JPS6235415A

JPS6235415A - Spiral wire support

Info

Publication number: JPS6235415A
Application number: JP60173851A
Authority: JP
Inventors: 小西　基康
Original assignee: Toshin Electric Co Ltd
Current assignee: Toshin Electric Co Ltd
Priority date: 1985-08-07
Filing date: 1985-08-07
Publication date: 1987-02-16

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】（産業上の利用分野）本発明は複数本の金属線心を含む螺旋状電線支持具に関
し、さらに詳しくは複数本の螺旋状金属線を高分子材料
によって一体的に被覆集束してなる電線支持具であって
、絶縁被覆電線の端末部または中間部を碍子等の支承装
置に支持する為の螺旋状電線支持具の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a spiral electric wire support device including a plurality of metal wire cores, and more specifically relates to a spiral electric wire support device that includes a plurality of metal wire cores, and more specifically, a spiral electric wire support device that includes a plurality of spiral metal wires integrally made of a polymeric material. The present invention relates to an improvement in a spiral wire support which is a wire support formed by bundled insulated wires and is used to support the end portion or intermediate portion of an insulated wire on a support device such as an insulator.

（従来の技術）複数本の金属線心を螺旋状に曲成し、高分子材料によっ
て一体的に被覆集束して成る螺旋状電線支持具は公知で
あり、例えば本件発明者が先に提供した特許第７９０，
６０２号（特公昭４９−４９４７３号）及び特許第１，
１８０，６０６号（特公昭５８−１２６９０号）その他
に開示されている。(Prior Art) A spiral electric wire support device made by bending a plurality of metal wire cores into a spiral shape and integrally covering and converging them with a polymeric material is well known. Patent No. 790,
No. 602 (Special Publication No. 49-49473) and Patent No. 1,
No. 180,606 (Japanese Patent Publication No. 58-12690) and others.

上記特公昭５ｇ−１２６９０号は、等速度で給送された
複数の金属線を螺旋状孔を設けたダイに導入して螺旋形
に成形し、更に之を被覆押出成形機のクロスヘッドに導
入して螺旋状金属線群を高分子材料にて囲繞被覆して一
体的に集束せんとするものであり、斯かる方法により得
られた電線支持具は、被覆電線の端末部又は中間部に巻
装され該電線を支持するべく用いられる。In the above-mentioned Japanese Patent Publication No. 5g-12690, a plurality of metal wires fed at a constant speed are introduced into a die with a spiral hole, formed into a spiral shape, and then introduced into the crosshead of a coating extrusion molding machine. In this method, a group of spiral metal wires is surrounded and covered with a polymeric material in order to focus them integrally. and used to support the wire.

（発明が解決しようとする問題点）ところで、上記の如く高分子材料にて被覆する目的及び
その被覆体の期待される機能は、次の２つに大別される
。即ち、第１は電線に対する絶縁性または機械的保護で
ある。この種の支持具は電圧の加わった電線を支持する
ものであるから、回路の電圧に耐えることは勿論、夏期
通電時の温度上昇時においても被覆体が可及的硬質であ
ること、機械的強度が低下しないこと、外力外傷に対し
強固であること等が要求される。また第２は、可撓性で
ある。この種の支持具は手作業によって電線に巻き付け
るものであるから、その構造は柔軟であることが望まれ
る。(Problems to be Solved by the Invention) As described above, the purpose of coating with a polymeric material and the expected functions of the coating can be broadly classified into the following two. That is, the first is insulation or mechanical protection for the electric wire. This type of support supports electrical wires to which voltage is applied, so it must not only withstand the voltage of the circuit, but also ensure that the covering is as hard as possible, even when the temperature rises during summer energization, and that it is mechanically stable. It is required that the strength does not decrease and that it is strong against external force and trauma. The second is flexibility. Since this type of support is manually wound around the electric wire, it is desirable that its structure be flexible.

