JPH0935543A - Cable - Google Patents

Cable

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Publication number
JPH0935543A
JPH0935543A JP20896495A JP20896495A JPH0935543A JP H0935543 A JPH0935543 A JP H0935543A JP 20896495 A JP20896495 A JP 20896495A JP 20896495 A JP20896495 A JP 20896495A JP H0935543 A JPH0935543 A JP H0935543A
Authority
JP
Japan
Prior art keywords
cable
insulator
water
wire
cavity
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
JP20896495A
Other languages
Japanese (ja)
Inventor
Yuichi Yamada
裕一 山田
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.)
KANEKO CODE KK
Original Assignee
KANEKO CODE KK
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 KANEKO CODE KK filed Critical KANEKO CODE KK
Priority to JP20896495A priority Critical patent/JPH0935543A/en
Publication of JPH0935543A publication Critical patent/JPH0935543A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To solve impropriety received from a connected cable to an equipment of moving in the water, by forming a cavity inside the cable, and constituting its apparent specific gravity smaller than 1. SOLUTION: A plurality of electric core wires 2 are left as previously stranded on a tube-shaped insulator 1b, to extrusion-form an insulator 1a on this core wire by a separate process so as to form a cavity 3a. In this way, ratio of weight of a cable to weight of water of equal volume to the external shape, that is, apparent specific gravity of the cable is formed so as to be smaller than 1, to be made floatable in the water. By floating the cable in the water, impropriety of obstructing moving, entangling the cable, etc., in an equipment of connecting this cable to be used in the water, is eliminated.

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、水中で使用する機器用
のケーブルに関する。
FIELD OF THE INVENTION This invention relates to cables for equipment used underwater.

【0002】[0002]

【従来の技術】従来技術のケーブルは図5に示すよう
に、電線心線2を外被としての絶縁体1で覆ったもので
あり、ケーブルの重量と、外形が等体積の水の重量との
比、すなわちケーブルの見掛け上の比重が1より大き
い。一例としてリモートコントロールで操作するプール
清掃機など、水中で使用する機器に動力、制御信号を伝
達する従来技術の構造のケーブルを接続した場合、ケー
ブルが水に沈むため、機器が水中移動の際進路を妨害し
たり、からまったりする不都合があった。
2. Description of the Related Art As shown in FIG. 5, a prior art cable has a wire core 2 covered with an insulator 1 as a jacket, and has a weight equal to that of water whose outer shape is equal to that of water. , The apparent specific gravity of the cable is greater than 1. For example, if a cable with a conventional technology that transmits power and control signals is connected to equipment used underwater, such as a pool cleaner that is operated by remote control, the cable will sink into the water, and the equipment will travel when traveling underwater. There was the inconvenience of disturbing or getting tangled.

【0003】[0003]

【発明が解決しようとする課題】本発明は、水中を移動
する機器が、接続されているケーブルで進路妨害を受け
たり、そのケーブルがからまったりする不都合を解決す
るための、水に浮くケーブルの提供を目的とするもので
ある。
SUMMARY OF THE INVENTION The present invention relates to a cable that floats in water for solving the inconvenience that an apparatus moving underwater is obstructed by a connected cable and the cable is entangled. It is intended to be provided.

【0004】[0004]

【課題を解決するための手段】電線心線2を被覆する絶
縁体1bと、その外部に空洞3bを形成するように絶縁
体1aを押出成形することにより、ケーブルの重量と、
外形が等体積の水の重量との比、すなわちケーブルの見
掛け上の比重が1より小さくなるように構成して、水に
浮くことを可能とする手段を講じたものである。
[Means for Solving the Problems] Insulator 1b covering electric wire core wire 2 and extruding insulator 1a so as to form cavity 3b on the outside thereof, the weight of the cable,
The ratio of the outer shape to the weight of water having the same volume, that is, the apparent specific gravity of the cable is smaller than 1, and means for allowing the cable to float on water is taken.

【0005】[0005]

【作用】本発明は、上記の手段を講ずることにより、見
掛け上1より小さい比重を有するケーブルは水に浮くの
で、これを接続した水中で使用する機器、例えばプール
清掃機がリモートコントロールでプールの全床面,壁面
を自由に移動するように操作しても、機器の移動がケー
ブルによって妨害されたり、またケーブルがからまって
しまうことがなく、従来の不都合が解消される。
According to the present invention, the cable having an apparent specific gravity of less than 1 floats on the water by taking the above-mentioned means. Even if the operation is performed so as to move freely on all floors and walls, the movement of the device is not obstructed by the cable, and the cable is not entangled, and the conventional inconvenience is solved.

