JPH0382204A - Spiral leakage coaxial cable - Google Patents
Spiral leakage coaxial cableInfo
- Publication number
- JPH0382204A JPH0382204A JP1219620A JP21962089A JPH0382204A JP H0382204 A JPH0382204 A JP H0382204A JP 1219620 A JP1219620 A JP 1219620A JP 21962089 A JP21962089 A JP 21962089A JP H0382204 A JPH0382204 A JP H0382204A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- coaxial cable
- conductor
- heat
- winding
- 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
Links
- 239000004020 conductor Substances 0.000 claims abstract description 38
- 239000012212 insulator Substances 0.000 claims abstract description 14
- -1 polyethylene Polymers 0.000 claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 11
- 239000004698 Polyethylene Substances 0.000 claims abstract description 10
- 229920000573 polyethylene Polymers 0.000 claims abstract description 10
- 239000003063 flame retardant Substances 0.000 claims description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 7
- 229920002554 vinyl polymer Polymers 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 abstract description 8
- 239000004703 cross-linked polyethylene Substances 0.000 abstract description 8
- 239000003779 heat-resistant material Substances 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 229910052736 halogen Inorganic materials 0.000 abstract description 2
- 150000002367 halogens Chemical class 0.000 abstract description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Landscapes
- Waveguides (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、地下街やトンネル内等の電波不感地帯での中
波帯を利用したドライバーへの情報提供等に用いられる
難燃性らせん漏洩同軸ケーブルに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a flame-retardant helical leakage coax that is used for providing information to drivers using the medium wave band in radio wave blind areas such as underground malls and tunnels. Regarding cables.
［従来の技術］
近年、中波ラジオ再放送や道路管理者等による中波帯を
利用したドライバーへの情報提供等に用いられる、送信
受信アンテナと伝送線路を一体化してなるらせん漏洩同
軸ケーブルが広く一般に使用されている。このらせん漏
洩同軸ゲーブルは、トンネル内等の電波不感帯地帯で使
用するに際し、これらの場所の防災管理をする必要から
、消防法施行規則の適用を受ける必要があり、この適用
を受ける防災設備内での使用については、特に配線材に
耐熱、耐火電線の使用が義務づけられている。[Prior art] In recent years, helical leaky coaxial cables, which integrate transmitting and receiving antennas and transmission lines, have been used for medium wave radio rebroadcasting and for road administrators to provide information to drivers using the medium wave band. Widely and commonly used. When this spiral leakage coaxial cable is used in radio wave dead zones such as inside tunnels, it is necessary to carry out disaster prevention management in these areas, so it must be subject to the Fire Service Act Enforcement Regulations, and it must be used within disaster prevention equipment that is subject to this. In particular, it is mandatory to use heat-resistant and fire-resistant wires as wiring materials.
発明者らは先にこの対策を方龜した第３図に示すような
構成の難燃性らせん漏洩同軸ゲーブルＩＢを発明し出願
している（特願昭６３−３０３８１６号公報）、この難
燃性らせん漏洩同軸ケーブルＩＢは、内部絶縁体層１を
形成する磁性コア上に、内部導体をらせん状に巻回した
内部導体層２を設け、その外測を一部または全部の層が
架橋ポリエチレンにより形成された外部絶縁体層３で覆
い、その外測に！！機物の耐熱材を巻回して耐熱層７を
形成し、その上に外部導体をらせん状に巻回した外部導
ｔｌＦ、層４を設け、その上部をビニルまたは難燃性ビ
ニルからなる外被層６′で覆う構成となっている。The inventors have previously invented and applied for a flame-retardant helical leakage coaxial cable IB having the structure shown in FIG. The helical leaky coaxial cable IB has an inner conductor layer 2 in which an inner conductor is spirally wound on a magnetic core forming an inner insulator layer 1, and a part or all of the outer layer is made of cross-linked polyethylene. Cover it with an external insulating layer 3 formed by and use it for external measurement! ! A heat-resistant layer 7 is formed by winding the heat-resistant material of the machine, and an external conductor layer 4 is provided on top of the heat-resistant layer 7, which is formed by winding an external conductor in a spiral shape. The structure is such that it is covered with a layer 6'.
