三次元姿勢のワイヤハーネスＷ／Ｈの形成は、図１（Ａ）に示すように真っすぐとした外装保護材のパイプ１０にワイヤハーネスＷ／Ｈを貫通させた後、パイプ１０の蛇腹管部１２をベンダー機（図示せず）で所要方向に屈曲させることにより、パイプ１０および内部のワイヤハーネスＷ／Ｈを三次元姿勢に賦形している［図１（Ｂ）参照］。   As shown in FIG. 1, the pipe 10 of the exterior protection material is an integrally formed product continuously including a straight pipe portion 11 and a bellows pipe portion 12 that surround the wire harness W / H. The bellows tube portion 12 provided in the corrugated tube portion 12 has a corrugated shape in which convex portions and concave portions are alternately continued in the length direction, and the bellows tube portion is located in a region to be bent when the wire harness W / H is routed to the vehicle. 12 is provided in advance. As shown in FIG. 1A, the wire harness W / H having a three-dimensional posture is formed by passing the wire harness W / H through a straight pipe 10 of the exterior protection material and then the bellows tube portion 12 of the pipe 10. Is bent in a required direction by a bender machine (not shown) to shape the pipe 10 and the internal wire harness W / H into a three-dimensional posture [see FIG. 1 (B)].

本実施形態においては、外装保護材のパイプ１０をポリプロピレン樹脂から成形し、パイプ１０の長さを３ｍ、肉厚を２ｍｍ、曲げモーメントを２０Ｎ・ｍとし、加熱温度９０℃〜１００℃度で加熱しながら前記ベンダー機でパイプ１０の蛇腹管部１２を屈曲させた後は、屈曲前の状態に復元不可としている。また、パイプ１０の材質となるポリプロピレン樹脂にオレンジ着色剤を配合し、高圧系であることを示すオレンジ色にパイプ１０を着色している。さらに、本実施形態においては、パイプ１０に蛇腹管部１２を所要間隔をあけて複数カ所設けている。蛇腹管部１２を設ける間隔や蛇腹管部１２の数、蛇腹管部１２の長さなどは配索する車種の仕様等に応じて適宜設定することができる。   In this embodiment, the pipe 10 of the exterior protection material is molded from polypropylene resin, the pipe 10 has a length of 3 m, a thickness of 2 mm, a bending moment of 20 N · m, and heated at a heating temperature of 90 ° C. to 100 ° C. However, after the bellows tube portion 12 of the pipe 10 is bent by the bender machine, the state before the bending cannot be restored. In addition, an orange colorant is blended in the polypropylene resin that is the material of the pipe 10, and the pipe 10 is colored orange indicating that it is a high-pressure system. Further, in the present embodiment, a plurality of bellows tube portions 12 are provided on the pipe 10 at a required interval. The interval at which the bellows tube portions 12 are provided, the number of the bellows tube portions 12, the length of the bellows tube portions 12, and the like can be appropriately set according to the specifications of the type of vehicle to be routed.

以下、外装保護材のパイプ１０の製造方法について説明する。
外装保護材のパイプ１０は、図３に示す押出機３１と成形機３２からなる押出成形機３０を用いて製造している。
成形機３２は、図４〜図７に示すように、複数の金型３３を並設して循環搬送する上型機構３２Ａと下型機構３２Ｂを備えており、上型機構３２Ａ、下型機構３２Ｂに並設している金型３３は、半円弧状の型面に凹凸を設けた蛇腹管部成形用金型３３Ａと、凹凸を設けていない半円弧の型面を設けた直管部成形用金型３３Ｂから構成している。上型機構３２Ａ、下型機構３２Ｂを矢印方向に循環させることで、上下の蛇腹管部成形用金型３３Ａ同士および上下の直管部成形用金型３３Ｂ同士を同期しながら順次成形通路３２Ｃに対向させて搬送している。
対向位置に順次搬送されてくる上下の蛇腹管部成形用金型３３Ａや直管部成形用金型３３Ｂ内のキャビティに、樹脂材料を押出機３１のダイス３４から連続的に押し出してブロー成形することにより、蛇腹管部１２と直管部１１を長さ方向に連続的に設けた外装保護材のパイプ１０を製造している。なお、樹脂材料は、ホッパ３５より押出機３１に供給され、押出機３１で溶融混練されたものである。 Hereinafter, the manufacturing method of the pipe 10 of the exterior protection material will be described.
The exterior protective material pipe 10 is manufactured by using an extruder 30 including an extruder 31 and a molding machine 32 shown in FIG.
As shown in FIGS. 4 to 7, the molding machine 32 includes an upper mold mechanism 32A and a lower mold mechanism 32B that circulate and convey a plurality of molds 33 in parallel, and the upper mold mechanism 32A and the lower mold mechanism. The mold 33 arranged side by side in 32B includes a bellows tube forming mold 33A having a semicircular arc-shaped mold surface provided with irregularities and a straight pipe part molding provided with a semicircular arc mold surface not provided with irregularities. It comprises a mold 33B for use. By circulating the upper die mechanism 32A and the lower die mechanism 32B in the direction of the arrow, the upper and lower bellows tube portion forming dies 33A and the upper and lower straight tube portion forming dies 33B are sequentially synchronized with the forming passage 32C. They are transported facing each other.
The resin material is continuously extruded from the die 34 of the extruder 31 into the cavities in the upper and lower bellows tube forming molds 33A and the straight tube portion forming mold 33B which are sequentially conveyed to the opposing positions, and blow-molded. Accordingly, the pipe 10 of the exterior protection material in which the bellows tube portion 12 and the straight tube portion 11 are continuously provided in the length direction is manufactured. The resin material is supplied from the hopper 35 to the extruder 31 and melted and kneaded by the extruder 31.

