JP2573754B2 - Multi-core cable - Google Patents
Multi-core cableInfo
- Publication number
- JP2573754B2 JP2573754B2 JP3084124A JP8412491A JP2573754B2 JP 2573754 B2 JP2573754 B2 JP 2573754B2 JP 3084124 A JP3084124 A JP 3084124A JP 8412491 A JP8412491 A JP 8412491A JP 2573754 B2 JP2573754 B2 JP 2573754B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- core cable
- cable
- bending
- coaxial
- 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.)
- Expired - Lifetime
Links
Landscapes
- Insulated Conductors (AREA)
- Communication Cables (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は医療機器、計測機器など
の電子機器内または機器間のように、屈曲性および雑音
防止が特に要求される多芯ケーブルに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-core cable which is particularly required to have flexibility and noise prevention, such as in electronic equipment such as medical equipment and measuring equipment or between equipment.
【0002】[0002]
【従来の技術】電子機器内の配線あるいは機器間の配線
等に使用される多芯ケーブルは、その取扱い上、柔軟性
に富むものが使用され、屈曲等の運動が加えられる頻度
が高い。屈曲等の運動が加えられると、多芯ケーブルを
構成する夫々の電線同士がこすり合わされ静電気が発生
し、これが信号を伝える中心導体やアースに影響をおよ
ぼし、信号への雑音の原因となる。2. Description of the Related Art A multi-core cable used for wiring in an electronic device or wiring between devices has a high flexibility in handling, and a movement such as bending is frequently applied. When a motion such as bending is applied, the electric wires constituting the multi-core cable are rubbed against each other to generate static electricity, which affects the central conductor for transmitting the signal and the ground, and causes noise to the signal.
【0003】[0003]
【発明が解決しようとする課題】多芯ケーブルに屈曲等
の運動が加えられると電線同士がこすり合わされ静電気
が発生し、これが信号を伝える中心導体やアースに影響
をおよぼし、信号への雑音の原因になることは従来より
知られていた。そこで、その対策として一芯ずつを横巻
き線等でシールドし、これをより合わせて多芯ケーブル
とすることが考えられた。しかし、医療機器、計測機器
等の高精度化に伴い、それらの機器内、または機器間に
使用される多芯ケーブルでは、横巻線等による各芯シー
ルドでもなおかつ、屈曲等の運動時には、雑音が問題に
なるようになり、その対策が必要になってきた。When a motion such as bending is applied to a multi-core cable, electric wires are rubbed against each other to generate static electricity, which affects the central conductor for transmitting signals and the ground, and causes noise to the signals. Has been known for some time. Therefore, as a countermeasure, it has been considered that each core is shielded by a horizontal winding wire or the like, and this is further combined to form a multi-core cable. However, with the increase in accuracy of medical equipment and measurement equipment, multi-core cables used in those equipments or between equipments are not shielded by each core due to horizontal winding etc. Has become a problem, and countermeasures have become necessary.
【0004】[0004]
【課題を解決するための手段】本発明は、医療機器、計
測機器等の高精度を要求される用途に於いて、屈曲等の
運動が加えられても前述のような雑音が発生しない多芯
ケーブルを得ることを目的とするもので、各芯の外被表
面に帯電防止材を塗布した後、多芯数の電線をより合わ
せることを特徴とし、なお好ましくは、その集合体を導
電性テープで抑え巻きしてなる多芯ケーブルである。SUMMARY OF THE INVENTION The present invention is directed to a multi-core device which does not generate the above-mentioned noise even when a motion such as bending is applied in applications requiring high precision, such as medical equipment and measuring equipment. The purpose of which is to obtain a cable, characterized in that after applying an antistatic material to the outer surface of each core, a multi-core wire is twisted, and more preferably, the assembly is made of a conductive tape. This is a multi-core cable that is held down by winding.
