JPH09306250A - Fan-shaped power cable - Google Patents
Fan-shaped power cableInfo
- Publication number
- JPH09306250A JPH09306250A JP14100596A JP14100596A JPH09306250A JP H09306250 A JPH09306250 A JP H09306250A JP 14100596 A JP14100596 A JP 14100596A JP 14100596 A JP14100596 A JP 14100596A JP H09306250 A JPH09306250 A JP H09306250A
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- fan
- outer circumference
- power cable
- insulator
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は、その複数本が全
体として横断面が円形となるように撚り合わされて、管
路内に引き入れ布設されて使用される横断面が扇形の電
力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 power cable having a fan-shaped cross section, which is twisted together so that the cross section is circular as a whole and is drawn and laid in a pipe. is there.
【0002】[0002]
【従来の技術】その複数本が全体としての横断面が円形
となるように撚り合わされる横断面扇形の従来の電力ケ
ーブルは図2に示すように、横断面が扇形に圧縮された
導体1の外周に所定厚さの肉厚を有する絶縁体2を設
け、さらにその絶縁体2の外周に、該絶縁体2を機械的
外傷から保護するのに十分な厚さの一様な肉厚T2 を有
する保護シース3を設けている。そして、この横断面扇
形の電力ケーブルは、その複数本を全体としての横断面
外周形状が円形となるようにコンパクトに撚り合わせる
ことができるので、管路4内に徒な空間を残すことなく
管路内径略一杯に占積率を高くして布設することができ
る。2. Description of the Related Art As shown in FIG. 2, a conventional electric power cable having a fan-shaped cross section is formed by twisting a plurality of such wires so that the cross section as a whole is circular. An insulator 2 having a predetermined thickness is provided on the outer circumference, and a uniform thickness T 2 is provided on the outer circumference of the insulator 2 with a thickness sufficient to protect the insulator 2 from mechanical damage. Is provided with a protective sheath 3. Further, this fan-shaped power cable having a cross section can be twisted compactly so that the outer shape of the cross section as a whole becomes circular, so that there is no unnecessary space in the conduit 4 and the power cable is It can be installed with a high space factor to fill the inner diameter of the passage.
【0003】[0003]
【発明が解決しようとする課題】しかるに、電力需用の
増大等の理由により、より容量の大なるケーブルへの引
き換えが必要になったとき、容量の大なるケーブルは一
般にそのサイズ(直径)が大きくなるために、往々にし
て管路4のサイズ(内径)が小さすぎることになり、そ
のため容量アップした新規なケーブルの管路4への引き
入れ布設ができなくなる不都合を招くものであった。However, when it becomes necessary to exchange a cable with a larger capacity for reasons such as an increase in power demand, a cable with a larger capacity generally has a size (diameter). Since the size is increased, the size (inner diameter) of the conduit 4 is often too small, which causes a problem that a new cable having an increased capacity cannot be drawn and laid in the conduit 4.
【0004】この発明は、上述の問題を有利に解決した
扇形電力ケーブルを提供することを目的とするものであ
る。An object of the present invention is to provide a fan-shaped power cable that advantageously solves the above problems.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するため
に、この発明においては、導体とその外側の絶縁体とそ
の外側の保護シースとよりなる横断面が扇形の電力ケー
ブルにおいて、前記保護シースにおける半径部の肉厚を
円弧部の肉厚よりも薄くさせた。In order to achieve the above-mentioned object, in the present invention, in a power cable having a fan-shaped cross section, the conductor comprises a conductor, an insulator outside the conductor, and a protective sheath outside the conductor. The wall thickness of the radius part in the above was made thinner than the wall thickness of the arc part.
【0006】[0006]
【発明の実施の形態】以下、この発明に係る扇形電力ケ
ーブルの実施の形態を図示の例によって説明する。図1
はこの発明の一実施形態を示すものであって、横断面が
扇形となるように圧縮成形された銅撚線等からなる導体
1の外周に、所定の電気的絶縁厚さの肉厚を有する架橋
ポリエチレン等の絶縁体2が設けられ、さらに該絶縁体
2の外周に、ポリ塩化ビニル等の保護シース3が設けら
れている。そして、前記保護シース3は、その半径部3
1の肉厚をT1 、円弧部32の肉厚をT2 としたとき、
両肉厚がT1 <T2 となるように形成されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a fan-shaped power cable according to the present invention will be described below with reference to illustrated examples. FIG.
1 shows an embodiment of the present invention, in which a conductor 1 made of a copper stranded wire or the like compression-molded so that its cross section has a fan shape has a predetermined electrical insulation thickness on the outer circumference. An insulator 2 such as cross-linked polyethylene is provided, and a protective sheath 3 such as polyvinyl chloride is provided on the outer periphery of the insulator 2. The protective sheath 3 has a radial portion 3
When the wall thickness of 1 is T 1 and the wall thickness of the arc portion 32 is T 2 ,
Both wall thicknesses are formed so that T 1 <T 2 .