然し乍ら、前述の公知の支持具はいずれも単一の高分子
材料にて被覆されたものであるから、上記第１の要件を
充足させる為に、被覆体として硬く強靭な高分子材料を
用いんどすると第２の要件が充足されず、一方第２の要
件を満足させる為に可及的柔軟な高分子材料を用いよう
とすると第１の要件が保証されないと云った矛盾を内包
しており、従って電線支持具とし要求される充分な特性
を完備しているとは言えず、その抜本的な改良が望まれ
るところであった。However, since the above-mentioned known supports are all coated with a single polymer material, in order to satisfy the first requirement above, it is necessary to use a hard and strong polymer material as the coating. If we do this, the second requirement will not be satisfied, and on the other hand, if we try to use a polymeric material that is as flexible as possible in order to satisfy the second requirement, the first requirement will not be guaranteed. Therefore, it cannot be said that it has sufficient characteristics required for a wire support, and drastic improvements have been desired.

本発明は叙上に鑑みなされたもので、上記２つの要件を
兼備した新規な螺旋状電線支持具を提供せんとするもの
である。The present invention has been made in view of the above, and it is an object of the present invention to provide a novel spiral wire support that meets the above two requirements.

（問題点を解決する為の手段）上記目的を達成する為の本発明の構成を添付の実施例図
に基づき説明する。第１図は本発明電線支持具の一例を
示す正面図、第２図は第１図の■−■線拡大縦断面図、
第３図は他の実施例の第２図同様図、第４図は本発明電
線支持具の有効な製造方法を示す原理図、第５図は第４
図のｖ−Ｖ線縦断面図、第６図は他の実施例の第５図同
様図である。即ち、本発明の螺旋状電線支持具は、複数
本の螺旋状金属線体（１・・・）を、高分子材料にて互
いに並行状態で一体的に被覆集束して成る螺旋状電線支
持具（Ａ）に於いて、上記金属線体（１・・・）の夫々
の全周が比較的硬質の高分子材料の被覆体（２・・・）
により夫々被覆されると共に、隣接する線体（ｌ・・・
）の被覆体（２・・・）が比較的軟質の高分子材料の連
結体（３・・・）にて相互に結合されて成ることを要旨
とするものである。本発明の特徴とするところは。(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained based on the attached embodiment diagrams. FIG. 1 is a front view showing an example of the electric wire support of the present invention, FIG. 2 is an enlarged vertical sectional view taken along the line ■-■ in FIG.
FIG. 3 is a diagram similar to FIG. 2 of another embodiment, FIG. 4 is a principle diagram showing an effective manufacturing method of the wire support of the present invention, and FIG.
FIG. 6, which is a vertical sectional view taken along the line v--V in the figure, is similar to FIG. 5 of another embodiment. That is, the spiral electric wire support of the present invention is a spiral electric wire support formed by integrally covering and converging a plurality of spiral metal wire bodies (1...) in parallel with each other with a polymer material. In (A), the entire periphery of each of the metal wires (1...) is a coating (2...) made of a relatively hard polymeric material.
The adjacent wire bodies (l...
The gist of the present invention is that the covering bodies (2 . . . ) are mutually bonded by connecting bodies ( 3 . . . ) made of a relatively soft polymeric material. The features of the present invention are as follows.