【0005】[0005]
【作用】各芯の外被表面に帯電防止材を塗布した後、多
芯数の電線をより合わせた多芯ケーブルなので、屈曲等
の運動が加えられても、静電気の発生が殆どなく、従っ
て雑音の発生も殆どない。又、多少静電気が発生したと
しても抑え巻きの導電性テープを介することにより、一
括シールドを通じてケーブル外部に逃がすことがより完
全になる。又、各芯の外被表面に帯電防止剤を塗布して
もかとう性という点には、ほとんど変化がなく、所定の
柔軟性は保持することが出来る。[Function] After applying an antistatic material to the outer surface of each core, since it is a multi-core cable in which a number of wires are twisted, even if a motion such as bending is applied, there is almost no generation of static electricity. There is almost no generation of noise. In addition, even if some static electricity is generated, it is possible to more completely escape to the outside of the cable through the collective shield by using the conductive tape which is wound and suppressed. Further, even when an antistatic agent is applied to the outer surface of each core, there is almost no change in the stiffness, and a predetermined flexibility can be maintained.
【0006】[0006]
【実施例】中心導体1として0.05mmの錫メッキ軟
銅線の7本より使用し、絶縁体2としてフッ素樹脂を押
出しにより成形し、外径約0.38mmに仕上げた。こ
の絶縁電線に0.03mmの錫メッキ軟銅線をシールド
としてビッチ約9mmで横巻き線3を施し、外被4とし
て4μm厚、2.5mm巾のポリエステルテープを2枚
重ね巻きした後、熱処理によって一体化し、同軸芯を仕
上げた。EXAMPLE A center conductor 1 was formed from seven tin-plated annealed copper wires of 0.05 mm, and a fluororesin was extruded as an insulator 2 to finish to an outer diameter of about 0.38 mm. This insulated wire is covered with a transversely wound wire 3 with a pitch of about 9 mm using a tinned annealed copper wire of 0.03 mm as a shield, and two 4 μm thick, 2.5 mm width polyester tapes are wrapped as a jacket 4 and then heat-treated. Integrated and finished coaxial core.
【0007】前述の同軸芯の外被4の表面に帯電防止剤
を塗布した後、次の様な手順で撚り合せた。すなわち前
述の同軸芯16芯をより合わせてA芯図2(a)とし
た。次に前述の同軸芯4芯をより合わせてB芯図2
(b)とした。そして、B芯4ユニット及びA芯7ユニ
ットを図2(c)の如くにより合わせた。これらの集合
体上に厚さ50μm、巾25mm、体積抵抗率1.3×
102(Ω−cm)程度の導電性テープ5を約1/3重
ねで抑え巻きした。更に、遮蔽用として素線径120μ
mの銅箔糸を複数本用い、ピッチ約65mmで 編組6
を施した。その編組6の外周にポリ塩化ビニル樹脂組成
物を厚さ約0.7mmで押出し被覆して外被7を形成
し、最終外径約9.4mmで、本発明の多芯ケーブルを
仕上げた。(以下本発明の多芯ケーブルという)After an antistatic agent was applied to the surface of the outer cover 4 of the above-mentioned coaxial core, they were twisted in the following procedure. That is, the above-mentioned 16 coaxial cores were twisted together to obtain an A-core figure 2 (a). Next, the above-mentioned four coaxial cores are twisted to form a B-core diagram 2
(B). Then, 4 units of the B core and 7 units of the A core were combined as shown in FIG. 2 (c). On these assemblies, a thickness of 50 μm, a width of 25 mm, and a volume resistivity of 1.3 ×
A conductive tape 5 of about 10 2 (Ω-cm) was suppressed and wound in about 1/3 overlap. Furthermore, the wire diameter is 120μ for shielding.
Braid 6 with a pitch of about 65 mm
Was given. The outer periphery of the braid 6 was extruded and coated with a polyvinyl chloride resin composition to a thickness of about 0.7 mm to form a jacket 7, and the multicore cable of the present invention was finished with a final outer diameter of about 9.4mm. (Hereinafter referred to as the multi-core cable of the present invention)
【0008】本発明の多芯ケーブルの特徴は、同軸芯の
外被表面に帯電防止剤を塗布した後、多芯により合わせ
ることと、より合せた集合体を導電性テープで抑え巻き
をすることとにあるが、帯電防止剤としては、いわゆる
外部用帯電防止剤として市販されているものを用いるこ
とができる。具体的には、たとえばNalauryl aminoprop
ionate,Diethanolamine salt lauryl amino propionate
など、吸着力の強いカチオン、両性界面活性剤を低沸点
の有機溶剤に溶かして、これを同軸芯の外被表面に塗布
することが好ましい。The feature of the multi-core cable of the present invention is that after coating an antistatic agent on the outer surface of the coaxial core, the coaxial core is joined by multi-core, and the joined assembly is suppressed and wound with a conductive tape. However, as the antistatic agent, those commercially available as so-called external antistatic agents can be used. Specifically, for example, Nalauryl aminoprop
ionate, Diethanolamine salt lauryl amino propionate
For example, it is preferable that a cation having a high adsorptive power and an amphoteric surfactant are dissolved in a low-boiling organic solvent, and this is applied to the outer surface of the coaxial core.