【0006】[0006]

【実施例】以下、図面に示す実施例についてさらに詳細
に説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below in more detail.

【0007】図1は本発明のケーブルの実施例の断面図
を示す。本発明の課題を解決するための手段に述べたよ
うに、ケーブルの見掛け上の比重を1より小さくするた
めの条件を以下に説明する。便宜上、ケーブルの単位長
(1m=100cm)について考えることとし、使用す
る記号(単位)説明は次の通りである。 Da(cm):絶縁体1aの外径 Sab(cm):絶縁体1a,絶縁体1bの合計の断
面積 ρab(g/cm):絶縁体1a,絶縁体1bの材料
の密度 Ww(g):全電線心線2の合計重量 Wc(g):ケーブル単位長(1m)の重量 W(4℃)(g):ケーブル単位長(1m)と外径が同
一の4℃の水の重量 ρ(4℃)(g/cm):4℃の水の密度(=1g/
cm) Sc:ケーブルの見掛け上の比重 上述の記号により関係式を記述すれば Wc=Sab×100×ρab+Ww 式1 W(4℃)=(π/4)(Da)×100×ρ(4℃) 式2 Sc=Wc/W(4℃) 式3 Sc<1の場合、本発明の目的が実現可能である。
FIG. 1 shows a cross-sectional view of an embodiment of the cable of the present invention. As described in the means for solving the problems of the present invention, the conditions for making the apparent specific gravity of the cable smaller than 1 will be described below. For convenience, the unit length of the cable (1 m = 100 cm) will be considered, and the symbols (units) used will be described below. Da (cm): outer diameter of the insulator 1a Sab (cm 2 ): total cross-sectional area of the insulator 1a and the insulator 1b ρab (g / cm 3 ): density of the material of the insulator 1a and the insulator 1b Ww ( g): Total weight of all core wires 2 Wc (g): Weight of cable unit length (1 m) W (4 ° C) (g): Water of 4 ° C with the same outer diameter as the cable unit length (1 m) Weight ρ (4 ° C.) (g / cm 3 ): Density of water at 4 ° C. (= 1 g /
cm 3 ) Sc: Apparent specific gravity of cable If the relational expression is described by the above symbols, Wc = Sab × 100 × ρab + Ww Equation 1 W (4 ° C.) = (π / 4) (Da) 2 × 100 × ρ ( 4 ° C.) Equation 2 Sc = Wc / W (4 ° C.) Equation 3 In the case of Sc <1, the object of the present invention can be realized.

【0008】実施の数値例を次に示す。 Da=1.6cm,Sab=0.68cm,ρab=
1.4g/cm Ww=97.4g,W(4℃)=201g,Wc=19
3g 上記の数値を式1〜式3で求め、Scを計算すればSc
=0.96となり本ケーブルは水に浮くことが可能であ
る。
Numerical examples of implementation are shown below. Da = 1.6 cm, Sab = 0.68 cm 2 , ρab =
1.4 g / cm 3 Ww = 97.4 g, W (4 ° C.) = 201 g, Wc = 19
3g If the above numerical values are obtained from Equations 1 to 3 and Sc is calculated, Sc
= 0.96, this cable can float in water.

【0009】図2は他の実施例の断面図を示す。図2の
ケーブルは、中心部に電線心線2を有する構造のため、
曲げた場合でも偏平になりにくい特徴がある。ケーブル
の見掛け上の比重を1より小さくするための条件を以下
に説明する。便宜上、ケーブルの単位長(1m=100
cm)について考えることとし、図1と同じ記号説明は
省略し、新しい記号(単位)説明は次の通りである。 Sabc(cm):絶縁体1a,1b,1cの合計の
断面積 ρabc(g/cm):絶縁体1a,1b,1cの材
料の密度 上述の記号により関係式を記述すれば Wc=Sabc×100×ρabc+Ww 式4 Sc=Wc/W(4℃)<1の場合、本発明の目的が実
現可能である。
FIG. 2 shows a sectional view of another embodiment. The cable of FIG. 2 has a core wire 2 at the center,
Even if it is bent, it has the characteristic that it does not easily become flat. The conditions for making the apparent specific gravity of the cable smaller than 1 will be described below. For convenience, the unit length of the cable (1m = 100
cm), the explanation of the same symbols as in FIG. 1 is omitted, and the explanation of new symbols (units) is as follows. Sabc (cm 2 ): Total cross-sectional area of the insulators 1 a, 1 b, 1 c ρ abc (g / cm 3 ): Density of material of the insulators 1 a, 1 b, 1 c If the relational expression is described by the above symbols, Wc = Sabc × 100 × ρabc + Ww Equation 4 When Sc = Wc / W (4 ° C.) <1, the object of the present invention can be realized.

