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JPH0574228A - Flexible cable - Google Patents

Flexible cable

Info

Publication number
JPH0574228A
JPH0574228A JP5827692A JP5827692A JPH0574228A JP H0574228 A JPH0574228 A JP H0574228A JP 5827692 A JP5827692 A JP 5827692A JP 5827692 A JP5827692 A JP 5827692A JP H0574228 A JPH0574228 A JP H0574228A
Authority
JP
Japan
Prior art keywords
flexible cable
insulated conductors
heat
conductors
flexibility
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
JP5827692A
Other languages
Japanese (ja)
Inventor
Masahiro Yamada
昌広 山田
Takeo Yachi
竹男 矢地
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.)
SWCC Corp
Original Assignee
Showa Electric Wire and Cable Co
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.)
Filing date
Publication date
Application filed by Showa Electric Wire and Cable Co filed Critical Showa Electric Wire and Cable Co
Priority to JP5827692A priority Critical patent/JPH0574228A/en
Publication of JPH0574228A publication Critical patent/JPH0574228A/en
Pending legal-status Critical Current

Links

Landscapes

  • Insulated Conductors (AREA)

Abstract

PURPOSE:To provide a flexible cable suitable for wiring in an apparatus, in which a space factor and flexibility are required, by covering a plurality of insulated conductors with a heat contraction tube so that an outside diameter dimension is decreased and flexibility is remarkably enhanced. CONSTITUTION:Respective insulated conductors 2 are composed of conductors 2a and insulating layers 2b, with which the conductors 2a are covered by means of extrusion; the insulating layers 2b are formed of a tetrafluoroethylene-ethylene copolymer (ETFE) being a fluoroethylene resin. These insulated conductors 2 are integrally twisted, and the resulted plural insulated conductors 2 are inserted into a thin thickness heat contraction tube 3 which serves as a protecting layer. This heat contraction tube 3 is heated so as to shrink to the extent enough to restrain a plurality of insulated conductors 2.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、産業機械や電子機器等
において電力や信号を供給するのに好適なフレキシブル
ケーブルに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible cable suitable for supplying electric power and signals in industrial machines and electronic equipment.

【0002】[0002]

【従来の技術】プリンターの移動部や産業用ロボットの
腕部等では、通常、強じんなシースを有するキャブタイ
ヤケーブルが用いられており、このキャブタイヤケーブ
ルは複数の絶縁心線と、これらの絶縁心線上に被覆され
ているシースとから成る。
2. Description of the Related Art A cabtyre cable having a strong sheath is usually used in a moving part of a printer or an arm part of an industrial robot. And a sheath coated on the insulating core wire.

【0003】ところで、多心のキャブタイヤケーブルに
おいては、絶縁線心を複数本より合わせた上にゴムシー
スが押出被覆されるので、絶縁線心のより合わせ間隙に
もゴムシースを構成する被覆材料が充填されてしまい、
この結果、ゴムシースに接する絶縁線心の動きが拘束さ
れ、ケーブルの可撓性が劣るという難点があった。また
ゴムシースの押出被覆においては、ゴムシースの厚さを
薄くするには限界がある(薄くできる厚さは1mm程度)
ので、全体としてケーブルの仕上り外径が大きくなり、
ひいてはスペースファクタが悪くなるという難点もあっ
た。
By the way, in a multi-core cabtire cable, a rubber sheath is extruded and coated on a plurality of insulating wire cores. Therefore, the twisting gap of the insulating wire cores is filled with the coating material forming the rubber sheath. Has been done,
As a result, the movement of the insulated core in contact with the rubber sheath is restricted, and the flexibility of the cable is poor. In addition, in extrusion coating of the rubber sheath, there is a limit in reducing the thickness of the rubber sheath (the thickness that can be reduced is about 1 mm).
As a result, the finished outer diameter of the cable increases as a whole,
As a result, there is also a drawback that the space factor becomes worse.