【0009】次に、本発明の多芯ケーブルと同様だが、
同軸線の外被表面に帯電防止剤を塗布せずにより合わせ
て集合し、その集合体を導電性のない通常のテフロンテ
ープで抑え巻きした多芯ケーブルを作成した。(以下比
較例の多芯ケーブルという)Next, as with the multi-core cable of the present invention,
An antistatic agent was not applied to the outer surface of the coaxial cable to form a multi-core cable that was assembled without applying an antistatic agent, and the assembly was suppressed and wound with a normal non-conductive Teflon tape. (Hereinafter referred to as the multi-core cable of the comparative example)
【0010】本発明の効果を確認するために、本発明の
多芯ケーブルと比較例の多芯ケーブルとに同様の屈曲を
与え、そのときに発生する雑音の測定を行った。図3
は、その測定を実施している様子を示す。すなわち、約
1.5mの多芯ケーブルサンプルを屈曲試験機に装着
し、多芯ケーブルのほぼ中央部を直径12.5mmのマ
ンドレル8にて固定し、屈曲部以外の部分を固定台9に
固定して試験機による屈曲以外の動きがサンプルに加わ
らないように装着する。屈曲部の動きは、機械的に行い
±90°の角度を1分間に30回の速さで往復運動させ
た。また、固定側のサンプル端からケーブル集合体をつ
つんでいる遮蔽用の一括編組6をアースにおとし、次に
同軸1芯を取り出し、その同軸の横巻き線3及び中心導
体1をグラフテック社TYPE WR3701リニアコ
ーダFのプラス側に接続して、屈曲運動中に発生する電
圧を測定した。その結果は図4に示した通り、比較例の
多芯ケーブルの場合は最大4.25mVの静電電圧が発
生したのに対して、本発明の多芯ケーブルの場合は最大
でも0.575mVの静電電圧しか発生しなかった。In order to confirm the effect of the present invention, the multi-core cable of the present invention and the multi-core cable of the comparative example were similarly bent, and the noise generated at that time was measured. FIG.
Indicates that the measurement is being performed. That is, a multi-core cable sample of about 1.5 m is mounted on a bending tester, and a substantially central portion of the multi-core cable is fixed by a mandrel 8 having a diameter of 12.5 mm, and a portion other than the bent portion is fixed to a fixing table 9. Then, mount the sample so that no motion other than bending by the tester is applied to the sample. The movement of the bent portion was performed mechanically and reciprocated at an angle of ± 90 ° at a speed of 30 times per minute. In addition, the shielding braid 6 covering the cable assembly from the sample end on the fixed side is grounded, and then one coaxial core is taken out. It was connected to the positive side of the linear coder F, and the voltage generated during the bending motion was measured. As a result, as shown in FIG. 4, the maximum voltage of 4.25 mV was generated in the case of the multi-core cable of the comparative example, whereas the maximum value of 0.575 mV was obtained in the case of the multi-core cable of the present invention. Only an electrostatic voltage was generated.
【0011】[0011]
【発明の効果】実施例に於いて述べた如く、本発明の多
芯ケーブルは、比較例の多芯ケーブルに比べて屈曲によ
る雑音の発生が顕著に防止されている。しかも、屈曲柔
軟性は従来と大差なく取り扱いも容易である。As described in the embodiments, the multi-core cable according to the present invention is significantly less likely to generate noise due to bending than the multi-core cable of the comparative example. In addition, the handling is easy without bending flexibility being much different from the conventional one.
【図1】本発明の多芯ケーブルを構成する同軸芯の部分
切断略図である。FIG. 1 is a partially cutaway schematic view of a coaxial core constituting a multi-core cable of the present invention.