［発明が解決しようとする問題点］
しかしながら、上記従来のらせん同軸ケーブルＩＢは、
第２図Ａ線で示すＪＩＳ Ａ １３０４で定める加
熱温度標準曲線の２分の１の加熱温度ｅ準曲線［Ｂ線］
に準じて３０分間加熱すると燃焼してしまい、実質的な
防災設備内における耐熱。[Problems to be Solved by the Invention] However, the above-mentioned conventional spiral coaxial cable IB has the following problems:
Heating temperature e semi-curve [Line B] which is half of the heating temperature standard curve defined by JIS A 1304 shown in Fig. 2 line A [Line B]
If heated for 30 minutes in accordance with
耐火特性基準を満すことが出来ず、このような場所への
使用に適さないという不都合があった。This had the disadvantage of not being able to meet fire resistance standards and being unsuitable for use in such locations.
［発明の目的］
本発明は上記従来例の有する不都合を改善し、比較的簡
単な構成で耐熱性、耐火特性を向上させることができる
らせん漏洩同軸ケーブルを提供することを、目的とする
。[Object of the Invention] It is an object of the present invention to provide a helical leakage coaxial cable that can improve the disadvantages of the above-mentioned conventional example and improve heat resistance and fire resistance with a relatively simple structure.
Ｅ問題点を解決するための手段］
そこで本発明では、磁性体からなる内部絶縁体層上に、
内部導体をらせん状に巻回してなる内部導体層を設け、
その上部に外部絶縁体層を介して外部導体をらせん状に
巻回してなる外部導体層を設けて、その外周を外被層で
被覆したらせん漏洩同軸ケーブルにおいて、前記外部絶
縁体層の一部または全部の層を架橋ポリエチレンにより
構成するとともに、前記内部導体層と前記外部絶縁体層
との間および前記外部絶縁体層と前記外部導体層の間に
それぞれ無機物からなる耐熱層を設け、更に前記外被層
を難燃性ビニルまたはハロゲンを含有しない難燃性ポリ
エチレンにより構成するという構成を採用することによ
り、前記目的を達成しようとするものである。Means for Solving Problem E] Therefore, in the present invention, on the internal insulating layer made of a magnetic material,
An internal conductor layer is provided by spirally winding the internal conductor.
In a helical leakage coaxial cable in which an outer conductor layer is provided on top of the outer conductor layer by spirally winding an outer conductor through an outer insulator layer, and the outer periphery of the outer conductor layer is covered with an outer cover layer, a part of the outer insulator layer is provided. Alternatively, all the layers are made of cross-linked polyethylene, and a heat-resistant layer made of an inorganic substance is provided between the inner conductor layer and the outer insulator layer and between the outer insulator layer and the outer conductor layer, and further, the The above objective is achieved by adopting a structure in which the outer covering layer is made of flame-retardant vinyl or flame-retardant polyethylene that does not contain halogen.
［実施例］
以下、本発明の一実施例に係るらせん漏洩同軸ケーブル
ＩＡを第１図に基づいて説明する。[Example] Hereinafter, a helical leaky coaxial cable IA according to an example of the present invention will be described based on FIG. 1.
ここで、上記従来例と同一の部材には同一の付方を付す
ものとする。Here, the same reference numbers are given to the same members as in the above conventional example.
第１図に示すらせん漏洩同軸ケーブルＩＡは内部絶縁体
としての磁性コア１を中心に、その上部に内部導体をら
せん状に巻回した内部導体層・２および無機物の耐熱材
を巻回してなる第２の耐熱層８を順次設け、更にその上
部に一部力層又は全部の層が架橋ポリエチレンにより形
成された外部絶縁層３が設けられている。また、この外
部絶縁層３上には、図示のように無機物の耐熱材を巻回
してなる第１の耐熱層７が設けられ、更にその外周には
導体をらせん状に巻回した外部導体層４が設けられ、そ
の上部に難燃性ビニル又はハロゲンを含有しない難燃性
ポリエチレンからなる外被層６を形成した構成となって
いる。５は支持線を示す。The helical leakage coaxial cable IA shown in Fig. 1 is made up of a magnetic core 1 as an internal insulator, an internal conductor layer 2 in which an internal conductor is spirally wound on top of the magnetic core 1, and an inorganic heat-resistant material wound around the magnetic core 1. A second heat-resistant layer 8 is sequentially provided, and an external insulating layer 3 in which part or all of the layer is made of crosslinked polyethylene is further provided on top of the second heat-resistant layer 8. Further, on this external insulating layer 3, a first heat-resistant layer 7 formed by winding an inorganic heat-resistant material as shown in the figure is provided, and further on the outer periphery of the first heat-resistant layer 7, an external conductor layer formed by spirally winding a conductor is provided. 4, and an outer covering layer 6 made of flame-retardant vinyl or halogen-free flame-retardant polyethylene is formed on top of it. 5 indicates the support line.
