JP2004264901A - Successively patterned body, its manufacturing method, and cable - Google Patents

Successively patterned body, its manufacturing method, and cable Download PDF

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Publication number
JP2004264901A
JP2004264901A JP2003033733A JP2003033733A JP2004264901A JP 2004264901 A JP2004264901 A JP 2004264901A JP 2003033733 A JP2003033733 A JP 2003033733A JP 2003033733 A JP2003033733 A JP 2003033733A JP 2004264901 A JP2004264901 A JP 2004264901A
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JP
Japan
Prior art keywords
cable
holding member
rfid
longitudinal direction
inner diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003033733A
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Japanese (ja)
Inventor
Masashi Hara
昌志 原
Kazunaga Kobayashi
和永 小林
Satoru Shiobara
悟 塩原
Takeshi Osato
健 大里
Osamu Koyasu
修 子安
Yukiaki Tanaka
志明 田中
Takeshi Honjo
武史 本庄
Keiji Ohashi
圭二 大橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
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Fujikura Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP2003033733A priority Critical patent/JP2004264901A/en
Priority to PCT/JP2004/001421 priority patent/WO2004073130A1/en
Priority to TW093103208A priority patent/TW200425172A/en
Publication of JP2004264901A publication Critical patent/JP2004264901A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/56—Processes for repairing optical cables
    • G02B6/562—Processes for repairing optical cables locatable, e.g. using magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles

Abstract

<P>PROBLEM TO BE SOLVED: To provide a successively patterned body for cable which stores a large amount of information on the cable more than before, and has a little possibility that the stored information becomes unrecognizable when long hours have passed after the installation. <P>SOLUTION: The successively patterned body 1 is constituted such that it has a holding member 3 which is composed of a resin or a heat shrinkable member and is extended lengthwise, and a plurality of RFID (radio frequency identification) elements 5 which are wrapped around in and provided inside the holding member 3, the respective RFID elements 5 are disposed at intervals in the longitudinal direction of the holding member 3, and the inner diameter of the holding member 3 of a spot where the RFID element 5 is provided is larger than the inner diameter of the holding member 3 of a spot where the RFID element 5 is not provided. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、複数のＲＦＩＤ（Ｒａｄｉｏ Ｆｒｅｑｕｅｎｃｙ Ｉｄｅｎｔｉｆｉｃａｔｉｏｎ）素子を、長く延びた部材の長手方向に、間隔をあけて設けて構成された連長体、その製造方法及び上記連長体が設けられたケーブルに係り、特に、上記長く延びた部材の内径を長手方向で変えて、上記各ＲＦＩＤ素子を保持しているものに関する。
【０００２】
【従来の技術】
従来、たとえば、敷設されている多数のメタルケーブルや光ファイバケーブルの中から、目的とするケーブルのみを識別する方法として、上記各ケーブルの外皮（シース）表面に印字を施し、または上記各ケーブルにタグを取り付け、ケーブルを識別する方法が知られている。
【０００３】
ここで、上記印字は、製造者名、製造年月日、ケーブルの品名、ケーブルの長さ等の情報を、インクや熱転写レーザ等で、上記ケーブルの外皮表面に施すことによって行われている。また、上記タグには、上記印字されているものとほぼ同様な情報が、たとえば刻印されている。そして、上記タグは上記ケーブルの外皮に貼り付けられ、または上記ケーブルにたとえば金属線を用いて吊り下げられている。
【０００４】
ところで、ケーブル表面に印字をする場合、上記ケーブルの長手方向に沿って印字がされるため、文字数が多くなると、敷設されているケーブルを長い区間にわたって露出させる必要がある。しかし、上記ケーブルが、たとえば、トラフ内に敷設され、このトラフに蓋がされていると、上記蓋を長い区間にわたって取り外す必要があり、さらに上記トラフが土砂の中に埋設されている場合、上記土砂を長い区間にわたって取り除く必要があり、上記ケーブルを露出させるために多大な工数が必要になる。
【０００５】
そこで、上記印字をする場合、上記ケーブルの長手方向に沿ってされる印字の長さを極力短くすることが望ましいが、このように印字の長さを制限すると、上記ケーブルに関して必要な情報の総てを、上記ケーブルの外皮に印字することが困難であるという問題がある。
【０００６】
また、上記ケーブルの外皮表面に印字された文字や記号等の、上記ケーブルに関する情報は、長い期間の経過や、たとえばケーブル設置時の擦り等によって、かすれたり消えてしまい判読不可能になる場合があるという問題がある。
【０００７】
さらに、タグを上記ケーブルに設ける場合、長尺のケーブルに一定の間隔で、タグを多数個設けなければならず、タグを設ける際の工数がかかり、また、上記印字をする場合と同様に、タグに多くの情報を書き込むことは困難であり、さらに、上記ケーブルに設けたタグがケーブルから離脱し、またはタグに記載されている情報が時間の経過とともに、かすれたり消えてしまい判読不可能になる場合があるという問題がある。
【０００８】
そこで、上述のようなケーブル外皮表面への印字やタグに代えて、ケーブル外皮表面に、たとえば、ＱＲコード（二次元バーコード）を貼り付けた構成のケーブルが開示されている（たとえば特許文献１）。
【０００９】
【特許文献１】
特開２００１−２１７３０号公報
【００１０】
【発明が解決しようとする課題】
ところで、上記特許文献１に示すケーブルによれば、このケーブルに関する情報がＱＲコード化されているので、上述のように印字やタグを使用する場合よりも、上記ケーブルに関する情報を大量に格納することができる。
【００１１】