【0010】実施の数値例を次に示す。 Da=1.7cm,Sabc=0.88cm,ρab
c=1.4g/cm Ww=97.4g,W(4℃)=227g,Wc=22
0g 上記の数値を式1〜式4で求め、Scを計算すればSc
=0.97となり本ケーブルは水に浮くことが可能であ
る。
Numerical examples of implementation are shown below. Da = 1.7 cm, Sabc = 0.88 cm 2 , ρab
c = 1.4 g / cm 3 Ww = 97.4 g, W (4 ° C.) = 227 g, Wc = 22
0g If the above numerical values are obtained by Equations 1 to 4 and Sc is calculated, Sc
= 0.97, this cable can float on water.

【0011】図3は他の実施例の断面図を示す。図2の
ケーブルは、押出成形用に特別型のノズル,ダイスを必
要とし、電線心線の構成が変った場合、都度ノズル,ダ
イスを変更する事が必要である。図3は、この問題点を
除き、特別のノズル,ダイスを使用せずチューブ状絶縁
体1b上に電線心線2を巻きつけ、通常の円形のノズ
ル,ダイスを使用して外被の絶縁体1aを押出成形可能
としたものである。ケーブルの見掛け上の比重を1より
小さくするための条件を以下に説明する。便宜上、ケー
ブルの単位長(1m=100cm)について考えること
とし、使用する記号(単位)説明は次の通りである。 Da(cm):絶縁体1aの外径 Db(cm):絶縁体1bの外径 Sa(cm):絶縁体1aの断面積 Sb(cm):絶縁体1bの断面積 ρa(g/cm):絶縁体1aの材料の密度 ρb(g/cm):絶縁体1bの材料の密度 Wa(g):絶縁体1aの単位長(1m=100cm)
の重量 Wb(g):絶縁体1bの単位長(1m=100cm)
の重量 とすれば Wa=Sa×100×ρa 式5 Wb=Sb×100×ρb 式6 次に電線心線の重量を求める。 W(g):電線心線素線単位長(1m=100cm)の
重量 とし、この電線心線素線2をチューブ絶縁体1bの外周
に、よりピッチP(cm)で巻いた場合の状況を、正面
図図6a,側面断面図図6b電線心線素線の展開図図6
cに示す。図6a,図6b、図6cにおいて、記号(単
位)説明は次の通りである。 d(cm):電線心線素線の直径 Dc(cm):層心径(ピッチダイヤメータ) P(cm):よりピッチ(より1回当りのより線中心軸
の長さ) x(cm):より1回当りの電線心線素線の中心軸の長
さ とすると Dc=Db+d 式7 従って、ケーブル単位長(1m=100cm)に対し
て、より込まれている1本の電線心線素線2の長さをl
(cm)とすれば 従って、絶縁体1b上に巻かれている電線心線2の本数
をn本とし、ケーブル単位長(1m)に巻込まれている
全電線心線2の合計重量をWw(g)とすれば 従って Wc(g):ケーブル単位長(1m)の重量は Wc=Wa+Wb+Ww Sc=Wc/W(4℃)<1の場合、本発明の目的が実
現可能である。
FIG. 3 shows a sectional view of another embodiment. The cable of FIG. 2 requires a special type nozzle and die for extrusion molding, and it is necessary to change the nozzle and die each time the configuration of the wire core wire changes. Except for this problem, FIG. 3 shows that the wire core 2 is wound around the tubular insulator 1b without using a special nozzle or die, and the insulator of the jacket is used by using a normal circular nozzle or die. 1a can be extruded. The conditions for making the apparent specific gravity of the cable smaller than 1 will be described below. For convenience, the unit length of the cable (1 m = 100 cm) will be considered, and the symbols (units) used will be described below. Da (cm): Outer diameter of the insulator 1a Db (cm): Outer diameter of the insulator 1b Sa (cm 2 ): Cross-sectional area of the insulator 1a Sb (cm 2 ): Cross-sectional area of the insulator 1b ρa (g / cm 3 ): Density of the material of the insulator 1a ρb (g / cm 3 ): Density of the material of the insulator 1b Wa (g): Unit length of the insulator 1a (1 m = 100 cm)
Weight Wb (g): Unit length of the insulator 1b (1 m = 100 cm)
Wa = Sa × 100 × ρa Equation 5 Wb = Sb × 100 × ρb Equation 6 Next, the weight of the wire core wire is obtained. W (g): Weight of electric wire core wire unit length (1 m = 100 cm), and the situation in which the electric wire core wire 2 is wound around the outer periphery of the tube insulator 1b at a pitch P (cm). , Front view 6a, side cross-sectional view 6b Electric wire development view of core wire
It is shown in c. 6a, 6b, and 6c, symbols (units) are explained as follows. d (cm): Diameter of electric wire core wire Dc (cm): Layer core diameter (pitch diameter) P (cm): More pitch (twisted wire central axis length per time) x (cm) : Assuming that the length of the central axis of the core wire per wire is Dc = Db + d Equation 7 Therefore, with respect to the cable unit length (1 m = 100 cm), the length of one twisted core wire 2 is 1
(Cm) Therefore, if the number of electric wire core wires 2 wound on the insulator 1b is n, and the total weight of all electric wire core wires 2 wound in a cable unit length (1 m) is Ww (g). Therefore, Wc (g): The weight of the cable unit length (1 m) is Wc = Wa + Wb + Ww When Sc = Wc / W (4 ° C.) <1, the object of the present invention can be realized.