【0004】一方、リボン電線のように、絶縁電線を複
数本並列に配列して相互に接着して成るフレキシブルケ
ーブルを、機器の移動部等に組み込むことも行われてい
るが、かかる構成のフレキシブルケーブルにおいては、
絶縁電線の本数が多くなると、フレキシブルケーブルの
幅寸法が大きくなるので、機器との接続及びスペースと
の関係で使用態様が限られてしまう上に、機械的強度の
優れたテフロン系の材料を絶縁層とする絶縁電線におい
ては、隣接する絶縁電線の相互間を完全に接着すること
が困難であるという他の欠点を有している。
On the other hand, a flexible cable formed by arranging a plurality of insulated wires in parallel and adhering them to each other, such as a ribbon wire, is also incorporated in a moving part of a device, etc. In the cable,
As the number of insulated wires increases, the width of the flexible cable increases, which limits the usage in connection with equipment and space, and also insulates Teflon-based materials with excellent mechanical strength. The insulated wire as a layer has another drawback that it is difficult to completely bond adjacent insulated wires to each other.

【0005】[0005]

【発明が解決しようとする課題】本発明は、このような
点に着目してなされたもので、外径が細く、かつ可撓性
の優れたフレキシブルケーブルを提供することにある。
SUMMARY OF THE INVENTION The present invention has been made in view of such a point, and an object thereof is to provide a flexible cable having a small outer diameter and excellent flexibility.

【0006】[0006]

【課題を解決するための手段】本発明のフレキシブルケ
ーブルは、複数の絶縁線心がより合わされ、このより合
わされた絶縁線心の外周に全長に亘って包被された熱収
縮チューブが、前記より合わされた絶縁線心を押え付け
る程度に加熱収縮されていることを特徴としている。
In the flexible cable of the present invention, a plurality of insulating cores are twisted together, and a heat-shrinkable tube which is wrapped over the outer circumference of the twisted insulating cores over the entire length is formed by the above-mentioned method. It is characterized by being heated and shrunk to the extent that the combined insulated cores are pressed down.

【0007】[0007]

【作用】本発明のフレキシブルケーブルにおいては、よ
り合わされた複数の絶縁線心の全体を、予め筒状に形成
された熱収縮チューブによって、押え付ける程度に保持
しているので、絶縁線心のより合わせ間隙に熱収縮チュ
ーブを構成する被覆材料が充填されることがなく、この
結果、熱収縮チューブに接する絶縁線心の動きが拘束さ
れることがなくなり、ひいてはケーブルの可撓性が大幅
に向上する上、熱収縮チューブとして肉厚の薄いものを
選定すれば、従来の押出被覆によるゴムシースの厚さよ
りも保護層の厚さを薄くすることができ、全体としてケ
ーブルの仕上り外径を細くすることが可能になる。
In the flexible cable of the present invention, since the plurality of twisted insulated cores are held by a heat-shrinkable tube formed in a tubular shape in advance, the insulated cores are twisted together. The mating gap is not filled with the coating material that makes up the heat-shrinkable tube, which results in unrestrained movement of the insulated core in contact with the heat-shrinkable tube, which in turn greatly improves cable flexibility. In addition, by selecting a thin wall thickness for the heat shrink tube, the thickness of the protective layer can be made thinner than the thickness of the rubber sheath by the conventional extrusion coating, and the finished outer diameter of the cable can be made thin as a whole. Will be possible.

【0008】[0008]

【実施例】以下、本発明の実施例を図面を参照して詳細
に説明する。
Embodiments of the present invention will now be described in detail with reference to the drawings.

【0009】本発明に係るフレキシブルケーブル1は、
図1に示すように、複数の絶縁心線2を備えている。各
絶縁心線2は、導体2aと、この導体2a上に押出被覆
されている絶縁層2bとから成り、絶縁層2bはフッ素
樹脂であるテトラフルオロエチレン−エチレン共重合体
(ETFE)により形成されている。そして、これらの
絶縁心線2は一体的により合わされ、このより合わされ
た複数の絶縁線心2は、保護層としての、肉厚の薄い熱
収縮チューブ3内に挿入される。しかして、この熱収縮
チューブ3は、複数の絶縁線心2を押え付ける程度にま
で加熱収縮される。 なお、熱収縮チューブ3は、難燃
性架橋ポリオレフィンにより形成されている。 このよ
うに、押出成形される従来のゴムシースに代えて、熱収
縮チューブ3を用いると、保護層の肉厚を薄くすること
ができるので、全体としてフレキシブルケーブル1の仕
上り外径を細くすることができ、しかも可撓性の優れた
フレキシブルケーブル1が得られる。
The flexible cable 1 according to the present invention is
As shown in FIG. 1, a plurality of insulating core wires 2 are provided. Each insulating core wire 2 is composed of a conductor 2a and an insulating layer 2b extruded and coated on the conductor 2a. The insulating layer 2b is formed of tetrafluoroethylene-ethylene copolymer (ETFE) which is a fluororesin. ing. Then, these insulating cores 2 are united together as a unit, and the plurality of insulating cores 2 thus assembled are inserted into a thin heat-shrinkable tube 3 as a protective layer. Then, the heat shrinkable tube 3 is heat shrunk to such an extent that the plurality of insulated wire cores 2 are pressed. The heat-shrinkable tube 3 is made of flame-retardant cross-linked polyolefin. As described above, when the heat-shrinkable tube 3 is used instead of the conventional rubber sheath that is extruded, the thickness of the protective layer can be reduced, so that the finished outer diameter of the flexible cable 1 can be reduced as a whole. It is possible to obtain the flexible cable 1 having excellent flexibility.