しかし、上記ＱＲコード化された情報は、上記ケーブルの表面に設けられているので、上述のように印字をした場合と同様に、長い期間の経過や、たとえばケーブル設置時の擦り等によって、かすれたり消えてしまい、またはケーブル表面からはがれてしまい判読不可能になる場合があるという問題がある。
【００１２】
本発明は、上記問題点に鑑みてなされたものであり、ケーブルに関する情報を従来よりも多量に格納可能であり、設置後長時間が経過しても上記格納している情報が判別不可能となるおそれが少ないケーブルおよびこのケーブルへの設置が容易な連長体およびこの製造方法を提供することを目的とする。
【００１３】
【課題を解決するための手段】
請求項１に記載の本発明は、樹脂または熱収縮部材で構成され、長く延びた保持部材と、上記保持部材に包み込まれて、上記保持部材内部に設けられた複数のＲＦＩＤ素子とを有し、上記各ＲＦＩＤ素子同士は上記保持部材の長手方向で間隔をあけて配置され、上記ＲＦＩＤ素子が設けられている箇所の上記保持部材の内径を上記ＲＦＩＤ素子が設けられていない箇所の上記保持部材の内径よりも大きく構成することによって、上記各ＲＦＩＤ素子の上記保持部材長手方向への移動を規制している連長体である。
【００１４】
請求項２に記載の本発明は、ケーブルコアと、樹脂または熱収縮部材で構成され、長く延びた保持部材と、上記保持部材に包み込まれて、上記保持部材内部に設けられた複数のＲＦＩＤ素子とを具備し、上記各ＲＦＩＤ素子同士は上記保持部材の長手方向で間隔をあけて配置され、上記ＲＦＩＤ素子が設けられている箇所の上記保持部材の内径を、上記ＲＦＩＤ素子が設けられていない箇所の上記保持部材の内径よりも大きく構成することによって、上記各ＲＦＩＤ素子の上記保持部材長手方向への移動を規制していると共に、上記ケーブルコアに一体的に設けられた連長体と、上記ケーブルコアと上記連長体とを被覆しているシースとを有するケーブルである。
【００１５】
請求項３に記載の本発明は、長く延びた保持部材とこの保持部材内に設けられた複数のＲＦＩＤ素子とによって構成される連長体の製造方法において、上記各ＲＦＩＤ素子を、ガスの圧力で押し出し、被覆加工に使用する押し出しヘッド内へ間歇的に送り込むと共に、上記押し出しヘッド内で、上記保持部材を構成する樹脂によって上記各ＲＦＩＤ素子に対して押し出し被覆加工を施し、上記各ＲＦＩＤ素子の上記保持部材長手方向への移動を規制するために、上記ＲＦＩＤ素子が設けられている箇所の上記保持部材の内径を、上記ＲＦＩＤ素子が設けられていない箇所の上記保持部材の内径よりも大きく構成する連長体の製造方法である。
【００１６】
請求項４に記載の本発明は、長く延びたパイプ状部材とこのパイプ状部材内に設けられた複数のＲＦＩＤ素子とによって構成される連長体の製造方法において、熱収縮性部材で構成された上記パイプ状部材内に、上記各ＲＦＩＤ素子を、間隔をあけて挿入配置する挿入配置工程と、上記各ＲＦＩＤ素子を保持するまで、上記パイプ状部材を加熱して上記パイプ状部材を収縮させる加熱工程とを有する連長体の製造方法である。
【００１７】
【発明の実施の形態】
［第１の実施の形態］
図１は、本発明の第１の実施の形態に係る連長体１の概略構成を示す断面図である。
【００１８】
連長体１は、樹脂または熱収縮部材で構成され長く延びた保持部材３を備え、この保持部材３に包み込まれて、上記保持部材３の内部（円環状の外壁で囲まれている内部空間）に複数のＲＦＩＤ（Ｒａｄｉｏ Ｆｒｅｑｕｅｎｃｙ Ｉｄｅｎｔｉｆｉｃａｔｉｏｎ）素子５が設けられている。なお、上記ＲＦＩＤ素子５に格納されている情報は、たとえば電磁波を媒体にして、ＲＦＩＤリーダで読み取り可能になっている。
【００１９】
上記各ＲＦＩＤ素子５同士は、上記保持部材３の長手方向で間隔をあけて配置され、上記ＲＦＩＤ素子５が設けられている箇所の上記保持部材３の内径（以下、「有ＲＦＩＤ素子部の内径」という場合がある。）が、上記ＲＦＩＤ素子５が設けられていない箇所の上記保持部材３の内径（以下、「無ＲＦＩＤ素子部の内径」という場合がある。）よりも大きく構成されていることによって、上記各ＲＦＩＤ素子５の上記保持部材３の長手方向への移動が規制されている。なお、上記各ＲＦＩＤ素子５同士の各間隔の値は一定の値であってもよいし、上記各ＲＦＩＤ素子５同士の各間隔は互いが異なっていてもよい。
【００２０】
さらに詳しく説明すると、ＲＦＩＤ素子５は、たとえば、両端部が半球状である円柱状に形成され、また、上記ＲＦＩＤ素子５の外郭部は電磁波を通過させる硬質の部材（たとえば、ガラスやプラスチック）で構成され、上記ＲＦＩＤ素子５の長手方向と上記パイプ状部材３の長手方向とがほぼ一致するように、上記各ＲＦＩＤ素子５が設けられている。
【００２１】
また、上記有ＲＦＩＤ素子部の内径が、無ＲＦＩＤ素子部の内径よりも大きく構成されているということは、たとえば、上記有ＲＦＩＤ素子部の内径が、上記ＲＦＩＤ素子５の外形とほぼ等しく、上記無ＲＦＩＤ素子部の内径が「０」である場合も含むものとする。すなわち、図１に示すように、各ＲＦＩＤ素子５の全外周面に上記保持部材３が密着し、各ＲＦＩＤ素子５同士の間が、内部に空の間（たとえば、空気のみで満たされた空間）が存在しない保持部材３で充填されていてもよい。
【００２２】
さらに、保持部材３が各ＲＦＩＤ素子５を保持して、上記保持部材３に対する各ＲＦＩＤ素子５の相対的な移動を規制できるようになっていればよい。
【００２３】
なお、連長体１では、保持部材３の長手方向の垂直な断面の形状を、たとえば円形状とし、無ＲＦＩＤ素子部の外径を、有ＲＦＩＤ素子部の外径よりも大きく構成している。そして、各ＲＦＩＤ素子５を包み込んだ高温の上記保持部材３が冷めるときに、上記保持部材３がほぼ一様に（均等に）冷めるようにして、上記保持部材３が歪まないようにしている。また、保持部材３を上述のような形状に形成することによって、保持部材３を構成する部材の必要量を軽減している。
【００２４】
図２は、上記連長体１を製造するための連長体製造装置７の概略構成を示す図である。
【００２５】
連長体製造装置７は本体部９を備え、この本体部９の上部側には、ホッパ１１が設けられている。なお、上記ホッパ１１は、上記保持部材３を構成する部材であって、たとえばペレット状の熱可塑性樹脂部材を収納可能になっている。
【００２６】
また、上記本体部９の一側部側には、ＲＦＩＤ素子フィーダ１３が設けられている。ここで、上記ＲＦＩＤ素子フィーダ１３は、ＲＦＩＤ素子収納部１５とガス押し出し器１７とによって構成され、ガス押し出し器１７が発生するガス圧によって、上記ＲＦＩＤ素子収納部１５が格納している複数のＲＦＩＤ素子を１つづつ、本体部９に設けられている、図示しない押し出しヘッドに間歇的に供給できるようになっている。
【００２７】
そして、上記収納ホッパ１１に収納されている熱可塑性樹脂を加熱することによって溶融した熱可塑性樹脂を上記押し出しヘッドへ供給し、この供給された熱可塑性樹脂で、上記間歇的に供給された各ＲＦＩＤ素子５を包み込んで、各ＲＦＩＤ素子５を被覆し、各ＲＦＩＤ素子５が、上記熱可塑性樹脂の内部に設けられ、連長体１が製造される。なお、この製造された連長体１は、本体部９の他側部側から、連長体製造装置７の外部に、矢印ＡＲの方向で連続的に（一体的につながって）排出される。
【００２８】
また、上記押し出しヘッドを用いて、上記熱可塑性樹脂で被覆されることにより、各ＲＦＩＤ素子５は上記熱可塑性樹脂（保持部材）の長手方向で間隔をあけて配置され、上記ＲＦＩＤ素子５が設けられている箇所の上記保持部材の内径は、上記ＲＦＩＤ素子５が設けられていない箇所の上記保持部材の内径よりも大きく構成されようになっている。そして、上記各ＲＦＩＤ素子５の上記保持部材長手方向への移動が規制される。換言すれば、上記各ＲＦＩＤ素子５は固定される。
【００２９】
次に、連長体１が設けられているケーブル１９について説明する。
【００３０】
図３は、連長体１が設けられているケーブル１９の概略構成を示す断面図である。
【００３１】
なお、上記断面図（図３）は、ケーブル１９の軸方向に直角な平面でケーブル１９を切断した場合の断面図である。
【００３２】
ケーブル１９は、内部にケーブルコア２１を備え、このケーブルコア２１の外側はシース２３で覆われている。
【００３３】
ケーブルコア２１は、この中心部にケーブル１９の長手方向に沿って長く設けられた抗張体２５を備え、抗張体２５の周りを囲むように、断面が円形状のスロット２７が、ケーブル１９の長手方向に沿って長く設けられている。
【００３４】
スロット２７の外周にほぼ等角度で分配された位置には、ケーブル１９の長手方向に沿って、複数の溝２９Ａ〜２９Ｅが設けられている。そして、上記各溝２９Ａ〜２９Ｅの総てには、たとえば４芯の光ファイバテープ３１が適数個配設されており、上記各溝２９Ａ〜２９Ｅが設けられている箇所以外の、スロット２７の外周壁に接して、連長体１が設けられている。なお、連長体１はスロット２７の外周壁に縦添えまたは横巻きされている。
【００３５】