前記外部絶縁体層を形成する架橋ポリエチレンは、許容
温度が連続で９０ ［’Ｃ］ 、短絡時で２３０［℃］
で、ポリエチレンの許容温度、すなわち連続で７５［”
Ｃ］〜８０ ［’Ｃ］ 、短絡時１４０［”Ｃ］〜１５
０［”Ｃ］と比べ耐熱性に優れ溶融しにくいという特性
をもっている。The cross-linked polyethylene that forms the external insulating layer has an allowable temperature of 90 [°C] continuously and 230 [°C] during short circuit.
So, the permissible temperature of polyethylene is 75 [”
C] ~ 80 ['C], 140 [''C] ~ 15 when short-circuited
Compared to 0[''C], it has superior heat resistance and is less likely to melt.
この架橋ポリエチレンは、例えばポリエチレンに電子線
を照射し、網状分子補遺を形成する方法又は、ポリエチ
レンに過酸化ジアルキルや過酸化アシル等の有機過酸化
物を作用させて架橋する方法等により形成されている。This cross-linked polyethylene is formed, for example, by irradiating polyethylene with an electron beam to form a network molecular complement, or by applying an organic peroxide such as dialkyl peroxide or acyl peroxide to polyethylene to cross-link it. There is.
前記第２の断熱層７は、具体的にはガラステープからな
り耐熱性、絶縁性、可撓性に優れ、加えて前記架橋ポリ
エチレンが溶融したとしても、該架橋ポリエチレンが外
被層６１Ｉｌににじみ出ることを防止し、更に、内部導
体層２と外部導体層４との絶縁状態を保持する機能をも
っている。The second heat insulating layer 7 is specifically made of a glass tape and has excellent heat resistance, insulation, and flexibility, and in addition, even if the crosslinked polyethylene melts, the crosslinked polyethylene oozes into the outer covering layer 61Il. It has a function of preventing this and further maintaining an insulated state between the inner conductor layer 2 and the outer conductor layer 4.
また、前記第２の耐熱層８は、具体的にはポリエステル
テープまたは難燃ポリエステルチーブからなり、耐熱性
、絶縁性、可視性に優れ、加えて前記架橋ポリエチレン
が溶融したとしても、前記内部導体層２の熱による変形
および外部導体層４との接触を防止し、内部導体層２と
外部導体層４との絶縁状態を保持する機能をもっている
。Further, the second heat-resistant layer 8 is specifically made of a polyester tape or a flame-retardant polyester tube, and has excellent heat resistance, insulation, and visibility. It has a function of preventing deformation of the layer 2 due to heat and contact with the outer conductor layer 4, and maintaining an insulated state between the inner conductor layer 2 and the outer conductor layer 4.
一方、前記外被層６は難燃ビニルまたはハロゲンを含有
しない難燃性ポリエチレンにより構成したので、容易に
着火し、燃焼することがなく、難燃性に優れている。On the other hand, since the outer covering layer 6 is made of flame-retardant vinyl or halogen-free flame-retardant polyethylene, it easily ignites, does not burn, and has excellent flame retardancy.
以上のように構成したらせん漏洩同軸ケーブルＩＡを上
記従来量同様、第２図Ｂ線で示す加熱温度曲線に基づい
て３０分間加熱した所、従来例のように燃焼することが
ないという結果が得られた。When the helical leakage coaxial cable IA constructed as described above was heated for 30 minutes based on the heating temperature curve shown by line B in Figure 2 in the same way as the conventional quantity described above, it was found that there was no combustion as in the conventional example. It was done.
尚、本実施例の場合、特に支持線５を設けなくてもよい
。In addition, in the case of this embodiment, it is not necessary to provide the support line 5 in particular.