【0010】また、接着不良の生じ易いETFEより成
る絶縁層2bを有する絶縁心線2をより合わせて熱収縮
チューブ3にて一体的に押え付けるだけなので、フレキ
シブルケーブル1の製作が非常に簡単である。更に、熱
収縮チューブ3を用いているので、絶縁心線2の数が多
くなっても確実に押え付けることができる。
Further, since the insulation core wire 2 having the insulation layer 2b made of ETFE, which is apt to cause defective adhesion, is simply twisted together and pressed together by the heat-shrinkable tube 3, the flexible cable 1 can be manufactured very easily. is there. Furthermore, since the heat-shrinkable tube 3 is used, even if the number of the insulating core wires 2 increases, the insulating core wire 2 can be reliably pressed down.

【0011】第2図には旋回試験装置が示されている。
即ち、この旋回試験装置は、回動軸10の下端に同軸的
に取付けられている内筒11と、内筒11が回動可能に
配される外筒12とを備え、内筒11の外壁面と外筒1
2の内壁面とは約70mmの間隔を有している。そして、
第1図に示す本発明のフレキシブルケーブル1は、一端
側が内筒11の上方に固定され、他端側が外筒12の底
壁に固定されている。かかる構造の旋回試験装置におい
て、回動軸10を135°の角度で往復5000回旋回
し、フレキシブルケーブル1に屈曲、捩れ及び引っ張り
を連続的に加えてその特性を調べたところ、特性劣化は
生じなかった。これは、熱収縮チューブ3を用いたこと
により、ケーブル1の可撓性が増大し、かつ機械的強度
が向上したことによると考えられる。
FIG. 2 shows a turning test device.
That is, this turning test apparatus includes an inner cylinder 11 coaxially attached to the lower end of the rotating shaft 10 and an outer cylinder 12 in which the inner cylinder 11 is rotatably arranged. Wall and outer cylinder 1
The inner wall surface of No. 2 has a space of about 70 mm. And
The flexible cable 1 of the present invention shown in FIG. 1 has one end side fixed above the inner cylinder 11 and the other end side fixed to the bottom wall of the outer cylinder 12. In the turning test device having such a structure, when the turning shaft 10 is turned back and forth 5000 times at an angle of 135 ° and bending, twisting and pulling are continuously applied to the flexible cable 1, the characteristics are examined, and no characteristic deterioration occurs. It was It is considered that this is because the use of the heat shrinkable tube 3 increased the flexibility of the cable 1 and improved the mechanical strength.

【0012】上記実施例において、絶縁線心1として
は、ゴム、その他の絶縁層を有するものでもよく、また
熱収縮チューブ3も、難燃性架橋ポリオレフィン以外の
材料から成るものを使用してもよい。また、熱収縮チュ
ーブ3は、フレキシブルケーブル1の全長に設けず、一
定の間隔毎に設けるようにしてもよい。この場合には、
フレキシブルケーブル1の可撓性が更に向上する上、フ
レキシブルケーブル1の製作費が安価になるという利点
がある。
In the above embodiment, the insulating core 1 may be rubber or other insulating layer, and the heat shrinkable tube 3 may be made of a material other than flame-retardant cross-linked polyolefin. Good. Further, the heat-shrinkable tube 3 may be provided not at the entire length of the flexible cable 1 but at regular intervals. In this case,
The flexibility of the flexible cable 1 is further improved, and the manufacturing cost of the flexible cable 1 is low.