なお、上記各溝２９Ａ〜２９Ｅおよび上記連長体１は、格納するためにケーブル１９をドラムに巻いた場合、外側に位置する光ファイバテープ３１のみが延びることを防いで、各光ファイバテープ３１が、ほぼ均等に延びるようにするために、上記各溝２９Ａ〜２９Ｅは、ケーブル２７の長手方向に延伸する中心軸ＣＬに対して、平行に直進しているのではなく（図３の紙面に直角に延びているのではなく）、僅かにねじれて長手方向に延伸している。つまり、図３の紙面に対して僅かに斜めに傾いて延びている。
【００３６】
そして、連長体１と光ファイバテープ３１が設けられているスロット２７とを一体にして両者を覆うように、スロット２７の外周と上記連長体１とには、上記連長体１と光ファイバテープ３１とを押さえ込むための押え巻き３３が横巻きされ、これによって、連長体１は、ケーブルコア２１に一体的に設けられている。
【００３７】
また、押え巻き３３がされたケーブルコア２１の外側は、長手方向の断面が円環状のシース２３で被覆されている。なお、上記シース２３は、たとえば、ポリエチレン（ＰＥ）、ポリ塩化ビニル（ＰＶＣ）、ノンハロゲン難燃材、燃やした場合に有毒ガスを発生せず、またビニルとの分別が容易なエコ材等で構成されている。
【００３８】
次に、ケーブル３５について説明する。
【００３９】
図４は、連長体１が設けられているケーブル３５の概略構成を示す断面図である。
【００４０】
なお、上記断面図（図４）は、ケーブル３５の軸方向に直角な平面でケーブル３５を切断した場合の断面図である。
【００４１】
ケーブル３５は、内部にケーブルコア３７を備え、このケーブルコア３７の外側はシース３９で覆われている。
【００４２】
ケーブルコア３７は、この中心部にケーブル３７の長手方向に沿って長く設けられた抗張体４１を具備した、長手方向に垂直な断面が円形状のテンションメンバ４３を備え、長手方向に垂直な断面が円形状である複数の光ファイバコード４５のみで、テンションメンバ４３の周りを囲んでいる。なお、上記各光ファイバコード４５は、ケーブル３５の長手方向に沿って長く設けられている。
【００４３】
そして、上記各光ファイバコード４５を、上記テンションメンバ４３に固定するために、上記各光ファイバコード４５を覆うように押え巻き４７が横巻きされている。
【００４４】
さらに、横巻きされた押え巻き４７の外壁に連長体１を接触させて配設し（縦添えまたは横巻きして、連長体１をケーブルコア３７に設け）、この連長体１と押え巻き４７がされたケーブルコア３７とを一体化して両者を覆うように、押え巻き４９が横巻きされている。また、押え巻き４９がされたケーブルコア３７の外側は、長手方向の断面が円環状のシース３９で被覆されている。なお、上記シース３９は、ケーブル１９のシース２３とほぼ同様に、たとえば、ポリエチレン、ポリ塩化ビニル、ノンハロゲン難燃材、または、エコ材等で構成されている。
【００４５】
また、上記各光ファイバコード４５や上記連長体１は、ケーブル１９の場合と同様に、ケーブル３５の長手方向に僅かに捻れて延伸している。
【００４６】
次に、ケーブル５１について説明する。
【００４７】
図５は、連長体１が設けられているケーブル５１の概略構成を示す断面図である。
【００４８】
なお、上記断面図（図５）は、ケーブル５１の軸方向に直角な平面でケーブル５１を切断した場合の断面図である。
【００４９】
ケーブル５１は、スロットに形成されている各溝のうちの１つに連長体を配設している点が、ケーブル１９とは異なり、その他の点はケーブル１９とほぼ同様に構成されている。
【００５０】
すなわち、ケーブル５１は、内部にケーブルコア５３を備え、このケーブルコア５３の外側はシース５５で覆われている。
【００５１】
ケーブルコア５３は、この中心部にケーブル５１の長手方向に沿って長く設けられた抗張体５７を備え、抗張体５７の周りを囲むように、断面が円形状のスロット５９が、ケーブル５１の長手方向に沿って長く設けられている。
【００５２】
スロット５９の外周にほぼ等角度で分配された位置には、ケーブル５１の長手方向に沿って、複数の溝６１Ａ〜６１Ｆが設けられている。そして、上記各溝６１Ａ〜６１Ｆのうちの１つの溝６１Ｆ内に、ケーブル５１の長手方向に沿って、連長体１が設けられている。また他の各溝６１Ａ〜６１Ｅには、たとえば４芯の光ファイバテープ６３が適数個設けられている。
【００５３】
さらに、連長体１と光ファイバテープ６３とが設けられているスロット５９の外周には、上記連長体１と光ファイバテープ６３とを押さえ込むための押え巻き６５が横巻きされている。
【００５４】
このようにして、連長体１は、ケーブルコア５３に一体化されて設けられている。
【００５５】
なお、上記各光ファイバテープ６３や上記連長体１は、ケーブル１９の場合と同様に、ケーブル５１の長手方向に僅かに捻れて延伸している。
【００５６】
また、押え巻き６５がされたケーブルコア５３の外側は、長手方向の断面が円環状のシース５５で被覆されている。なお、上記シース５５は、ケーブル１９の場合とほぼ同様に、たとえば、ポリエチレン（ＰＥ）、ポリ塩化ビニル（ＰＶＣ）、ノンハロゲン難燃材、燃やした場合に有毒ガスを発生せず、またビニルとの分別が容易なエコ材等で構成されている。
【００５７】
次に、ケーブル６７について説明する。
【００５８】
図６は、連長体１が設けられているケーブル６７の概略構成を示す断面図である。
【００５９】
なお、上記断面図（図６）は、ケーブル６７の軸方向に直角な平面でケーブル６７を切断した場合の断面図である。
【００６０】
ケーブル６７は、連長体と各光ファイバコードとを用いて、テンションメンバの周りを囲んでいる点が、ケーブル３５とは異なり、その他の点はケーブル３５とほぼ同様に構成されている。
【００６１】
すなわち、ケーブル６７は、内部にケーブルコア６９を備え、このケーブルコア６９の外側はシース７１で覆われている。
【００６２】
ケーブルコア６９は、この中心部にケーブル６７の長手方向に沿って長く設けられた抗張体７３を具備した、長手方向に垂直な断面が円形状のテンションメンバ７５を備え、連長体１と、長手方向に垂直な断面が円形状である複数の光ファイバコード７７とが、テンションメンバ７５の周りを囲んで、ケーブル６７の長手方向に沿って長く設けられている。換言すれば、図６に示すケーブル６７の断面図では、各光ファイバコード７７および連長体１が、テンションメンバ７５の外周壁に接し、さらに、隣り合う各光ファイバコード７７同士が互いに接し、連長体１が設けられている箇所では、この連長体１とこの連長体１と隣り合う光ファイバコード７７とが互いに接している。
【００６３】
さらに、図６の断面図において、連長体１の外周のうちで、テンションメンバ７５から最も離れた部位と、各光ファイバコード７７の各外周のうちで、テンションメンバ７５から最も離れた各部位とを、互いに結んだ包絡線に沿って、上記連長体１と光ファイバコード７７とを押さえ込むための押え巻き７９が横巻きされている。
【００６４】
このようにして、連長体１は、ケーブルコア６９に一体化されて設けられている。
【００６５】
なお、上記各光ファイバコード７７や上記連長体１は、ケーブル１９の場合と同様に、ケーブル６７の長手方向に僅かに捻れて延伸している。
【００６６】
また、押え巻き７９がされたケーブルコア６９の外側は、長手方向の断面が円環状のシース７１で被覆されている。なお、上記シース７１は、ケーブル１９の場合とほぼ同様に、たとえば、ポリエチレン、ポリ塩化ビニル、ノンハロゲン難燃材、または、エコ材等で構成されている。
【００６７】
なお、ケーブル１９やケーブル３５は、ケーブルコアの外形に対して連長体１の外形が十分に小さい場合の実施形態であり、ケーブルコアの外形に対して連長体１の外形が十分に小さくはない場合には、ケーブル５１やケーブル６７のような実施形態にすることが望ましい。
【００６８】
連長体１によれば、保持部材３の長手方向に間隔をあけて、複数のＲＦＩＤ素子５が配置され固定されており、連長体１が長く一体的に形成されているので、連長体１の長手方向とケーブルの長手方向とを互いにそろえて、連長体１を上記ケーブルのケーブルコアに一体化して設けることが容易になり、各ＲＦＩＤ素子５を上記ケーブルの長手方向に間隔をあけて設けるときの作業が容易になる。
【００６９】
また、連長体１によれば、円柱状のＲＦＩＤ素子５の長手方向と、連長体１の長手方向とを互いに一致させて、連長体１を形成しているので、連長体１の外形を、極力小さくすることができ、連長体１をケーブルに設ける際に上記ケーブルの外形の増加を極力小さくすることができる。
【００７０】
また、連長体１によれば、樹脂で形成された保持部材３の内部に各ＲＦＩＤ素子５が設けられることによって、各ＲＦＩＤ素子５が保護されている。したがって、たとえば、各ＲＦＩＤ素子５の外皮が破損しやすい部材で構成されている場合に連長体１が外力を受けても、ＲＦＩＤ素子５が破損しにくくなっており、連長体１の取り扱いが容易になる。
【００７１】