具体的には、例えば、図４および図７に示すように、対向位置に搬送されてきた上下の蛇腹管部成形用金型３３Ａ内のキャビティに、二重円筒状のダイス３４から溶融状態の樹脂材料を押し出してパリソンを形成すると共に、ダイス３４の中空部からキャビティ内へ突出させた空気導入管３６の長さ方向に沿って設けた空気噴射穴３７から圧縮空気を前記パリソンに吹き付け、そのブロー圧によって前記パリソンを冷却された上下の蛇腹管部成形用金型３３Ａ面に密着させて蛇腹管部１２を成形している。なお、空気導入管３６にはキャビティ内を密閉状態とするシール栓３８をダイス３４から所定間隔をあけて外嵌しており、ダイス３４からシール栓３８までのキャビティ内にのみ内圧がかかってブロー成形が行えるようにしている。   Specifically, for example, as shown in FIGS. 4 and 7, a melted state is obtained from a double cylindrical die 34 into a cavity in the upper and lower bellows tube forming molds 33 </ b> A that have been conveyed to the facing position. The resin material is extruded to form a parison, and compressed air is blown to the parison from an air injection hole 37 provided along the length direction of the air introduction pipe 36 projecting from the hollow portion of the die 34 into the cavity. The bellows tube portion 12 is formed by bringing the parison into close contact with the surfaces of the upper and lower bellows tube forming molds 33A cooled by the blow pressure. A seal plug 38 that seals the inside of the cavity is externally fitted to the air introduction pipe 36 at a predetermined interval from the die 34, and an internal pressure is applied only in the cavity from the die 34 to the seal plug 38 to blow. Molding can be performed.

図５に示すように、上型機構３２Ａおよび下型機構３２Ｂの循環によって、上下の蛇腹管部成形用金型３３Ａは、成形された蛇腹管部１２を外方に押し出しながら順次離間していくと共に、続いて対向位置に搬送されてきた直管部成形用金型３３Ｂやさらにその後の蛇腹管部成形用金型３３Ａ内のキャビティにダイス３４から樹脂材料を連続的に押し出してブロー成形を行っている。この繰り返しによって蛇腹管部１２と直管部１１を長さ方向に連続的に設けた押出成形品の外装保護材のパイプ１０を得ることができ、蛇腹管部１２をベンダー機で屈曲させることによりパイプ１０を三次元姿勢に保持することができる。    As shown in FIG. 5, the upper and lower bellows tube forming molds 33A are sequentially separated by pushing the formed bellows tube portion 12 outward by the circulation of the upper die mechanism 32A and the lower die mechanism 32B. At the same time, blow molding is performed by continuously extruding the resin material from the die 34 to the cavity in the straight pipe part molding die 33B and the subsequent bellows pipe part molding die 33A which have been conveyed to the opposite position. ing. By repeating this, it is possible to obtain a pipe 10 of an exterior protection material of an extruded product in which the bellows tube portion 12 and the straight tube portion 11 are continuously provided in the length direction, and by bending the bellows tube portion 12 with a bender machine The pipe 10 can be held in a three-dimensional posture.