【0012】実施の数値例を次に示す。 Da=2.3cm,Db=1.4cm,Sa=0.69
cm,Sb=1.04cm ρa=ρb=1.4g/cm,Wa=96.8g/c
,Wb=145.1g/cm W=22.7g,P=4cm,d=0.35cm,Dc
=1.75cm,n=4 W(4℃)=415.3g,Wc=396.3g 上記の数値を式5〜式11、式3で求め、Scを計算す
れば Sc=0.95 となり本ケーブルは水に浮くことが可能である。
Numerical examples of implementation are shown below. Da = 2.3 cm, Db = 1.4 cm, Sa = 0.69
cm 2, Sb = 1.04cm 2 ρa = ρb = 1.4g / cm 3, Wa = 96.8g / c
m 3 , Wb = 145.1 g / cm 3 W = 22.7 g, P = 4 cm, d = 0.35 cm, Dc
= 1.75 cm, n = 4 W (4 ° C.) = 415.3 g, Wc = 396.3 g When the above numerical values are obtained by Equation 5 to Equation 11 and Equation 3 and Sc is calculated, Sc = 0.95 and the present value is obtained. The cable can float on water.

【0013】図4は他の実施例の断面図を示す。図3の
ケーブルは、チューブ状絶縁体1b上に電線心線2を巻
きつける製造作業工程が必要である。図4はこの巻きつ
け工程を必要とせず、複数(図4の例では2本)のチュ
ーブと電線心線2とを組合わせた上に外被としての絶縁
体1aを中空状に押出成形するので、チューブ状絶縁体
上に電線心線を巻きつける工程を省略できる利点があ
る。この場合、ケーブルの見掛け上の比重を1より小さ
くするための条件を以下に説明する。使用する記号はす
べて図3の場合のものがそのまま使用することができ
る。ただし、チューブ絶縁体1bは2本なので Wb=(Sb×100×ρb)×2 となる。また図1の場合と同様に Ww(g):全電線心線2の合計重量 とすればケーブル単位長(1m=100cm)の重量W
c(g)は Wc=Wa+Wb+Ww =Sa×100×ρa+2(Sb×100×ρb)+Ww 式12 ケーブルの見掛け上の比重Sc=Wc/W(4℃)<1
の場合、本発明の目的が実現可能である。
FIG. 4 shows a sectional view of another embodiment. The cable of FIG. 3 requires a manufacturing work step of winding the core wire 2 around the tubular insulator 1b. FIG. 4 does not require this winding step, and combines a plurality of (two in the example of FIG. 4) tubes and the electric wire core wire 2 and extrudes the insulator 1a as a jacket into a hollow shape. Therefore, there is an advantage that the step of winding the core wire around the tubular insulator can be omitted. In this case, conditions for making the apparent specific gravity of the cable smaller than 1 will be described below. The symbols used in FIG. 3 can be used as they are. However, since there are two tube insulators 1b, Wb = (Sb × 100 × ρb) × 2. As in the case of FIG. 1, Ww (g) is the weight W of the cable unit length (1 m = 100 cm), where Ww (g) is the total weight of all the core wires 2.
c (g) is Wc = Wa + Wb + Ww = Sa × 100 × ρa + 2 (Sb × 100 × ρb) + Ww Formula 12 Apparent specific gravity of cable Sc = Wc / W (4 ° C.) <1
In that case, the object of the present invention can be realized.