連長体１を備えたケーブル１９によれば、ケーブル１９に関する情報（たとえば、ケーブル１９を識別するための情報）を記憶している記憶媒体としてＲＦＩＤ素子を採用しているので、ケーブル１９の外皮（シースの外周面）への印字またはケーブル１９へのタグの貼り付けやタグの吊り下げによって、ケーブル１９に関する情報を格納（表示）するよりも、大量の情報を格納でき、しかも、ケーブル１９の外皮を露出させずに、ＲＦＩＤ素子５の情報を読み取り表示可能なＲＦＩＤリーダをケーブル１９に近づけるだけで、ＲＦＩＤ素子５に格納されている情報を上記ＲＦＩＤリーダで読み取って表示することができる。つまり、ケーブル１９に関する情報を容易に読み取って表示することができる。
【００７２】
また、連長体１を備えたケーブル１９によれば、ケーブル１９に関する情報を記憶している記憶媒体としてＲＦＩＤ素子５を採用し、このＲＦＩＤ素子５を、ケーブル１９のシース２３が被覆しているので、ケーブル１９敷設後の長い期間の経過や、ケーブル１９を設置するときの擦り等によって、ケーブル１９に関する情報がかすれたり消えたりして、判読不可能になることを回避することができる。また、ＲＦＩＤ素子５が、シース２３で被覆されているので、たとえばケーブル１９を設置するときにこのケーブル１９に外力がかかっても、この外力がシース２３で緩和され、上記ＲＦＩＤ素子５が破損しにくくなる。
【００７３】
また、連長体１を備えたケーブル１９によれば、パイプ状のシース２３の肉厚部に、ＲＦＩＤ素子５が埋め込まれていることはなく、シース２３がこの長手方向にほぼ一様な形態になっているので、ケーブル１９を、たとえば、設置や保守のために折り曲げても、シース２３の肉厚部に応力集中が発生しにくく、したがって、上記設置や保守による折り曲げによって、ケーブル１９のシース２３が破損しにくくなる。
【００７４】
また、ケーブルコア２１にシース２３を被覆する場合、断面がほぼ円形状のケーブルコア２１に、断面が円環状のシース３３を被覆すればよく、シース２３の肉厚部内にＲＦＩＤ素子５を設ける必要はないので、上記被覆を容易に行うことができる。
【００７５】
また、ケーブル１９によれば、連長体１の長手方向に所定の間隔をあけて、各ＲＦＩＤ素子５を設けているので、ケーブル１９の長手方向の任意の位置で、ケーブル１９に関する情報を取得することができる。そして、ケーブル１９がたとえばトラフ内に敷設されこのトラフに蓋がされ、さらにこのトラフが土砂の中に埋設されている場合でも、上記土砂を長い区間にわたって取り除くことなく、土砂の一部を取り除くだけで、上記ケーブル１９の情報を読み取ることができ、上記土砂を取り除く工数を削減することができる。
【００７６】
なお、上記各ＲＦＩＤ素子５の設置間隔は、ＲＦＩＤ素子５に格納されている情報を、ＲＦＩＤリーダが読み取り可能な距離に応じて決定すればよい。たとえば、上記読み取り可能な距離が１ｍである場合に、各ＲＦＩＤ素子５の設置間隔を１ｍにすれば、ケーブル１９から０．８７ｍ（１ｍ÷２×√３≒０．８７ｍ）以内の距離にＲＦＩＤリーダを近づければ、ＲＦＩＤ素子５に格納されている情報を、上記ＲＦＩＤリーダで読み取ることができる。
【００７７】
なお、上記各ＲＦＩＤ素子５に格納されている、ケーブル１９に関する情報は、連長体１の製造前に予め各ＲＦＩＤ素子５に格納されていてもよいし、たとえば、図２に示す連長体製造装置７の、連長体１の排出部分に、ＲＦＩＤ素子５に情報を書き込み可能なＲＦＩＤライターを設置し、または、連長体製造装置７のＲＦＩＤ素子収納部１５にＲＦＩＤライターを設置して、連長体１を製造するときに、ケーブル１９に関する情報を、各ＲＦＩＤ素子５に書き込んでもよい。さらに、ケーブル１９の敷設後、ＲＦＩＤライターを用いて、各ＲＦＩＤ素子５の情報を書き換えてもよい。
【００７８】
連長体１を備えた各ケーブル３５、５１、６７によれば、各ケーブル３５、５１、６７に関する情報を大量に格納でき、しかも、各ケーブル３５、５１、６７に関する情報を容易に読み取って表示することができる等、ケーブル１９が備える効果とほぼ同様な効果を奏する。
【００７９】
また、各ケーブル３５、５１、６７において、ケーブル１９と同様に、連長体１の長手方向に所定の間隔をあけて、各ＲＦＩＤ素子５を設けているので、各ケーブル３５、５１、６７の長手方向の任意の位置で、各ケーブル３５、５１、６７に関する情報を取得することができる。
【００８０】
なお、上記各ＲＦＩＤ素子５の設置間隔は、ケーブル１９と同様に決定すればよい。
【００８１】
また、上記各ＲＦＩＤ素子５に格納されている、各ケーブル３５、５１、６７に関する情報も、ケーブル１９の場合と同様に書き込むことができる。
【００８２】
また、上記各ケーブル１９、３５、５１、６７を、光ファイバケーブルではなくメタルケーブルにしてもよいし、光ファイバとメタル線とが混在しているケーブルにしてもよい。
【００８３】
［第２の実施の形態］
次に、本発明の第２の実施の形態に係る連長体やこの連長体を用いたケーブルについて説明する。
【００８４】
第２の実施形態に係る連長体は、熱収縮性部材で構成されたパイプ状部材内に、各ＲＦＩＤ素子を、間隔をあけて挿入配置し、この後、上記各ＲＦＩＤ素子を保持するまで上記パイプ状部材を加熱し、上記パイプ状部材を収縮させて形成されるものである。
【００８５】
ここで、上記第２の実施形態に係る連長体を製造する場合について詳しく説明する。
【００８６】
まず、各ＲＦＩＤ素子を上記パイプ状部材内に挿入するための貫通穴（たとえばスリット）を、上記パイプ状部材の肉厚部に、長手方向で間隔をあけて設ける。
【００８７】
続いて、上記各貫通穴を介して各ＲＦＩＤ素子を上記パイプ状部材内に挿入し、上記挿入された各ＲＦＩＤ素子の位置を、上記パイプ状部材の長手方向に僅かにずらして、上記各ＲＦＩＤ素子が上記パイプ状部材内でこのパイプ状部材の長手方向に間隔をあけて配設された状態にすると共に、上記各ＲＦＩＤ素子が、上記貫通穴が設けられている位置を避けた位置に配設されるようにする。
【００８８】
続いて、上記パイプ状部材に、たとえばお湯をかけることによって、上記パイプ状部材を加熱し、上記パイプ状部材を収縮させて、上記パイプ状部材が上記各ＲＦＩＤ素子を保持するようにする。
【００８９】
第２の実施形態に係る連長体によれば、この連長体を製造する場合、第１の実施形態のように、高温で溶融している状態の保持部材３内に、ＲＦＩＤ素子５をを挿入する必要がなく、上記温度よりも低い温度で、保持部材を収縮させることができるので、高温によってＲＦＩＤ素子の機能が阻害されるおそれが少なくなる。
【００９０】
また、保持部材内に各ＲＦＩＤ素子５を挿入する場合、保持部材に設けられた貫通穴を用いることができるので、連長体を長く形成するために保持部材が長く形成されていても、各ＲＦＩＤ素子を、間隔をあけて挿入配置しやすい。また、上記保持部材を加熱して収縮させた場合、上記貫通穴の位置には、各ＲＦＩＤ素子が位置していないので、上記保持部材が、上記貫通穴のところから破損するおそれが少なくなる。
【００９１】
また、上記第２の実施形態に係る連長体は、第１の実施形態に係る連長体１のようにケーブルに設けることができ、各ケーブル１９、３５、５１、６７のようなケーブルを構成することができる。
【００９２】
【発明の効果】
本発明によれば、ケーブルに関する情報を従来よりも多量に格納可能であり、設置後長時間が経過しても上記格納している情報が判別不可能となるおそれが少なく、設置や保守のために折り曲げても破損しにくいケーブルおよびこのケーブルへの設置が容易な連長体およびこの連長体の製造方法を提供することができるという効果を奏する。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態に係る連長体の概略構成を示す断面図である。
【図２】連長体を製造するための連長体製造装置の概略構成を示す図である。
【図３】連長体が設けられているケーブルの概略構成を示す断面図である。
【図４】連長体が設けられているケーブルの概略構成を示す断面図である。
【図５】連長体が設けられているケーブルの概略構成を示す断面図である。
【図６】連長体が設けられているケーブルの概略構成を示す断面図である。
【符号の説明】
１ 連長体
３ 保持部材
５ ＲＦＩＤ素子
１９、３５、５１，６７ ケーブル
２１、３７、５３、６９ ケーブルコア
２３、３９、５５、７１ シース[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a continuous body formed by providing a plurality of RFID (Radio Frequency Identification) elements at intervals in the longitudinal direction of a long member, a method of manufacturing the same, and a cable provided with the continuous body. In particular, the present invention relates to a device that holds the respective RFID elements by changing the inner diameter of the elongated member in the longitudinal direction.