前記のように、ワイヤハーネスＷ／Ｈを包囲する直管部１１とコルゲート状の蛇腹管部１２を連続的に備えた一体成形品から外装保護材のパイプ１０を形成し、ワイヤハーネスＷ／Ｈの車両配索時に蛇腹管部１２が屈曲位置となるように、蛇腹管部１２を直管部１１の間に配置している。
本実施形態のようにワイヤハーネスＷ／Ｈの配索経路がリア側からフロント側へと長尺で、かつワイヤハーネスＷ／Ｈを三次元状に複雑に屈曲させて配索する場合、成形された外装保護材のパイプ１０を真っすぐな状態としてワイヤハーネスＷ／Ｈを貫通し、ベンダー機で蛇腹管部１２を所要方向に屈曲させて、外装保護材１０およびワイヤハーネスＷ／Ｈを三次元配索姿勢に賦形している。 As described above, the pipe 10 of the exterior protection material is formed from an integrally molded product continuously including the straight tube portion 11 and the corrugated bellows tube portion 12 surrounding the wire harness W / H, and the wire harness W / H is formed. The bellows tube portion 12 is disposed between the straight tube portions 11 so that the bellows tube portion 12 is in a bent position when the vehicle is routed.
Molded when the wiring path of the wire harness W / H is long from the rear side to the front side and the wire harness W / H is bent in a three-dimensionally complicated manner as in the present embodiment. The outer protective pipe 10 is straightened and penetrates the wire harness W / H, and the bellows tube portion 12 is bent in a required direction by a bender machine, so that the outer protective material 10 and the wire harness W / H are arranged three-dimensionally. Shaped to the rope position.

本発明の前記外装保護材のパイプ１０では、屈曲させる部分をコルゲート状の蛇腹管部１２としているため、ベンダー機により任意の方向に屈曲させることができる。よって、ワイヤハーネスＷ／Ｈの配索経路を変更する設計変更に対しても、ベンダー機による蛇腹管部１２の屈曲方向を変更するだけで迅速に対応することができる。
さらに、前記のように、外装保護材のパイプ１０はベンダー機により蛇腹管部１２を屈曲させた後は屈曲前の状態に復元不可としているため、パイプ１０内部のワイヤハーネスＷ／Ｈを所定の三次元姿勢に安定保持し、周辺部材との干渉を防いでワイヤハーネスＷ／Ｈを保護することができる。
また、前記のように、外装保護材のパイプ１０にオレンジ着色材を配合してオレンジ色を呈するようにしておくことで、内部のケーブルが高圧系であることを明確に示して作業者に注意を喚起することができる。 In the pipe 10 of the exterior protection material according to the present invention, the portion to be bent is the corrugated bellows tube portion 12, so that it can be bent in any direction by a bender machine. Therefore, it is possible to respond quickly to a design change that changes the routing route of the wire harness W / H by simply changing the bending direction of the bellows tube portion 12 by the bender machine.
Further, as described above, since the pipe 10 of the exterior protection material cannot be restored to the state before bending after the bellows tube portion 12 is bent by the bender machine, the wire harness W / H inside the pipe 10 is set to a predetermined value. The wire harness W / H can be protected by stably maintaining a three-dimensional posture and preventing interference with peripheral members.
In addition, as described above, by adding an orange coloring material to the pipe 10 of the exterior protection material so as to exhibit an orange color, it is clearly indicated that the internal cable is a high-pressure system and attention is paid to the operator. Can be aroused.

（Ａ）は本実施形態の外装保護材のパイプの要部拡大図、（Ｂ）は外部保護材のパイプにワイヤハーネスを貫通させ、蛇腹管部をベンダー機で屈曲させた状態の要部拡大図である。(A) is an enlarged view of the main part of the pipe of the exterior protective material of the present embodiment, (B) is an enlarged view of the main part in a state where the wire harness is passed through the pipe of the external protective material and the bellows tube part is bent by the bender machine. FIG. 外装保護材で保護された高圧ケーブルをハイブリッド車両の高圧バッテリとインバータとの間に配索した概略図である。It is the schematic which wired the high voltage | pressure cable protected by the exterior protection material between the high voltage battery and the inverter of the hybrid vehicle. 本実施形態の押出成形機の構成図である。It is a block diagram of the extrusion molding machine of this embodiment. 上下の蛇腹管部成形用金型内のキャビティに樹脂材料を押し出してブロー成形している成形機の概略断面図である。It is a schematic sectional drawing of the molding machine which extrudes and blow-molds the resin material to the cavity in the upper and lower bellows tube part forming molds. 上下の直管部成形用金型内および次の蛇腹管部成形用金型内のキャビティに樹脂材料を押し出してブロー成形している成形機の概略断面図である。FIG. 3 is a schematic cross-sectional view of a molding machine in which a resin material is extruded into cavities in upper and lower straight pipe part molding dies and in the next bellows pipe part molding mold. （Ａ）は図５における上下の蛇腹管部成形用金型のＡ−Ａ断面図、（Ｂ）は上下の直管部成形用金型のＢ−Ｂ断面図である。(A) is AA sectional drawing of the upper and lower bellows pipe part shaping | molding metal mold | die in FIG. 5, (B) is BB sectional drawing of the upper and lower straight pipe part shaping | molding metal mold | die. 図４の要部拡大図である。It is a principal part enlarged view of FIG. 従来例を示す図である。It is a figure which shows a prior art example.