【0013】一方、本発明のフレキシブルケーブル1を
大きな旋回速度の加わる機器内に組み込む場合には、熱
収縮チューブ3の内側にテンションメンバを挿入し、絶
縁心線2の導体2aに大きな張力が加わるのを防止すれ
ばよい。
On the other hand, when incorporating the flexible cable 1 of the present invention into a device to which a large turning speed is applied, a tension member is inserted inside the heat-shrinkable tube 3 to apply a large tension to the conductor 2a of the insulating core wire 2. Should be prevented.

【0014】尚、本発明のフレキシブルケーブル1は、
キャブタイヤケーブルに代えて用いることができるだけ
でなく、機器等の移動部に組み込まれる、いわゆる移動
用ケーブルとして利用することができる。
The flexible cable 1 of the present invention is
Not only can it be used in place of the cabtire cable, but it can also be used as a so-called moving cable that is incorporated in a moving part such as a device.

【0015】[0015]

【発明の効果】上記から明らかなように、本発明によれ
ば、複数の絶縁心線上に熱収縮チューブを被覆したこと
で、外径寸法が小さい上に、可撓性が著しく向上する。
従って、スペースファクタ及び可撓性を必要とする機器
の配線に好適なフレキシブルケーブルを提供することが
できる。
As is apparent from the above, according to the present invention, by covering a plurality of insulating core wires with heat-shrinkable tubes, the outer diameter dimension is small and the flexibility is remarkably improved.
Therefore, it is possible to provide a flexible cable suitable for wiring equipment that requires a space factor and flexibility.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係るフレキシブルケーブルの横断面図
である。
FIG. 1 is a cross-sectional view of a flexible cable according to the present invention.

【図2】本発明に係るフレキシブルケーブルを旋回試験
装置に取り付けた状態を示す斜視図である。
FIG. 2 is a perspective view showing a state in which a flexible cable according to the present invention is attached to a turning test device.

【符号の説明】[Explanation of symbols]

1…………フレキシブルケーブル 2…………絶縁心線 3…………熱収縮チューブ 1 ………… Flexible cable 2 ………… Insulated core wire 3 ………… Heat shrink tube

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】複数の絶縁線心がより合わされ、このより
合わされた絶縁線心の外周に全長に亘って包被された熱
収縮チューブが、前記より合わされた絶縁線心を押え付
ける程度に加熱収縮されていることを特徴とするフレキ
シブルケーブル。
1. A plurality of insulated wire cores are twisted together, and a heat-shrinkable tube covered over the entire length of the twisted insulated wire cores is heated to such an extent that the twisted insulated wire cores are pressed down. A flexible cable characterized by being contracted.
JP5827692A 1992-03-16 1992-03-16 Flexible cable Pending JPH0574228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5827692A JPH0574228A (en) 1992-03-16 1992-03-16 Flexible cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5827692A JPH0574228A (en) 1992-03-16 1992-03-16 Flexible cable

Publications (1)

Publication Number Publication Date
JPH0574228A true JPH0574228A (en) 1993-03-26

Family

ID=13079668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5827692A Pending JPH0574228A (en) 1992-03-16 1992-03-16 Flexible cable

Country Status (1)

Country Link
JP (1) JPH0574228A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110311191A1 (en) * 2010-06-22 2011-12-22 Sumitomo Electric Industries, Ltd. Opto-electro hybrid cable

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53137066A (en) * 1977-04-26 1978-11-30 Vandervell Products Ltd Manufacturing method of angle type bearing bush
JPS57106388A (en) * 1980-12-22 1982-07-02 Janome Sewing Mach Co Ltd Controller for safety of commutator motor
JPS58112397A (en) * 1981-12-26 1983-07-04 富士通株式会社 Method of placing rack

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53137066A (en) * 1977-04-26 1978-11-30 Vandervell Products Ltd Manufacturing method of angle type bearing bush
JPS57106388A (en) * 1980-12-22 1982-07-02 Janome Sewing Mach Co Ltd Controller for safety of commutator motor
JPS58112397A (en) * 1981-12-26 1983-07-04 富士通株式会社 Method of placing rack

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110311191A1 (en) * 2010-06-22 2011-12-22 Sumitomo Electric Industries, Ltd. Opto-electro hybrid cable
US8818153B2 (en) * 2010-06-22 2014-08-26 Sumitomo Electric Industries, Ltd. Opto-electro hybrid cable having electronic wires and optical fibers

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