[0002]
[Prior art]
Conventionally, for example, as a method of identifying only a target cable from among a large number of laid metal cables or optical fiber cables, printing is performed on the outer surface (sheath) of each cable, or Methods for attaching tags and identifying cables are known.
[0003]
Here, the printing is performed by applying information such as a manufacturer name, a manufacturing date, a cable product name, and a cable length to the outer surface of the cable with ink, a thermal transfer laser, or the like. Further, information substantially similar to the printed information is engraved on the tag, for example. Then, the tag is attached to an outer cover of the cable, or is suspended from the cable using, for example, a metal wire.
[0004]
By the way, when printing is performed on the cable surface, the printing is performed along the longitudinal direction of the cable. Therefore, when the number of characters increases, it is necessary to expose the laid cable over a long section. However, if the cable is laid in a trough, for example, and the trough is covered, it is necessary to remove the cover over a long section, and when the trough is buried in earth and sand, It is necessary to remove earth and sand over a long section, and a large number of steps are required to expose the cable.
[0005]
Therefore, when performing the above-described printing, it is desirable to minimize the length of the printing along the longitudinal direction of the cable. However, if the length of the printing is limited in this manner, the total information necessary for the cable is required. However, there is a problem that it is difficult to print on the outer sheath of the cable.
[0006]
In addition, information on the cable, such as characters and symbols printed on the outer surface of the cable, may be unreadable due to elapse of a long period of time or, for example, rubbing at the time of cable installation or the like. There is a problem.
[0007]
Further, when the tags are provided on the cable, a large number of tags must be provided at regular intervals on the long cable, which takes a lot of man-hours when providing the tags, and, like the case of printing, It is difficult to write a lot of information on the tag.Furthermore, the tag provided on the cable is detached from the cable, or the information written on the tag is faded or disappears over time and becomes unreadable. There is a problem that may be.
[0008]
Therefore, a cable having a configuration in which, for example, a QR code (two-dimensional barcode) is attached to the surface of the cable outer cover instead of the above-described printing or tag on the outer surface of the cable is disclosed (for example, Patent Document 1). ).
[0009]
[Patent Document 1]
JP 2001-21730A
[0010]
[Problems to be solved by the invention]
By the way, according to the cable disclosed in Patent Document 1, since the information about the cable is QR-coded, it is necessary to store a large amount of information about the cable as compared with the case of using a print or a tag as described above. Can be.
[0011]
However, since the QR-coded information is provided on the surface of the cable, as in the case of printing as described above, the information may be blurred due to the elapse of a long period of time or rubbing when installing the cable, for example. There is a problem that it may be lost or disappear, or it may come off from the cable surface and become unreadable.
[0012]
The present invention has been made in view of the above problems, and it is possible to store a large amount of information on a cable than before, and it is difficult to determine the stored information even after a long time has elapsed after installation. It is an object of the present invention to provide a cable that is less likely to be formed, a continuous body that can be easily installed on the cable, and a method of manufacturing the same.
[0013]
[Means for Solving the Problems]
The present invention according to claim 1 includes a holding member that is made of a resin or a heat-shrinkable member and extends long, and a plurality of RFID elements that are wrapped by the holding member and provided inside the holding member. The RFID elements are arranged at intervals in the longitudinal direction of the holding member, and the inner diameter of the holding member where the RFID element is provided is the same as the holding member where the RFID element is not provided. By being configured to be larger than the inner diameter of the holding member, the continuous body restricts the movement of each of the RFID elements in the longitudinal direction of the holding member.
[0014]
The present invention according to claim 2, wherein the cable core, a resin or a heat-shrinkable member, and a long holding member, and a plurality of RFID elements wrapped in the holding member and provided inside the holding member. The RFID elements are arranged at intervals in the longitudinal direction of the holding member, and the inner diameter of the holding member at the location where the RFID element is provided is not provided with the RFID element. By configuring the holding member at a location larger than the inner diameter of the holding member, while restricting the movement of each of the RFID elements in the holding member longitudinal direction, a continuous body integrally provided with the cable core, A cable having the cable core and a sheath covering the continuous body.
[0015]
According to a third aspect of the present invention, in the method for manufacturing a continuous body constituted by a long holding member and a plurality of RFID elements provided in the holding member, each of the RFID elements is subjected to a gas pressure. In the extrusion, while intermittently fed into the extrusion head used for the coating process, in the extrusion head, extruded and coated on each of the RFID elements by the resin constituting the holding member, In order to regulate the movement of the holding member in the longitudinal direction, the inner diameter of the holding member where the RFID element is provided is larger than the inner diameter of the holding member where the RFID element is not provided. This is a method for producing a continuous body.
[0016]
According to a fourth aspect of the present invention, there is provided a method for manufacturing a continuous body including a long pipe-shaped member and a plurality of RFID elements provided in the pipe-shaped member. In the pipe-shaped member, the respective RFID elements are inserted and disposed at intervals, and the pipe-shaped member is heated and contracted until the respective RFID elements are held. And a heating step.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
[First Embodiment]
FIG. 1 is a cross-sectional view illustrating a schematic configuration of the elongated body 1 according to the first embodiment of the present invention.
[0018]
The elongated body 1 includes a long holding member 3 made of a resin or a heat-shrinkable member. The holding member 3 is wrapped around the holding member 3 (an inner space surrounded by an annular outer wall). ) Are provided with a plurality of RFID (Radio Frequency Identification) elements 5. The information stored in the RFID element 5 can be read by an RFID reader using, for example, an electromagnetic wave as a medium.
[0019]
The respective RFID elements 5 are arranged at intervals in the longitudinal direction of the holding member 3, and the inner diameter of the holding member 3 at the location where the RFID element 5 is provided (hereinafter, “the inner diameter of the existing RFID element portion”) ) May be larger than the inner diameter of the holding member 3 where the RFID element 5 is not provided (hereinafter, sometimes referred to as the “inner diameter of the non-RFID element portion”). Thus, the movement of each of the RFID elements 5 in the longitudinal direction of the holding member 3 is restricted. The value of each interval between the RFID elements 5 may be a constant value, or each interval between the RFID elements 5 may be different from each other.
[0020]
More specifically, the RFID element 5 is formed, for example, in a cylindrical shape with both ends being hemispherical, and the outer part of the RFID element 5 is a hard member (for example, glass or plastic) that allows electromagnetic waves to pass. The respective RFID elements 5 are provided so that the longitudinal direction of the RFID element 5 and the longitudinal direction of the pipe-shaped member 3 substantially match.
[0021]
In addition, the fact that the inner diameter of the RFID element portion is configured to be larger than the inner diameter of the non-RFID element portion means that, for example, the inner diameter of the RFID element portion is substantially equal to the outer shape of the RFID element 5, This includes the case where the inner diameter of the non-RFID element portion is “0”. That is, as shown in FIG. 1, the holding member 3 is in close contact with the entire outer peripheral surface of each RFID element 5, and the space between each RFID element 5 is empty (for example, a space filled only with air). ) May be filled with the holding member 3 that does not exist.
[0022]
Furthermore, it is only necessary that the holding member 3 holds the respective RFID elements 5 so that the relative movement of the respective RFID elements 5 with respect to the holding member 3 can be regulated.