符号の説明Explanation of symbols

１０ 外装保護材（パイプ）
１１ 直管部
１２ 蛇腹管部
２０ ハイブリッド車両
２１ 高電圧バッテリ
２２ インバータ
３０ 押出成形機
３１ 押出機
３２ 成形機
３２Ａ 上型機構
３２Ｂ 下型機構
３３ 金型
３３Ａ 蛇腹管部成形用金型
３３Ｂ 直管部成形用金型
３４ ダイス
３５ ホッパ
３６ 空気導入管
３７ 空気噴射穴
３８ シール栓 10 Exterior protective material (pipe)
DESCRIPTION OF SYMBOLS 11 Straight pipe part 12 Bellows pipe part 20 Hybrid vehicle 21 High voltage battery 22 Inverter 30 Extruder 31 Extruder 32 Molding machine 32A Upper mold mechanism 32B Lower mold mechanism 33 Mold 33A Bellows pipe part molding die 33B Straight pipe part Mold for molding 34 Die 35 Hopper 36 Air introduction pipe 37 Air injection hole 38 Seal plug

Claims (9)

車両に三次元に屈曲させて配索される外装保護材で保護されたワイヤハーネスの形成方法であって、
前記外装保護材は、ワイヤハーネスを包囲する直管部と蛇腹管部とを軸線方向に連続的に備えた硬質樹脂で一体成形されたパイプからなり、長さ方向に凸部と凹部が交互に連続するコルゲート状とした前記蛇腹管部は、前記ワイヤハーネスの車両配索時に屈曲位置となる領域に設けており、
前記外装保護材のパイプを真っすぐとした状態で前記ワイヤハーネスを貫通させた後に、前記蛇腹管部をベンダー機で所要方向に屈曲させ、該パイプの肉厚と材質とから復元不可として、該外装保護材で保護した前記ワイヤハーネスを三次元配索姿勢に賦形していることを特徴とする三次元姿勢のワイヤハーネスの形成方法。 A method of forming a wire harness protected by an exterior protective material that is bent and arranged in a vehicle in three dimensions,
The exterior protective material is a pipe integrally formed of a hard resin having a straight pipe portion and a bellows pipe portion surrounding the wire harness continuously in the axial direction, and convex portions and concave portions are alternately arranged in the length direction. The bellows tube portion that has a continuous corrugated shape is provided in a region to be bent when the wire harness is routed in a vehicle,
After piercing the wire harness in a state where the pipe of the exterior protection material is straight, the bellows tube portion is bent in a required direction by a bender machine, and it cannot be restored from the thickness and material of the pipe. A method for forming a wire harness having a three-dimensional posture, wherein the wire harness protected by a protective material is shaped into a three-dimensional routing posture. 請求項１に記載の方法で形成された三次元姿勢のワイヤハーネス。   A wire harness having a three-dimensional posture formed by the method according to claim 1. 前記外装保護材のパイプに貫通させて保護するワイヤハーネスは、ハイブリッド車両において高電圧バッテリとインバータとを接続する複数本の高圧ケーブルからなり、かつ、フロア下面に沿ってリア側からフロント側へと配索されるものである請求項２に記載の三次元姿勢のワイヤハーネス。   The wire harness that penetrates and protects the pipe of the exterior protection material includes a plurality of high-voltage cables that connect the high-voltage battery and the inverter in the hybrid vehicle, and from the rear side to the front side along the floor lower surface. The wire harness having a three-dimensional posture according to claim 2, wherein the wire harness is arranged. 前記外装保護材のパイプは、オレンジ着色材が樹脂に配合され、高圧系であることを表示するオレンジ色を呈している請求項３に記載の三次元姿勢のワイヤハーネス。   The wire harness of the three-dimensional attitude | position of Claim 3 which exhibits the orange which displays that the orange coloring material is mix | blended with resin and the said pipe | tube of the said exterior protection material is a high voltage | pressure system. 車両に三次元状に屈曲させて配索されるワイヤハーネスに外装する外装保護材であって、ワイヤハーネスを包囲する直管部と蛇腹管部とを軸線方向に連続的に備えた硬質樹脂で一体成形されたパイプからなり、長さ方向に凸部と凹部が交互に連続するコルゲート状とした前記蛇腹管部は、前記ワイヤハーネスの車両配索時に屈曲位置となる領域に設けられており、