【0014】実施の数値例を次に示す。 Da=1.8cm,Db=0.8cm,Sa=0.53
4cm,Sb=0.22cm ρa=ρb=1.4g/cm Ww=97.4g,W(4℃)=254.5g,Wc=
233.8g 上記の数値を式5〜式12で求め、Scを計算すれば Sc=0.92 となり本ケーブルは水に浮くことが可能である。
Numerical examples of implementation are shown below. Da = 1.8 cm, Db = 0.8 cm, Sa = 0.53
4cm 2, Sb = 0.22cm 2 ρa = ρb = 1.4g / cm 3 Ww = 97.4g, W (4 ℃) = 254.5g, Wc =
233.8 g If the above numerical values are obtained by Equations 5 to 12 and Sc is calculated, Sc = 0.92, and this cable can float in water.

【0015】図1〜図4の説明数式において、水は4℃
の密度ρ(4℃)=1g/cmとして説明、計算を行
った。水温が上昇した場合、水は膨張して体積を増す
が、概略の計算には、20℃における体膨張率(0.2
1×10−3)で傾向を推定できる。水温が上昇すれ
ば,水の密度は減少し、ケーブルの浮力は減少するので
水温が25℃になったと仮定して、ケーブルの浮力減少
の程度を推定してみる。4℃でV(4℃)cmの容積
の水が、25℃で容積V(25℃)cmになったとす
れば V(25℃)/V(4℃)=1+0.21×10−3×(25−4) =1.00441 従って、25℃での水の密度ρ(25℃)≒1/1.0
0441=0.9956g/cm 従って、25℃の水の場合は、4℃の水の場合よりもケ
ーブルの浮力は、99.56%(0.44%減)とな
る。従って、4℃の水の場合のケーブルの見掛け上の比
重が0.96〜0.97程度以下であれば、水温が25
℃程度に上昇しても、浮力減少分は、約0.5%程度で
あり、十分浮力は保持可能と判断できる。
1 to 4, the water is 4 ° C.
The density ρ (4 ° C.) = 1 g / cm 3 was explained and calculated. When the water temperature rises, the water expands and increases in volume, but the rough calculation is that the body expansion coefficient (0.2
The tendency can be estimated by 1 × 10 −3 ). If the water temperature rises, the density of water decreases and the buoyancy of the cable decreases, so assuming the water temperature reaches 25 ° C, the degree of decrease in the buoyancy of the cable will be estimated. 4 Water V (4 ℃) cm 3 of volume in ° C. is, if now the volume V (25 ℃) cm 3 at 25 ℃ V (25 ℃) / V (4 ℃) = 1 + 0.21 × 10 - 3 × (25−4) = 1.04441 Therefore, the density ρ of water at 25 ° C. (25 ° C.) ≈1 / 1.0
0441 = 0.9956 g / cm 3 Therefore, in the case of 25 ° C. water, the buoyancy of the cable is 99.56% (0.44% decrease) as compared with the case of 4 ° C. water. Therefore, if the apparent specific gravity of the cable for water at 4 ° C is about 0.96 to 0.97 or less, the water temperature is 25
Even if the temperature rises to about 0 ° C, the decrease in buoyancy is about 0.5%, and it can be judged that sufficient buoyancy can be maintained.