[0023]
In the elongated body 1, the shape of the cross section perpendicular to the longitudinal direction of the holding member 3 is, for example, circular, and the outer diameter of the non-RFID element portion is larger than the outer diameter of the RFID element portion. . When the high-temperature holding member 3 enclosing each RFID element 5 cools, the holding member 3 cools almost uniformly (evenly) so that the holding member 3 is not distorted. In addition, by forming the holding member 3 into the shape described above, the required amount of members constituting the holding member 3 is reduced.
[0024]
FIG. 2 is a diagram showing a schematic configuration of a continuous body manufacturing apparatus 7 for manufacturing the continuous body 1.
[0025]
The continuous body manufacturing apparatus 7 includes a main body 9, and a hopper 11 is provided on an upper side of the main body 9. The hopper 11 is a member that constitutes the holding member 3 and can accommodate, for example, a pellet-shaped thermoplastic resin member.
[0026]
An RFID element feeder 13 is provided on one side of the main body 9. Here, the RFID element feeder 13 includes an RFID element storage unit 15 and a gas pusher 17, and a plurality of RFIDs stored in the RFID element storage unit 15 by gas pressure generated by the gas pusher 17. The elements can be supplied one by one intermittently to an extrusion head (not shown) provided in the main body 9.
[0027]
Then, a thermoplastic resin melted by heating the thermoplastic resin stored in the storage hopper 11 is supplied to the extrusion head, and the intermittently supplied RFIDs are supplied by the supplied thermoplastic resin. Each of the RFID elements 5 is covered so as to enclose the element 5, and each of the RFID elements 5 is provided inside the thermoplastic resin to manufacture the continuous body 1. The manufactured elongated body 1 is continuously (integrally) discharged from the other side of the main body 9 to the outside of the elongated body manufacturing apparatus 7 in the direction of the arrow AR. .
[0028]
Further, by being covered with the thermoplastic resin using the extrusion head, the RFID elements 5 are arranged at intervals in the longitudinal direction of the thermoplastic resin (holding member), and the RFID elements 5 are provided. The inner diameter of the holding member at the location where the RFID element 5 is provided is larger than the inner diameter of the holding member at the location where the RFID element 5 is not provided. Then, the movement of each of the RFID elements 5 in the longitudinal direction of the holding member is restricted. In other words, each of the RFID elements 5 is fixed.
[0029]
Next, the cable 19 provided with the elongated body 1 will be described.
[0030]
FIG. 3 is a cross-sectional view illustrating a schematic configuration of the cable 19 provided with the elongated body 1.
[0031]
The cross-sectional view (FIG. 3) is a cross-sectional view when the cable 19 is cut along a plane perpendicular to the axial direction of the cable 19.
[0032]
The cable 19 has a cable core 21 inside, and the outside of the cable core 21 is covered with a sheath 23.
[0033]
The cable core 21 has a tension member 25 provided at the center thereof along the longitudinal direction of the cable 19, and a slot 27 having a circular cross section is formed around the tension member 25 so as to surround the tension member 25. Are provided long along the longitudinal direction.
[0034]
A plurality of grooves 29 </ b> A to 29 </ b> E are provided along the longitudinal direction of the cable 19 at positions substantially equiangularly distributed on the outer periphery of the slot 27. In each of the grooves 29A to 29E, for example, an appropriate number of four-core optical fiber tapes 31 are provided, and the slots 27 of the slots 27 other than where the grooves 29A to 29E are provided are provided. An elongated body 1 is provided in contact with the outer peripheral wall. The elongated body 1 is vertically or horizontally wound on the outer peripheral wall of the slot 27.
[0035]
When the cable 19 is wound around a drum for storage, the grooves 29A to 29E and the elongated body 1 prevent the optical fiber tape 31 located only on the outside from extending, and the optical fiber tape 31 However, in order to extend almost equally, each of the grooves 29A to 29E does not go straight in parallel with the central axis CL extending in the longitudinal direction of the cable 27 (see FIG. Rather than extending at a right angle), it extends slightly longitudinally. That is, they extend slightly obliquely with respect to the paper surface of FIG.
[0036]
The outer periphery of the slot 27 and the elongated body 1 are connected to the elongated body 1 and the slot 27 provided with the optical fiber tape 31 so as to cover the two. A holding roll 33 for holding down the fiber tape 31 is wound horizontally, whereby the continuous body 1 is provided integrally with the cable core 21.
[0037]
The outside of the cable core 21 on which the presser winding 33 is wound is covered with an annular sheath 23 having a longitudinal section. The sheath 23 is made of, for example, polyethylene (PE), polyvinyl chloride (PVC), non-halogen flame-retardant material, eco-friendly material that does not generate toxic gas when burned, and is easily separated from vinyl. Have been.
[0038]
Next, the cable 35 will be described.
[0039]
FIG. 4 is a cross-sectional view illustrating a schematic configuration of the cable 35 provided with the elongated body 1.
[0040]
The sectional view (FIG. 4) is a sectional view when the cable 35 is cut along a plane perpendicular to the axial direction of the cable 35.
[0041]
The cable 35 has a cable core 37 inside, and the outside of the cable core 37 is covered with a sheath 39.
[0042]
The cable core 37 includes a tension member 43 having a tensile member 41 provided at the center thereof along the longitudinal direction of the cable 37 and having a circular cross section perpendicular to the longitudinal direction. Only the plurality of optical fiber cords 45 having a circular cross section surround the tension member 43. Each of the optical fiber cords 45 is provided to be long along the longitudinal direction of the cable 35.
[0043]
In order to fix each of the optical fiber cords 45 to the tension member 43, a presser winding 47 is wound so as to cover each of the optical fiber cords 45.
[0044]
Further, the continuous body 1 is disposed in contact with the outer wall of the horizontally wound holding roll 47 (the continuous body 1 is provided on the cable core 37 by vertically attaching or horizontally winding), and the continuous body 1 A holding roll 49 is wound horizontally so as to integrate the cable core 37 with the holding roll 47 and cover both. Further, the outside of the cable core 37 on which the presser winding 49 is wound is covered with a sheath 39 whose cross section in the longitudinal direction is annular. The sheath 39 is made of, for example, polyethylene, polyvinyl chloride, a non-halogen flame-retardant material, or an eco-friendly material in substantially the same manner as the sheath 23 of the cable 19.
[0045]
Further, each of the optical fiber cords 45 and the elongated body 1 are slightly twisted and extended in the longitudinal direction of the cable 35 as in the case of the cable 19.
[0046]
Next, the cable 51 will be described.
[0047]
FIG. 5 is a cross-sectional view illustrating a schematic configuration of the cable 51 provided with the elongated body 1.
[0048]
The sectional view (FIG. 5) is a sectional view when the cable 51 is cut along a plane perpendicular to the axial direction of the cable 51.
[0049]
The cable 51 is different from the cable 19 in that a continuous elongated body is provided in one of the grooves formed in the slot, and the other points are substantially the same as the cable 19. .
[0050]
That is, the cable 51 includes the cable core 53 inside, and the outside of the cable core 53 is covered with the sheath 55.
[0051]
The cable core 53 includes a tension member 57 provided at the center thereof along the longitudinal direction of the cable 51, and a slot 59 having a circular cross section is formed around the tension member 57 so as to surround the tension member 57. Are provided long along the longitudinal direction.
[0052]
A plurality of grooves 61 </ b> A to 61 </ b> F are provided along the longitudinal direction of the cable 51 at positions distributed at substantially equal angles on the outer circumference of the slot 59. The continuous body 1 is provided in one of the grooves 61A to 61F along the longitudinal direction of the cable 51. In each of the other grooves 61A to 61E, for example, an appropriate number of 4-core optical fiber tapes 63 are provided.
[0053]
Further, on the outer periphery of the slot 59 in which the elongated body 1 and the optical fiber tape 63 are provided, a holding roll 65 for holding down the elongated body 1 and the optical fiber tape 63 is horizontally wound.
[0054]
Thus, the elongated body 1 is provided integrally with the cable core 53.
[0055]
The optical fiber tape 63 and the elongated body 1 are slightly twisted and extended in the longitudinal direction of the cable 51 as in the case of the cable 19.