【図2】 (a)同軸芯を16芯集合したA芯の断面を示す。 (b)同軸芯を4芯集合したB芯の断面を示す。 (c)本発明の多芯ケーブルの断面を示す。FIG. 2A shows a cross section of an A core obtained by assembling 16 coaxial cores. (B) shows a cross section of a B core obtained by assembling four coaxial cores. (C) shows a cross section of the multi-core cable of the present invention.
【図3】多芯ケーブルに屈曲を与えながら、その時の雑
音を測定している様子を示す。FIG. 3 shows a state in which noise is measured while bending the multi-core cable.
【図4】本発明の多芯ケーブルと比較例の多芯ケーブル
とで屈曲時の雑音特性を測定した結果を示す。FIG. 4 shows the results of measuring noise characteristics when bending the multi-core cable of the present invention and the multi-core cable of the comparative example.
1:中心導体 2:絶縁体 3:横巻き線 4:同軸芯の外被 5:抑え巻きテープ 6:遮蔽用編組 7:多芯ケーブル外被 8:マンドレル 9:固定台 10:測定器(グラフテック社 TYPE WR370
1 リニアコーダF)1: Center conductor 2: Insulator 3: Horizontal winding 4: Coaxial core jacket 5: Holding tape 6: Braid for shielding 7: Multi-core cable jacket 8: Mandrel 9: Fixed base 10: Measuring instrument (Graphtec) TYPE WR370
1 Linear coder F)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 和宏 神奈川県横浜市栄区田谷町1番地 住友 電気工業株式会社横浜製作所内 (56)参考文献 実開 昭57−171220(JP,U) 実開 昭55−5468(JP,U) 実開 昭56−148813(JP,U) ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuhiro Sato 1-chome, Taya-cho, Sakae-ku, Yokohama-shi, Kanagawa Prefecture Sumitomo Electric Industries, Ltd. Yokohama Works (56) References Shokai 57-171220 (JP, U) Shokai Shokai 55-5468 (JP, U) Actually open 1981-48813 (JP, U)
Claims (1)
おいて各々の電線の外被表面に帯電防止剤を有し、か
つ、抑え巻きテープとして、導電性テープを用いたこと
を特徴とする多芯ケーブル。1. A multi-core cable, comprising: a multi-core cable formed by twisting and gathering, wherein an antistatic agent is provided on the outer surface of each electric wire, and a conductive tape is used as a holding tape. cable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3084124A JP2573754B2 (en) | 1991-04-16 | 1991-04-16 | Multi-core cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3084124A JP2573754B2 (en) | 1991-04-16 | 1991-04-16 | Multi-core cable |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04319205A JPH04319205A (en) | 1992-11-10 |
JP2573754B2 true JP2573754B2 (en) | 1997-01-22 |
Family
ID=13821770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3084124A Expired - Lifetime JP2573754B2 (en) | 1991-04-16 | 1991-04-16 | Multi-core cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2573754B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014150827A1 (en) * | 2013-03-15 | 2014-09-25 | Commscope, Inc. Of North Carolina | Low static discharge lan twisted pair cable |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7351912B2 (en) * | 2005-02-10 | 2008-04-01 | Zoll Medical Corporation | Medical cable |
JP4829764B2 (en) * | 2006-12-07 | 2011-12-07 | タツタ電線株式会社 | Low noise cable |
JP5568358B2 (en) * | 2010-04-07 | 2014-08-06 | 日星電気株式会社 | Coaxial cable processed product |
JP6065756B2 (en) * | 2013-06-11 | 2017-01-25 | 日立金属株式会社 | Cable connection structure |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5388188A (en) * | 1977-01-11 | 1978-08-03 | Sumitomo Electric Ind Ltd | Coupling method of cable |
JPS5438302A (en) * | 1977-09-01 | 1979-03-22 | Osaka Gas Co Ltd | Evaporator of liquefied natural gas |
JPS6032773B2 (en) * | 1979-10-19 | 1985-07-30 | 松下電器産業株式会社 | Ventilation-linked gas appliances |
-
1991
- 1991-04-16 JP JP3084124A patent/JP2573754B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014150827A1 (en) * | 2013-03-15 | 2014-09-25 | Commscope, Inc. Of North Carolina | Low static discharge lan twisted pair cable |
Also Published As
Publication number | Publication date |
---|---|
JPH04319205A (en) | 1992-11-10 |
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