【0016】[0016]

【製造工程実施例】図1の場合、通常電線製造で行われ
る4本の電線心線を撚り合わせる「カッド撚り」したも
のの上に、断面形状に示すようなノズル,ダイスで絶縁
体1a,1bを押出成形する。図2の場合、図1と同様
「カッド撚り」電線心線の上に、断面形状に示すような
ノズル,ダイスで絶縁体1a,1b,1cを押出成形す
る。図3の場合、あらかじめチューブ状の絶縁体1b上
に電線心線n本(図3では4本)をより合わせておき、
別工程でこの上に絶縁体1aを中空状に押出成形する。
図4の場合、チューブ状の絶縁体1bを複数本(図4の
場合は2本)と、対よりした電線心線を組合せ、その上
に絶縁体1aを中空状に押出成形する。
[Manufacturing process example] In the case of FIG. 1, the insulators 1a and 1b are formed by nozzles and dies as shown in the cross-sectional shape on a "quad-twisted" structure in which four core wires are usually twisted in the manufacture of electric wires. Is extruded. In the case of FIG. 2, as in FIG. 1, the insulators 1a, 1b, 1c are extruded on the "quad-twisted" core wire with a nozzle and a die as shown in the sectional shape. In the case of FIG. 3, n wires (4 wires in FIG. 3) of the wire core are twisted together on the tubular insulator 1b in advance,
Insulation 1a is extrusion-molded on this in a separate step.
In the case of FIG. 4, a plurality of tube-shaped insulators 1b (two in the case of FIG. 4) and a pair of wire core wires are combined, and the insulator 1a is extruded in a hollow shape thereon.

【0017】[0017]

【発明の効果】本発明により、水中を移動する機器、例
えばリモートコントロールプール清掃機が、接続されて
いるケーブルで進路妨害を受けたり、そのケーブルがか
らまったりせず、自由に操作を行うことができる。
According to the present invention, a device that moves underwater, such as a remote control pool cleaner, can be freely operated without being obstructed by a connected cable or getting entangled with the cable. it can.

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

【図1】電線心線が中空状の外被の内側面にある本発明
の一実施例を示すケーブルの断面図。
FIG. 1 is a cross-sectional view of a cable showing an embodiment of the present invention in which a core wire of an electric wire is provided on an inner surface of a hollow jacket.

【図2】電線心線が中心部にある本発明の一実施例を示
すケーブルの断面図。
FIG. 2 is a cross-sectional view of a cable showing an embodiment of the present invention in which a wire core is at the center.

【図3】チューブ状の絶縁体の周囲に電線心線を巻きつ
け、その上に外被を押出成形した本発明の一実施例を示
すケーブルの断面図。
FIG. 3 is a cross-sectional view of a cable according to an embodiment of the present invention in which a wire core wire is wound around a tubular insulator, and an outer cover is extruded on the core wire.

【図4】2本のチューブ状絶縁体と電線心線を組合せた
上に外被を押出成形した本発明の一実施例を示すケーブ
ルの断面図。
FIG. 4 is a cross-sectional view of a cable according to an embodiment of the present invention in which an outer jacket is extruded on a combination of two tubular insulators and a core wire of an electric wire.

【図5】従来のケーブルの一例の断面図。FIG. 5 is a cross-sectional view of an example of a conventional cable.

【図6a】絶縁体の上に電線心線1本をピッチPで巻き
つけた状態を示す正面図。
FIG. 6a is a front view showing a state where one core wire of an electric wire is wound around an insulator at a pitch P;

【図6b】図6aの側面断面図。6b is a side sectional view of FIG. 6a.

【図6c】図6aの電線心線の展開図。FIG. 6c is an exploded view of the wire core wire of FIG. 6a.

