WO2012137850A1 - 通信ケーブル - Google Patents
通信ケーブル Download PDFInfo
- Publication number
- WO2012137850A1 WO2012137850A1 PCT/JP2012/059261 JP2012059261W WO2012137850A1 WO 2012137850 A1 WO2012137850 A1 WO 2012137850A1 JP 2012059261 W JP2012059261 W JP 2012059261W WO 2012137850 A1 WO2012137850 A1 WO 2012137850A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulator
- communication cable
- mhz
- film layer
- sheath
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1808—Construction of the conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/20—Cables having a multiplicity of coaxial lines
Definitions
- the present invention relates to a communication cable.
- a conventional electric wire includes an insulating layer provided on a conductor and a shield layer formed on the insulating layer, and the insulating layer and the shield layer are covered with a sheath.
- a plasticizer is often used for the sheath, and the plasticizer may volatilize and move to an insulator inside the shield layer in a high temperature environment.
- the plasticizer moves to the insulator, the dielectric constant of the insulator increases, and the shielding performance of the electric wire decreases.
- the present invention has been made to solve such problems, and an object of the present invention is to provide a communication cable that can suppress a decrease in shielding performance.
- the communication cable of the present invention includes one or a plurality of conductors, an insulator coated on the conductor, a shield layer formed on the outer periphery of the insulator, an insulating sheath covering the shield layer, an insulation A biaxially stretched film layer provided between the body and the sheath and covering the outer periphery of the insulator.
- the communication cable of the present invention includes a biaxially stretched film layer that is provided between the insulator and the sheath and covers the outer periphery of the insulator.
- the film layer is preferably provided between the sheath and the shield layer.
- the film layer is provided between the sheath and the shield layer.
- a film layer is interposed between the shield layer and the insulator, there is a possibility that the capacitance and characteristic impedance between the conductor and the shield layer will be affected somewhat.
- by providing a film layer between the sheath and the shield layer such a situation can be prevented, and deterioration of the shield performance can be further suppressed.
- FIG. 1A and 1B are diagrams showing a communication cable according to an embodiment of the present invention, where FIG. 1A is a cross-sectional view and FIG. 1B is a side view. .
- FIG. 2 is a graph showing attenuation characteristics of the communication cable according to the present embodiment.
- FIG. 3 is a cross-sectional view showing a modification of the communication cable according to the present embodiment.
- FIGS. 1A and 1B are diagrams showing a communication cable according to an embodiment of the present invention, where FIG. 1A is a cross-sectional view and FIG. 1B is a side view.
- the communication cable 1 includes a single conductor 10, an insulator 20 coated on the conductor 10, and a shield provided on the outer periphery of the insulator 20. Layer 30.
- an annealed copper wire for example, an annealed copper wire, a silver plated annealed copper wire, a tin plated annealed copper wire, a tin plated copper alloy wire, or the like is used.
- the number of the conductors 10 is one, but two or more may be used as will be described later.
- the insulator 20 is a member coated on the conductor 10.
- PE polyethylene
- PP polypropylene
- This insulator 20 has a dielectric constant of 3.0 F / m or less.
- the shield layer 30 is formed by making a plurality of conductor wires such as copper wires into a bundle and weaving the bundle.
- the sheath 40 is an insulator that covers the outer periphery of the shield layer 30.
- the communication cable 1 is easily exposed to a high temperature environment, for example, when used in an automobile.
- the plasticizer added to the sheath 40 may volatilize and move to the insulator 20 disposed inside the shield layer 30.
- the dielectric constant of the insulator 20 increases. As a result, the attenuation amount of noise is reduced, and the shielding performance may be reduced.
- the dielectric constant and dielectric loss tangent of the insulator 20 increase.
- the degree of this transition varies depending on the location in the insulator 20.
- the impedance is greatly disturbed, and the attenuation amount of noise is greatly reduced.
- the amount of decrease in the amount of noise attenuation increases as the frequency of the irradiated noise increases.
- the communication cable 1 further includes a film layer 50 in addition to the above configuration.
- the film layer 50 is a sheet-like member interposed between the sheath 40 and the insulator 20.
- the film layer 50 is made of PET (polyethylene terephthalate), and has sufficient fineness so that the plasticizer does not enter.