[0056]
Further, the outside of the cable core 53 on which the presser winding 65 is wound is covered with a sheath 55 having an annular cross section in the longitudinal direction. The sheath 55 is made of, for example, polyethylene (PE), polyvinyl chloride (PVC), a non-halogen flame-retardant material, does not generate a toxic gas when burned, It is made of eco-friendly materials that are easy to separate.
[0057]
Next, the cable 67 will be described.
[0058]
FIG. 6 is a cross-sectional view illustrating a schematic configuration of the cable 67 provided with the elongated body 1.
[0059]
The cross-sectional view (FIG. 6) is a cross-sectional view when the cable 67 is cut along a plane perpendicular to the axial direction of the cable 67.
[0060]
The cable 67 differs from the cable 35 in that it surrounds the tension member using a continuous body and each optical fiber cord, and the other points are substantially the same as the cable 35.
[0061]
That is, the cable 67 includes a cable core 69 inside, and the outside of the cable core 69 is covered with the sheath 71.
[0062]
The cable core 69 includes a tension member 75 having a tensile member 73 provided in the center thereof along the longitudinal direction of the cable 67 and having a circular cross section perpendicular to the longitudinal direction. A plurality of optical fiber cords 77 having a circular cross section perpendicular to the longitudinal direction are provided along the longitudinal direction of the cable 67 so as to surround the tension member 75. In other words, in the cross-sectional view of the cable 67 shown in FIG. 6, each optical fiber cord 77 and the continuous body 1 are in contact with the outer peripheral wall of the tension member 75, and further, each adjacent optical fiber cord 77 is in contact with each other, At the position where the elongated body 1 is provided, the elongated body 1 and the optical fiber cord 77 adjacent to the elongated body 1 are in contact with each other.
[0063]
Further, in the cross-sectional view of FIG. 6, of the outer periphery of the elongated body 1, the portion farthest from the tension member 75 and the outermost portion of each optical fiber cord 77, the portion farthest from the tension member 75. A holding roll 79 for holding down the continuous body 1 and the optical fiber cord 77 is wound horizontally along an envelope connecting the two.
[0064]
Thus, the elongated body 1 is provided integrally with the cable core 69.
[0065]
The optical fiber cords 77 and the elongated body 1 are slightly twisted in the longitudinal direction of the cable 67 and extend in the same manner as the cable 19.
[0066]
Further, the outside of the cable core 69 on which the presser winding 79 is wound is covered with a sheath 71 whose cross section in the longitudinal direction is annular. Note that the sheath 71 is made of, for example, polyethylene, polyvinyl chloride, a non-halogen flame-retardant material, an eco material, or the like, similarly to the case of the cable 19.
[0067]
Note that the cable 19 and the cable 35 are embodiments in which the outer shape of the elongated body 1 is sufficiently smaller than the outer shape of the cable core, and the outer shape of the elongated body 1 is sufficiently smaller than the outer shape of the cable core. If not, it is desirable to use an embodiment like the cable 51 or the cable 67.
[0068]
According to the elongate body 1, the plurality of RFID elements 5 are arranged and fixed at intervals in the longitudinal direction of the holding member 3, and the elongate body 1 is long and integrally formed. The longitudinal direction of the body 1 and the longitudinal direction of the cable are aligned with each other so that the continuous body 1 can be easily provided integrally with the cable core of the cable, and the RFID elements 5 can be spaced apart in the longitudinal direction of the cable. The work at the time of installation is facilitated.
[0069]
Further, according to the elongated body 1, since the elongated direction of the columnar RFID element 5 and the elongated direction of the elongated body 1 are matched with each other to form the elongated body 1, the elongated body 1 is formed. Can be made as small as possible, and when the continuous body 1 is provided in the cable, the increase in the outer shape of the cable can be made as small as possible.
[0070]
Further, according to the elongated body 1, each RFID element 5 is provided inside the holding member 3 formed of resin, thereby protecting each RFID element 5. Therefore, for example, when the outer skin of each RFID element 5 is made of a member that is easily damaged, even if the elongated body 1 receives an external force, the RFID element 5 is hardly damaged. Becomes easier.
[0071]
According to the cable 19 provided with the elongated body 1, since the RFID element is employed as a storage medium for storing information on the cable 19 (for example, information for identifying the cable 19), the outer sheath of the cable 19 is used. By printing on (outer peripheral surface of the sheath), attaching a tag to the cable 19, or suspending the tag, a larger amount of information can be stored than storing (displaying) information on the cable 19, and the cable 19 The information stored in the RFID element 5 can be read and displayed by the RFID reader only by bringing the RFID reader capable of reading and displaying the information of the RFID element 5 close to the cable 19 without exposing the outer skin. That is, information on the cable 19 can be easily read and displayed.
[0072]
Further, according to the cable 19 provided with the elongated body 1, the RFID element 5 is employed as a storage medium for storing information on the cable 19, and the RFID element 5 is covered with the sheath 23 of the cable 19. Therefore, it is possible to prevent the information about the cable 19 from being blurred or disappearing due to the elapse of a long period of time after the cable 19 is laid or the rubbing when the cable 19 is installed, so that the information cannot be read. Further, since the RFID element 5 is covered with the sheath 23, even if an external force is applied to the cable 19 when, for example, the cable 19 is installed, the external force is reduced by the sheath 23 and the RFID element 5 is damaged. It becomes difficult.
[0073]
Further, according to the cable 19 provided with the elongated body 1, the RFID element 5 is not embedded in the thick portion of the pipe-shaped sheath 23, and the sheath 23 is substantially uniform in the longitudinal direction. Therefore, even if the cable 19 is bent for installation or maintenance, for example, stress concentration hardly occurs at the thick portion of the sheath 23. 23 is less likely to be damaged.
[0074]
When covering the cable core 21 with the sheath 23, the cable core 21 having a substantially circular cross section may be covered with the sheath 33 having an annular cross section, and the RFID element 5 must be provided in the thick portion of the sheath 23. Therefore, the coating can be easily performed.
[0075]
Further, according to the cable 19, since the RFID elements 5 are provided at predetermined intervals in the longitudinal direction of the elongated body 1, information on the cable 19 is obtained at an arbitrary position in the longitudinal direction of the cable 19. can do. And even if the cable 19 is laid in a trough and the trough is covered, and the trough is buried in the earth and sand, only a part of the earth and sand is removed without removing the earth and sand over a long section. Thus, the information of the cable 19 can be read, and the number of steps for removing the earth and sand can be reduced.
[0076]
Note that the installation interval of each of the RFID elements 5 may be determined according to the distance at which the information stored in the RFID element 5 can be read by the RFID reader. For example, if the readable distance is 1 m and the interval between the RFID elements 5 is set to 1 m, the RFID is placed within 0.87 m (1 m （2 × ÷ 3 ≒ 0.87 m) from the cable 19. When the reader is approached, information stored in the RFID element 5 can be read by the RFID reader.
[0077]
The information on the cable 19 stored in each of the RFID elements 5 may be stored in advance in each of the RFID elements 5 before the manufacture of the elongated body 1, or, for example, the elongated body shown in FIG. An RFID writer capable of writing information to the RFID element 5 is installed at the discharge portion of the continuous body 1 of the manufacturing apparatus 7, or an RFID writer is installed in the RFID element storage unit 15 of the continuous body manufacturing apparatus 7. When manufacturing the elongated body 1, information on the cable 19 may be written to each RFID element 5. Further, after the cable 19 is laid, the information of each RFID element 5 may be rewritten using an RFID writer.
[0078]
According to each of the cables 35, 51, 67 provided with the elongated body 1, a large amount of information on each of the cables 35, 51, 67 can be stored, and information on each of the cables 35, 51, 67 can be easily read and displayed. For example, the same effects as those of the cable 19 can be obtained.
[0079]
In addition, in each cable 35, 51, 67, similarly to the cable 19, each RFID element 5 is provided at a predetermined interval in the longitudinal direction of the continuous elongated body 1. Information about each cable 35, 51, 67 can be obtained at any position in the longitudinal direction.
[0080]
The intervals between the RFID elements 5 may be determined in the same manner as the cable 19.
[0081]
Further, information on each of the cables 35, 51, and 67 stored in each of the RFID elements 5 can be written in the same manner as in the case of the cable 19.
[0082]
Further, the cables 19, 35, 51, 67 may be metal cables instead of optical fiber cables, or cables in which optical fibers and metal wires are mixed.