【0007】横断面扇形の電力ケーブルは、その複数本
が全体としての横断面外周形状が円形となるように直径
Dに撚り合わされたとき、前記円弧部32が外周面とし
て露出し、半径部31は隣接するケーブル同士が密接し
合う側面部となり、外部には露出しない。それ故、円弧
部32の前記肉厚T2 は、絶縁体2を機械的外傷から保
護するのに十分な従来と同等の厚さに形成されるが、半
径部31の前記肉厚T1 はそのような考慮を払う必要が
ないので、つまりシース相互の擦れによる摩耗が生じる
程度であるので、それを考慮した程度の可及的薄い厚さ
に形成する。When a plurality of electric power cables having a fan-shaped cross section are twisted into a diameter D so that the outer peripheral shape of the whole cross section is circular, the arc portion 32 is exposed as the outer peripheral surface and the radius portion 31 is formed. Is a side part where adjacent cables are in close contact with each other and is not exposed to the outside. Therefore, the wall thickness T 2 of the circular arc portion 32 is formed to have a thickness equivalent to the conventional one sufficient to protect the insulator 2 from mechanical damage, but the wall thickness T 1 of the radius portion 31 is Since it is not necessary to take such consideration into consideration, that is, the wear is caused by the friction between the sheaths, the thickness is made as thin as possible.
【0008】このように、円弧部32の肉厚T2 に対し
て半径部31の肉厚T1 を可及的に薄くすることによ
り、導体1の断面積を従来のものよりも大きくすること
ができ、したがって従来よりも大サイズの導体1を有す
るより容量の大なるケーブルを管路4内に布設すること
が可能となる。In this way, by making the wall thickness T 1 of the radius portion 31 as thin as possible with respect to the wall thickness T 2 of the arc portion 32, the cross-sectional area of the conductor 1 can be made larger than that of the conventional one. Therefore, it is possible to lay a cable having a larger capacity and having a conductor 1 having a larger size than the conventional one in the conduit 4.
【0009】[0009]
【発明の効果】以上より明らかなようにこの発明によれ
ば、横断面扇形の電力ケーブルにおいて、保護シース3
における半径部31の肉厚T1 が円弧部32の肉厚T2
よりも薄く形成されているので、横断面外周形状が円形
の撚り合わせケーブル全体としての直径Dが従来と同じ
であるにもかかわらず、導体1を従来よりも大サイズの
ものとすることができ、そのためサイズ(容量)アップ
したケーブルを既設の管路4内に布設することが可能と
なる効果が得られる。As is apparent from the above, according to the present invention, the protective sheath 3 is provided in the electric power cable having a fan-shaped cross section.
The wall thickness T 1 of the radius portion 31 in the circle is the wall thickness T 2 of the arc portion 32.
Since the conductor 1 is formed thinner than the conventional one, the conductor 1 can be made larger than the conventional one even though the diameter D of the entire twisted cable having a circular outer peripheral shape is the same as the conventional one. Therefore, it is possible to obtain the effect that it is possible to lay a cable having an increased size (capacity) in the existing pipeline 4.
【図1】この発明に係る扇形電力ケーブルの一実施形態
を示す横断面図である。FIG. 1 is a cross-sectional view showing an embodiment of a fan-shaped power cable according to the present invention.
【図2】従来の扇形電力ケーブルを示す横断面図であ
る。FIG. 2 is a cross-sectional view showing a conventional fan-shaped power cable.
1 導体 2 絶縁体 3 保護シース 31 半径部 32 円弧部 4 管路 1 Conductor 2 Insulator 3 Protective sheath 31 Radius 32 Arc part 4 Pipeline
Claims (1)
その外側の保護シース(3)とよりなる横断面が扇形の
電力ケーブルであって、前記保護シース(3)における
半径部(31)の肉厚(T1 )が円弧部(32)の肉厚
(T2 )よりも薄く形成されていることを特徴とする扇
形電力ケーブル。1. A power cable having a fan-shaped cross section, comprising a conductor (1), an insulator (2) on the outside of the conductor (2), and a protective sheath (3) on the outside thereof, the radius portion of the protective sheath (3). A fan-shaped power cable, wherein the wall thickness (T 1 ) of (31) is formed thinner than the wall thickness (T 2 ) of the circular arc portion (32).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14100596A JPH09306250A (en) | 1996-05-10 | 1996-05-10 | Fan-shaped power cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14100596A JPH09306250A (en) | 1996-05-10 | 1996-05-10 | Fan-shaped power cable |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09306250A true JPH09306250A (en) | 1997-11-28 |
Family
ID=15281975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14100596A Pending JPH09306250A (en) | 1996-05-10 | 1996-05-10 | Fan-shaped power cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09306250A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008200490A (en) * | 1998-03-20 | 2008-09-04 | Cook Urological Inc | Minimally invasive medical object retrieval device |
JP2015082407A (en) * | 2013-10-23 | 2015-04-27 | 矢崎総業株式会社 | Wire harness |
-
1996
- 1996-05-10 JP JP14100596A patent/JPH09306250A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008200490A (en) * | 1998-03-20 | 2008-09-04 | Cook Urological Inc | Minimally invasive medical object retrieval device |
JP2015082407A (en) * | 2013-10-23 | 2015-04-27 | 矢崎総業株式会社 | Wire harness |
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