- the film layer 50 may be made of a fluororesin.
- the communication cable 1 configured as described above, even if the plasticizer added to the sheath 40 volatilizes in a high temperature environment, the volatilized plasticizer is blocked by the film layer 50 and thus does not easily reach the insulator 20. . For this reason, the fall of the attenuation amount of noise is suppressed.
- the film layer 50 is a biaxially stretched film formed by stretching a thermoplastic film in two longitudinal and transverse directions at a high temperature. For this reason, the film layer 50 has high strength in the vertical direction and the horizontal direction. Therefore, when the communication cable 1 is bent and wired, the film layer 50 is not easily broken. Thereby, the fall of the attenuation amount of a noise is suppressed irrespective of a routing situation.
- the film layer 50 is preferably interposed between the sheath 40 and the shield layer 30. If the film layer 50 is interposed between the shield layer 30 and the insulator 20, there is a risk of some influence on the capacitance / characteristic impedance. When the capacitance / characteristic impedance changes, the dielectric constant changes and the noise attenuation changes. On the other hand, when a film layer is interposed between the sheath 40 and the shield layer 30, such a situation is prevented, and a decrease in shield performance is suppressed.
- the film layer 50 preferably has a thickness of at least 4 ⁇ m. Thereby, it is prevented that the pinhole defect
- FIG. 2 is a graph for explaining the attenuation characteristics of the communication cable 1 according to the present embodiment.
- a tin-plated annealed copper stranded wire having 7 / 0.18 wires / mm and an outer diameter of 0.54 mm was used for the conductor 10.
- the insulator 20 was a crosslinked PE having a thickness of 0.53 mm and an outer diameter of 1.6 mm.
- heat-resistant PVC polyvinyl chloride
- a PET film was used for the film layer 50 and was interposed between the shield layer 30 and the insulator 20.
- the same conductor and insulator as in the example were used for the electric wire of the comparative example, and a tin-plated annealed copper wire braid having an outer diameter of about 2.1 mm was used for the shield layer.
- heat-resistant PVC having a thickness of about 0.5 mm and an outer diameter of 3.1 ⁇ 0.2 mm was used.
- the attenuation amount of noise after exposing the communication cable 1 according to the example in an atmosphere of 105 ° C. for 168 hours is 0.84 dB / m at 900 MHz and 1.14 dB / m at 1500 MHz. It was 1.19 dB / m at 1600 MHz. Moreover, it was 1.33 dB / m at 1900 MHz, 1.37 dB / m at 2000 MHz, and 1.60 dB / m at 2500 MHz. Furthermore, it was 1.63 dB / m at 2600 MHz and 1.79 dB / m at 3000 MHz.
- the attenuation amount of noise hardly changed.
- the attenuation amount of the noise before exposing for 168 hours in 105 degreeC atmosphere is 0.92 dB / m at 900 MHz, 1.23 dB / m at 1500 MHz, and 1.29 dB / m at 1600 MHz. m. Further, it was 1.43 dB / m at 1900 MHz, 1.48 dB / m at 2000 MHz, and 1.71 dB / m at 2500 MHz. Furthermore, it was 1.75 dB / m at 2600 MHz and 1.90 dB / m at 3000 MHz.
- the attenuation amount of the noise after exposing the electric wire according to the example in the atmosphere of 105 ° C. for 168 hours is 1.24 dB / m at 900 MHz, 1.70 dB / m at 1500 MHz, and 1600 MHz. It was 1.78 dB / m. Moreover, it was 2.00 dB / m in 1900 MHz, 2.06 dB / m in 2000 MHz, and 2.41 dB / m in 2500 MHz. Furthermore, it was 2.46 dB / m at 2600 MHz and 2.69 dB / m at 3000 MHz.
- the amount of noise attenuation greatly decreased when exposed to a high temperature environment for a long time.
- the communication cable 1 according to the example in which the migration of the plasticizer is prevented by the film layer 50 has better attenuation characteristics than the conventional electric wire. .
- the communication cable 1 includes the biaxially stretched film layer 50 that is provided between the insulator 20 and the sheath 40 and covers the outer periphery of the insulator 20.