【符号の説明】[Explanation of symbols]

1……(1a,1b,1c)絶縁体 2……電線心線 3……(3a,3b)空洞 1 ... (1a, 1b, 1c) insulator 2 ... Electric wire core wire 3 ... (3a, 3b) cavity

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 電線心線(2)を被覆する絶縁体(1
b)と、その外部に、空洞(3b)を形成するように絶
縁体(1a)を押出成形したケーブルにおいてケーブル
の重量と、外形が等体積の水の重量との比、すなわちケ
ーブルの見掛け上の比重が1よりも小さくなるように構
成して、水に浮くようにしたことを特徴としたケーブ
ル。
1. An insulator (1) covering a core wire (2) of an electric wire.
b) and the outer portion of the cable in which the insulator (1a) is extruded so as to form a cavity (3b), the ratio of the weight of the cable to the weight of water having the same outer volume, that is, the apparent appearance of the cable. A cable characterized by having a specific gravity of less than 1 so as to float on water.
【請求項2】 中心部の電線心線(2)を被覆する絶縁
体(1b)と、その外周に連絡梁部の絶縁体(1c)を
介して、空洞(3b)を形成するように外被として絶縁
体(1a)を押出成形したことを特徴とする「請求項
1」記載のケーブル。
2. An insulator (1b) covering the core wire (2) in the central portion and an outer periphery so as to form a cavity (3b) through the insulator (1c) in the connecting beam portion. The cable according to claim 1, wherein an insulator (1a) is extruded as a cover.
【請求項3】 内部空洞(3a)を構成する方法とし
て、チューブ状の絶縁体(1b)を使用し、電線心線
(2)をその周上に巻きつけ、その上に空洞(3b)を
形成するように、外被として絶縁体(1a)を中空状に
押出成形したことを特徴とする「請求項1」記載のケー
ブル。
3. A tubular insulator (1b) is used as a method for constructing an internal cavity (3a), a wire core (2) is wound around the periphery thereof, and a cavity (3b) is formed thereon. The cable according to claim 1, wherein an insulator (1a) is extruded into a hollow shape as an outer cover so as to be formed.
【請求項4】 内部空洞(3a)を有する絶縁体(1
b)として複数のチューブを使用し、これと電線心線
(2)を組合せた上に、空洞(3b)を形成するように
外被として絶縁体(1a)を中空状に押出成形したこと
を特徴とする「請求項1」記載のケーブル。
4. An insulator (1) having an internal cavity (3a).
A plurality of tubes are used as b), and the insulation core (1a) is extruded into a hollow shape as an outer cover so as to form a cavity (3b) after combining this with the electric wire core wire (2). The cable according to claim 1, which is characterized.
JP20896495A 1995-07-14 1995-07-14 Cable Pending JPH0935543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20896495A JPH0935543A (en) 1995-07-14 1995-07-14 Cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20896495A JPH0935543A (en) 1995-07-14 1995-07-14 Cable

Publications (1)

Publication Number Publication Date
JPH0935543A true JPH0935543A (en) 1997-02-07

Family

ID=16565079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20896495A Pending JPH0935543A (en) 1995-07-14 1995-07-14 Cable

Country Status (1)

Country Link
JP (1) JPH0935543A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100476614B1 (en) * 1996-04-23 2005-07-11 넥쌍 Method and Device for Manufacturing an Insulative Material Cellular Insulator around a Conductor and Coaxial Cable Provided with an Insulator of This kind
JP2016024114A (en) * 2014-07-23 2016-02-08 積水化学工業株式会社 Tool for insertion of diagnostic device into pipe line
CN113096874A (en) * 2021-03-09 2021-07-09 安徽渡江电缆集团有限公司 Watertight buoyancy type silicon rubber power cable with light armor
CN116131197A (en) * 2023-04-18 2023-05-16 山东汇泰信聚海洋科技有限公司 Cable installation device for ocean engineering building and use method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100476614B1 (en) * 1996-04-23 2005-07-11 넥쌍 Method and Device for Manufacturing an Insulative Material Cellular Insulator around a Conductor and Coaxial Cable Provided with an Insulator of This kind
JP2016024114A (en) * 2014-07-23 2016-02-08 積水化学工業株式会社 Tool for insertion of diagnostic device into pipe line
CN113096874A (en) * 2021-03-09 2021-07-09 安徽渡江电缆集团有限公司 Watertight buoyancy type silicon rubber power cable with light armor
CN113096874B (en) * 2021-03-09 2022-12-20 安徽渡江电缆集团有限公司 Watertight buoyancy type silicon rubber power cable with light armor
CN116131197A (en) * 2023-04-18 2023-05-16 山东汇泰信聚海洋科技有限公司 Cable installation device for ocean engineering building and use method
CN116131197B (en) * 2023-04-18 2023-08-18 山东汇泰信聚海洋科技有限公司 Cable installation device for ocean engineering building and use method

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