[0083]
[Second embodiment]
Next, a continuous body according to a second embodiment of the present invention and a cable using the continuous body will be described.
[0084]
In the continuous body according to the second embodiment, the respective RFID elements are inserted and arranged at intervals in a pipe-shaped member formed of a heat-shrinkable member, and thereafter, until the respective RFID elements are held. It is formed by heating the pipe-shaped member and shrinking the pipe-shaped member.
[0085]
Here, the case of manufacturing the elongated body according to the second embodiment will be described in detail.
[0086]
First, through holes (for example, slits) for inserting each RFID element into the pipe-shaped member are provided in the thick portion of the pipe-shaped member at intervals in the longitudinal direction.
[0087]
Subsequently, each RFID element is inserted into the pipe-shaped member through each through-hole, and the position of each inserted RFID element is slightly shifted in the longitudinal direction of the pipe-shaped member, and each RFID element is shifted. The elements are arranged in the pipe-shaped member at intervals in the longitudinal direction of the pipe-shaped member, and the RFID elements are arranged at positions avoiding the positions where the through holes are provided. To be installed.
[0088]
Subsequently, for example, hot water is applied to the pipe-shaped member to heat the pipe-shaped member and to contract the pipe-shaped member so that the pipe-shaped member holds each of the RFID elements.
[0089]
According to the continuous body according to the second embodiment, when manufacturing the continuous body, as in the first embodiment, the RFID element 5 is placed in the holding member 3 in a state of being melted at a high temperature. Since the holding member can be contracted at a temperature lower than the above temperature, there is less possibility that the function of the RFID element is hindered by the high temperature.
[0090]
Further, when inserting each RFID element 5 into the holding member, the through-hole provided in the holding member can be used. Therefore, even if the holding member is formed long in order to form the elongated body, It is easy to insert and arrange the RFID elements at intervals. In addition, when the holding member is contracted by heating, since the RFID elements are not located at the positions of the through holes, the risk of the holding members being damaged from the through holes is reduced.
[0091]
Further, the continuous body according to the second embodiment can be provided on a cable like the continuous body 1 according to the first embodiment, and a cable such as each of the cables 19, 35, 51, and 67 can be provided. Can be configured.
[0092]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the information regarding a cable can be stored in a larger amount than before, and even if a long time passes after installation, there is little possibility that the stored information cannot be determined. It is possible to provide a cable that is not easily damaged even when bent into a bent shape, a continuous body that can be easily installed on the cable, and a method of manufacturing the continuous body.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a schematic configuration of a continuous body according to a first embodiment of the present invention.
FIG. 2 is a diagram showing a schematic configuration of a continuous body manufacturing apparatus for manufacturing a continuous body.
FIG. 3 is a cross-sectional view illustrating a schematic configuration of a cable provided with a continuous body.
FIG. 4 is a cross-sectional view illustrating a schematic configuration of a cable provided with a continuous body.
FIG. 5 is a cross-sectional view illustrating a schematic configuration of a cable provided with a continuous body.
FIG. 6 is a cross-sectional view illustrating a schematic configuration of a cable provided with a continuous body.
[Explanation of symbols]
1 streak
3 Holding member
5 RFID element
19, 35, 51, 67 cable
21, 37, 53, 69 Cable core
23, 39, 55, 71 sheath

Claims (4)

樹脂または熱収縮部材で構成され、長く延びた保持部材と；上記保持部材に包み込まれて、上記保持部材内部に設けられた複数のＲＦＩＤ素子と；
を有し、上記各ＲＦＩＤ素子同士は上記保持部材の長手方向で間隔をあけて配置され、上記ＲＦＩＤ素子が設けられている箇所の上記保持部材の内径を上記ＲＦＩＤ素子が設けられていない箇所の上記保持部材の内径よりも大きく構成することによって、上記各ＲＦＩＤ素子の上記保持部材長手方向への移動を規制していることを特徴とする連長体。A holding member that is made of resin or a heat-shrinkable member and extends long; a plurality of RFID elements wrapped by the holding member and provided inside the holding member;
The RFID elements are arranged at intervals in the longitudinal direction of the holding member, and the inner diameter of the holding member where the RFID element is provided is the inner diameter of the location where the RFID element is not provided. A continuous body characterized in that it is configured to be larger than the inner diameter of the holding member to restrict movement of each of the RFID elements in the longitudinal direction of the holding member. ケーブルコアと；
樹脂または熱収縮部材で構成され、長く延びた保持部材と、上記保持部材に包み込まれて、上記保持部材内部に設けられた複数のＲＦＩＤ素子とを具備し、上記各ＲＦＩＤ素子同士は上記保持部材の長手方向で間隔をあけて配置され、上記ＲＦＩＤ素子が設けられている箇所の上記保持部材の内径を、上記ＲＦＩＤ素子が設けられていない箇所の上記保持部材の内径よりも大きく構成することによって、上記各ＲＦＩＤ素子の上記保持部材長手方向への移動を規制していると共に、上記ケーブルコアに一体的に設けられた連長体と；
上記ケーブルコアと上記連長体とを被覆しているシースと；
を有することを特徴とするケーブル。A cable core;
A holding member that is made of resin or a heat-shrinkable member, and includes a long holding member, and a plurality of RFID elements wrapped in the holding member and provided inside the holding member; Are arranged at intervals in the longitudinal direction, the inner diameter of the holding member at the location where the RFID element is provided is configured to be larger than the inner diameter of the holding member at the location where the RFID element is not provided. A continuous body that regulates the movement of each of the RFID elements in the longitudinal direction of the holding member and is provided integrally with the cable core;
A sheath covering the cable core and the elongated body;
A cable comprising: 長く延びた保持部材とこの保持部材内に設けられた複数のＲＦＩＤ素子とによって構成される連長体の製造方法において、
上記各ＲＦＩＤ素子を、ガスの圧力で押し出し、被覆加工に使用する押し出しヘッド内へ間歇的に送り込むと共に、上記押し出しヘッド内で、上記保持部材を構成する樹脂によって上記各ＲＦＩＤ素子に対して押し出し被覆加工を施し、上記各ＲＦＩＤ素子の上記保持部材長手方向への移動を規制するために、上記ＲＦＩＤ素子が設けられている箇所の上記保持部材の内径を、上記ＲＦＩＤ素子が設けられていない箇所の上記保持部材の内径よりも大きく構成することを特徴とする連長体の製造方法。In a method for manufacturing a continuous body constituted by a long holding member and a plurality of RFID elements provided in the holding member,
Each of the RFID elements is extruded under the pressure of gas, and is intermittently fed into an extrusion head used for coating processing. In the extrusion head, each of the RFID elements is extruded and coated with a resin constituting the holding member. In order to perform processing and regulate the movement of each of the RFID elements in the longitudinal direction of the holding member, the inner diameter of the holding member where the RFID element is provided is changed to the inner diameter of the place where the RFID element is not provided. A method of manufacturing a continuous body, wherein the continuous member is configured to be larger than the inner diameter of the holding member. 長く延びたパイプ状部材とこのパイプ状部材内に設けられた複数のＲＦＩＤ素子とによって構成される連長体の製造方法において、
熱収縮性部材で構成された上記パイプ状部材内に、上記各ＲＦＩＤ素子を、間隔をあけて挿入配置する挿入配置工程と；
上記各ＲＦＩＤ素子を保持するまで、上記パイプ状部材を加熱して上記パイプ状部材を収縮させる加熱工程と；
を有することを特徴とする連長体の製造方法。In a method for manufacturing a continuous body constituted by a long pipe-shaped member and a plurality of RFID elements provided in the pipe-shaped member,
Inserting and placing the RFID elements in the pipe-shaped member made of a heat-shrinkable member at an interval;
A heating step of heating the pipe-shaped member and contracting the pipe-shaped member until each of the RFID elements is held;
A method for producing a continuous body, comprising:
JP2003033733A 2003-02-12 2003-02-12 Successively patterned body, its manufacturing method, and cable Pending JP2004264901A (en)

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PCT/JP2004/001421 WO2004073130A1 (en) 2003-02-12 2004-02-10 Long continuous body, process for producing the same and cable
TW093103208A TW200425172A (en) 2003-02-12 2004-02-11 Long continuous body, process for producing the same, and cable

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