前記パイプは、塩化ビニル樹脂、ポリプロピレン樹脂またはナイロン樹脂からなる熱可塑性樹脂で成形され、前記パイプの肉厚は１．５ｍｍ以上３ｍｍ以下とされていることを特徴とするワイヤハーネスの外装保護材。 It is an exterior protective material that is externally attached to a wire harness that is bent and routed in a three-dimensional shape on a vehicle, and is a hard resin that continuously includes a straight tube portion and a bellows tube portion surrounding the wire harness in the axial direction. The bellows tube portion formed of a integrally formed pipe and having a corrugated shape in which convex portions and concave portions are alternately continuous in the length direction is provided in a region that is a bending position when the wire harness is routed in a vehicle,
The pipe is formed of a thermoplastic resin made of vinyl chloride resin, polypropylene resin, or nylon resin, and the thickness of the pipe is 1.5 mm or more and 3 mm or less. 前記パイプの曲げモーメントは１９Ｎ・ｍ以上２５Ｎ・ｍ以下である請求項５に記載のワイヤハーネスの外装保護材。   The wire harness exterior protective material according to claim 5, wherein a bending moment of the pipe is 19 N · m or more and 25 N · m or less. 前記パイプの長さは１ｍ以上４ｍ以下であり、前記蛇腹管部が所要間隔をあけて２カ所以上設けられている請求項５または請求項６に記載のワイヤハーネスの外装保護材。   The length of the said pipe is 1 m or more and 4 m or less, The exterior protective material of the wire harness of Claim 5 or 6 with which the said bellows pipe part is provided in two or more places with the required space | interval. 前記パイプは押出成形品からなる請求項５または請求項６のいずれか１項に記載の外装保護材。   The exterior protection material according to claim 5, wherein the pipe is made of an extrusion-molded product. 請求項７に記載の押出成形品からなる外装保護材の製造方法であって、
押出成形機は、それぞれ複数の金型を並設して循環輸送する上型機構と下型機構とを備え、前記金型は半円弧状の型面に凹凸を設けた蛇腹管部成形用金型と、前記凹凸を設けていない半円弧状の型面を設けた直管部成形用金型とからなり、
前記上下の蛇腹管部成形用金型同士および上下の直管部成形用金型同士を同期して、成形通路を対向させて搬送し、押出機から連続的に前記成形機の上下金型内のキャビティに樹脂材料を押し出すと共に該樹脂材料をブロー成形して蛇腹管部と直管部とを長さ方向に連続的に設けており、該方法で成形された前記パイプは前記蛇腹管部がベンダー機で屈曲されて、復元不可に屈曲姿勢が保持されるものとしている外装保護材の製造方法。 It is a manufacturing method of the exterior protection material which consists of an extrusion-molded article according to claim 7,
The extrusion molding machine includes an upper mold mechanism and a lower mold mechanism for circulating and transporting a plurality of molds in parallel, and the mold is a bellows tube molding mold having a semicircular arc-shaped mold surface provided with irregularities. A mold and a straight pipe part molding die provided with a semicircular arc shaped mold surface not provided with the unevenness,
The upper and lower bellows tube molding dies and the upper and lower straight tube molding dies are synchronized with each other and conveyed with the molding passages facing each other, and continuously from the extruder in the upper and lower molds of the molding machine. The resin material is extruded into the cavity of the resin, and the resin material is blow-molded to continuously provide a bellows tube portion and a straight tube portion in the length direction, and the pipe formed by the method includes the bellows tube portion. A method of manufacturing an exterior protective material that is bent by a bender machine and is maintained in a bending posture so that it cannot be restored.
JP2007321304A 2007-12-12 2007-12-12 Method for forming wiring harness of three-dimensional posture, wiring harness of three-dimensional posture formed by the method, sheathing protective material for wiring harness and method for manufacturing the sheathing protective material Abandoned JP2009143326A (en)

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