- the plasticizer from the sheath 40 but also the transition of the plasticizer from the members and the like existing in the vicinity to the insulator 20 when the communication cable 1 is used can be similarly blocked, and the deterioration of the shielding performance can be suppressed. Furthermore, since the film layer 50 is biaxially stretched, the strength is high in the vertical direction and the horizontal direction. Thereby, even if the communication cable 1 is bent and wired, the film layer 50 is not easily broken. As a result, according to the communication cable of the present invention, it is possible to suppress a decrease in shield performance regardless of the routing situation.
- the film layer 50 is provided between the sheath 40 and the shield layer 30.
- the film layer 50 is interposed between the shield layer 30 and the insulator 20, there is a possibility that the electrostatic capacitance and characteristic impedance between the conductor 10 and the shield layer 30 are somewhat affected.
- the film layer 50 between the sheath 40 and the shield layer 30 such a situation can be prevented, and a reduction in noise attenuation can be further suppressed.
- FIG. 3 is a cross-sectional view showing a modification of the communication cable 1 according to the present embodiment.
- the communication cable 1 includes two conductors 10 and an insulator 20 that covers each of the two conductors 10, and these are collectively covered by the shield layer 30. It has been broken.
- the communication cable 1 is not limited to the example illustrated in FIG. 3, and may include three or more conductors 10.
- the conductor 10 may be comprised by the strand wire.
- the film layer 50 is provided between the shield layer 30 and the sheath 40, but not limited to this, the film layer 50 is provided between the insulator 20 and the shield layer 30. May be. Even when this configuration is adopted, a decrease in shielding performance is suppressed.
- the present invention is useful in that it can provide a communication cable that can suppress a decrease in shielding performance.
Landscapes
- Communication Cables (AREA)
- Insulated Conductors (AREA)
Abstract
Description
さらに、フィルム層は二軸延伸されているため、縦方向及び横方向に強度が高い。これにより、通信ケーブルが屈曲等して配索されたとしても、フィルム層が破けにくい。この結果、本発明の通信ケーブルによれば、配索状況に依らずにシールド性能の低下を抑制できる。
さらに、フィルム層50は二軸延伸されているため、縦方向及び横方向に強度が高い。これにより、通信ケーブル1が屈曲等して配索されたとしても、フィルム層50が破断されにくい。この結果、本発明の通信ケーブルによれば、配索状況に依らずにシールド性能の低下を抑制できる。
10…導体
20…絶縁体
30…シールド層
40…シース
50…フィルム層
Claims (2)
- 1本又は複数本の導体と、
前記導体上に被覆された絶縁体と、
前記絶縁体の外周に形成されたシールド層と、
前記シールド層を被覆する絶縁性のシースと、
前記絶縁体と前記シースとの間に設けられ、前記絶縁体の外周を覆う二軸延伸されたフィルム層と、
を備える通信ケーブル。 - 前記フィルム層は、前記シースと前記シールド層との間に設けられている、
請求項1に記載の通信ケーブル。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137026286A KR20130133033A (ko) | 2011-04-05 | 2012-04-04 | 통신 케이블 |
CN201280017519.XA CN103477400B (zh) | 2011-04-05 | 2012-04-04 | 通信电缆 |
DE112012001595.9T DE112012001595T5 (de) | 2011-04-05 | 2012-04-04 | Datenübertragungskabel |
US14/009,611 US9466406B2 (en) | 2011-04-05 | 2012-04-04 | Communication cable |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-083926 | 2011-04-05 | ||
JP2011083926A JP5984338B2 (ja) | 2011-04-05 | 2011-04-05 | 耐移行性通信ケーブル |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012137850A1 true WO2012137850A1 (ja) | 2012-10-11 |
Family