［発明の効果］
本発明は、以上のように内部導体層と外部絶縁体層との
間および外部絶縁体層と外部導体層との間にそれぞれ無
機物からなる耐熱層を設け、更に外被層を難燃性ビニル
又はハロゲンを含有しない難燃性ポリエチレンにより構
成したので、耐熱性。[Effects of the Invention] As described above, the present invention provides a heat-resistant layer made of an inorganic substance between the inner conductor layer and the outer insulator layer and between the outer insulator layer and the outer conductor layer, and further includes an outer covering layer. It is heat resistant because it is made of flame retardant vinyl or halogen-free flame retardant polyethylene.
耐火特性に優れたらせん漏洩同軸ケーブルを提供出来る
。We can provide a spiral leakage coaxial cable with excellent fire resistance.
第１図は本発明の一実施例に係るらせん漏洩同軸ケーブ
ルの外観図、第２図は加熱温度特性試験を示す線図、第
３図は従来例に係るらせん漏洩同軸ケーブルの外観図で
ある。
１・・・・・・・・・磁性コア
２・・・・・・・・・内部導体層
３・・・・・・・・・外部絶縁体層
４・・・・・・・・・外部導体層
６・・・・・・・・・外被層
７・・・・・・・・・耐熱層
８・・・・・・・・・耐熱層Fig. 1 is an external view of a helical leakage coaxial cable according to an embodiment of the present invention, Fig. 2 is a diagram showing a heating temperature characteristic test, and Fig. 3 is an external view of a helical leakage coaxial cable according to a conventional example. . 1...Magnetic core 2...Inner conductor layer 3...Outer insulator layer 4...Outer Conductor layer 6......Outer layer 7...Heat-resistant layer 8...Heat-resistant layer
Claims (1)
状に巻回してなる内部導体層を設け、その上部に外部絶
縁体層を介して外部導体をらせん状に巻回してなる外部
導体層を設けて、その外周を外被層で被覆したらせん漏
洩同軸ケーブルにおいて、 前記外部絶縁体層の一部または全部の層を架橋ポリエチ
レンにより形成するとともに、前記内部導体層と前記外
部絶縁体層との間および前記外部絶縁体層と前記外部導
体層の間にそれぞれ耐熱層を設け、更に前記外被層を難
燃性ビニルまたはハロゲンを含有しない難燃性ポリエチ
レンにより構成したことを特徴とするらせん漏洩同軸ケ
ーブル。[Claims] An inner conductor layer formed by spirally winding an inner conductor is provided on an inner insulator layer made of a magnetic material, and an outer conductor is spirally wound on top of the inner conductor layer with an outer insulator layer interposed therebetween. A helical leakage coaxial cable is provided with an outer conductor layer formed by turning the outer conductor layer, and the outer periphery of the coaxial cable is covered with an outer jacket layer. A heat-resistant layer is provided between the external insulating layer and between the external insulating layer and the external conductor layer, and the outer covering layer is made of flame-retardant vinyl or halogen-free flame-retardant polyethylene. A spiral leakage coaxial cable characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1219620A JPH0382204A (en) | 1989-08-25 | 1989-08-25 | Spiral leakage coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1219620A JPH0382204A (en) | 1989-08-25 | 1989-08-25 | Spiral leakage coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0382204A true JPH0382204A (en) | 1991-04-08 |
Family
ID=16738383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1219620A Pending JPH0382204A (en) | 1989-08-25 | 1989-08-25 | Spiral leakage coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0382204A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002260453A (en) * | 2001-03-02 | 2002-09-13 | Mitsubishi Cable Ind Ltd | Heat-resistant roadside communication coaxial cable |
| JP2020058067A (en) * | 2019-12-20 | 2020-04-09 | 日立金属株式会社 | Coaxial cable and manufacturing method of the same |
| CN111403099A (en) * | 2020-03-23 | 2020-07-10 | 杭州富通电线电缆有限公司 | Leakage coaxial cable |
-
1989
- 1989-08-25 JP JP1219620A patent/JPH0382204A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002260453A (en) * | 2001-03-02 | 2002-09-13 | Mitsubishi Cable Ind Ltd | Heat-resistant roadside communication coaxial cable |
| JP2020058067A (en) * | 2019-12-20 | 2020-04-09 | 日立金属株式会社 | Coaxial cable and manufacturing method of the same |
| CN111403099A (en) * | 2020-03-23 | 2020-07-10 | 杭州富通电线电缆有限公司 | Leakage coaxial cable |
| CN111403099B (en) * | 2020-03-23 | 2021-11-09 | 杭州富通电线电缆有限公司 | Leakage coaxial cable |
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