ID=46969243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/059261 WO2012137850A1 (ja) | 2011-04-05 | 2012-04-04 | 通信ケーブル |
Country Status (6)
Country | Link |
---|---|
US (1) | US9466406B2 (ja) |
JP (1) | JP5984338B2 (ja) |
KR (1) | KR20130133033A (ja) |
CN (1) | CN103477400B (ja) |
DE (1) | DE112012001595T5 (ja) |
WO (1) | WO2012137850A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014087933A1 (ja) * | 2012-12-07 | 2014-06-12 | 矢崎総業株式会社 | 同軸ケーブル |
WO2016056636A1 (ja) * | 2014-10-10 | 2016-04-14 | 矢崎総業株式会社 | ワイヤハーネス及び同軸電線 |
JP2016081593A (ja) * | 2014-10-10 | 2016-05-16 | 矢崎総業株式会社 | ワイヤーハーネス |
JP2016081592A (ja) * | 2014-10-10 | 2016-05-16 | 矢崎総業株式会社 | 同軸電線及びワイヤーハーネス |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101983719B1 (ko) | 2016-12-22 | 2019-05-29 | 정만식 | 교각 구조물용 영구거푸집 및 이를 이용한 교각 시공방법 |
JP6829819B2 (ja) * | 2017-05-02 | 2021-02-17 | 日立金属株式会社 | Lanケーブル |
US11636958B2 (en) * | 2019-09-04 | 2023-04-25 | Yazaki Corporation | Communication cable and wire harness |
DE102020116643A1 (de) | 2020-06-24 | 2021-12-30 | Kromberg & Schubert GmbH Cable & Wire | Datenleitung |
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JPH04190511A (ja) * | 1990-11-22 | 1992-07-08 | Yokohama Rubber Co Ltd:The | 電力ケーブル用遮水テープ |
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JP2009146704A (ja) | 2007-12-13 | 2009-07-02 | Autonetworks Technologies Ltd | 同軸ケーブル |
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-
2011
- 2011-04-05 JP JP2011083926A patent/JP5984338B2/ja active Active
-
2012
- 2012-04-04 KR KR1020137026286A patent/KR20130133033A/ko not_active Application Discontinuation
- 2012-04-04 DE DE112012001595.9T patent/DE112012001595T5/de not_active Withdrawn
- 2012-04-04 CN CN201280017519.XA patent/CN103477400B/zh active Active
- 2012-04-04 US US14/009,611 patent/US9466406B2/en active Active
- 2012-04-04 WO PCT/JP2012/059261 patent/WO2012137850A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH04190511A (ja) * | 1990-11-22 | 1992-07-08 | Yokohama Rubber Co Ltd:The | 電力ケーブル用遮水テープ |
JPH10228823A (ja) * | 1997-02-13 | 1998-08-25 | Fukuoka Cloth Kogyo Kk | 通信ケーブル用抑え巻きフィルムテープ |
JP2001076550A (ja) * | 1999-07-08 | 2001-03-23 | Dainippon Printing Co Ltd | 難燃性フラットケーブル、ヒートシール性テープ及びその製造方法 |
JP2001229920A (ja) * | 2000-02-21 | 2001-08-24 | Shin Kobe Electric Mach Co Ltd | 密閉形鉛蓄電池の製造方法 |
JP2007005096A (ja) * | 2005-06-22 | 2007-01-11 | Sumitomo Electric Ind Ltd | シールド電線 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2014087933A1 (ja) * | 2012-12-07 | 2014-06-12 | 矢崎総業株式会社 | 同軸ケーブル |
US10068686B2 (en) | 2012-12-07 | 2018-09-04 | Yazaki Corporation | Coaxial cable |
WO2016056636A1 (ja) * | 2014-10-10 | 2016-04-14 | 矢崎総業株式会社 | ワイヤハーネス及び同軸電線 |
JP2016081593A (ja) * | 2014-10-10 | 2016-05-16 | 矢崎総業株式会社 | ワイヤーハーネス |
JP2016081592A (ja) * | 2014-10-10 | 2016-05-16 | 矢崎総業株式会社 | 同軸電線及びワイヤーハーネス |
US9911522B2 (en) | 2014-10-10 | 2018-03-06 | Yazaki Corporation | Wiring harness and coaxial wire |
Also Published As
Publication number | Publication date |
---|---|
JP2012221628A (ja) | 2012-11-12 |
CN103477400B (zh) | 2018-01-23 |
KR20130133033A (ko) | 2013-12-05 |
DE112012001595T5 (de) | 2014-03-06 |
JP5984338B2 (ja) | 2016-09-06 |
US9466406B2 (en) | 2016-10-11 |
CN103477400A (zh) | 2013-12-25 |
US20140027149A1 (en) | 2014-01-30 |
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