金属線体（１・・・）の全周を被覆する被覆体（２・・
・）とこれらを互いに結合する連結体（３・・・）とを
夫々別個の高分子材料にて構成したことにある。前者と
後者とは相溶性を有し、境界面では半ば溶は合って一体
的に融合していることが望ましいが、本質的には前者は
比較的硬質で耐熱性に優れ、高温でもかなりの強さを保
持する材料より成り、一方後者は比較的軟質で低温でも
可撓性を保持する材料より得られる。その為の望ましい
材料選択の一例は、前者は低密度ポリエチレン、例えば
日本ユニカー（株）製；ＮＵＣ９１０５、後者は前記低
密度ポリエチレンとエチレン酢酸ビニル、例えば三菱油
化（株）製；ユカロン（商品名）ＥＶＡ２５Ｋを等量に
配合したものである。またＤＯＰ等の可塑剤を少量含む
塩化ビニルと多量に含む塩化ビニルも望ましい組合せの
一つである。　本発明の電線支持具の有効な製造方法に
ついて概説する。第４図において１本発明支持具（Ａ）
の製造は螺旋状金属線体（１・・・）の製造から始まる
。螺旋状金属線体（１・・・）は任意の公知技術によっ
て製造出来る。例えば本件発明者が先に提供した特許第
１，２１６，９７６号（特公昭５８−５２４１１）発明
方法によって、高分子材料により被覆された螺旋状金属
線が製作できる。これら公知の方法により比較的硬質の
高分子材料から成る被覆体（２・・・）が被覆された金
属線体（１・・・）は、要すれば所望の長さに切断され
て螺旋状金属線単位体（１０・・・）として準備される
。この単位体（１０・・・）は撚合わせ状に束合排列さ
れて螺旋群（１００）となり、送給装置（４）上に供給
される。送給装置（４）は適数個の送給ローラ（４１）
、（４１）又はクローラ（無限軌道）（４２）若しくは
それらの組合せ（図の場合）よりなり、螺旋群（１００
）を螺旋に沿って螺旋回転させながら図中右方へ押送す
る（並行移動ではない）、高分子材料押出機（５）の一
端に設けられたクロスヘッド（６）には螺旋群（１００
）を通過させる為のダイ孔（６１）が透設され、螺旋群
（１００）は該ダイ孔（６１）を通過しつつ押出機（５
）から供給された比較的軟質の高分子材料によって融着
され一体的に集束される。A covering body (2...) that covers the entire circumference of a metal wire body (1...)
) and the connectors (3...) that connect them to each other are made of separate polymeric materials. The former and the latter are compatible, and it is desirable that they partially melt and fuse together at the interface, but essentially the former is relatively hard and has excellent heat resistance, and even at high temperatures it is quite resistant. It consists of a material that retains its strength, while the latter is obtained from a relatively soft material that retains its flexibility even at low temperatures. An example of a desirable material selection for this purpose is that the former is low-density polyethylene, such as Nippon Unicar Co., Ltd.'s NUC9105, and the latter is the low-density polyethylene and ethylene vinyl acetate, such as Mitsubishi Yuka Co., Ltd.; Yucalon (trade name). ) EVA25K is blended in equal amounts. Another desirable combination is vinyl chloride containing a small amount of plasticizer such as DOP and vinyl chloride containing a large amount. An effective method for manufacturing the wire support of the present invention will be outlined. In Fig. 4, 1 the support device of the present invention (A)
The production of starts with the production of a spiral metal wire (1...). The spiral metal wire (1...) can be manufactured by any known technique. For example, a spiral metal wire coated with a polymeric material can be manufactured by the method disclosed in Japanese Patent No. 1,216,976 (Japanese Patent Publication No. 58-52411) previously provided by the present inventor. The metal wire (1...) coated with the coating (2...) made of a relatively hard polymeric material by these known methods is cut into a desired length if necessary to form a spiral shape. It is prepared as a metal wire unit (10...). The unit bodies (10...) are bundled and arranged in a twisted manner to form a spiral group (100), and are supplied onto the feeding device (4). The feeding device (4) includes an appropriate number of feeding rollers (41).
, (41) or a crawler (infinite track) (42), or a combination thereof (in the case of the figure), and consists of a spiral group (100
) is pushed to the right in the figure while spirally rotating along a spiral (not parallel movement).A spiral group (100
) is provided with a die hole (61), and the spiral group (100) is passed through the extruder (5
) are fused and focused together by a relatively soft polymeric material supplied from

第５図及び第６図はクロスヘッド（６）通過前の螺旋群
（１００）の配列を示す断面図であり、図には示さない
が、送給装置（４）の前段には、螺旋群（１００）の貯
蔵装置を備え、適当数の螺旋群（１００）例えば１００
組の螺旋群（１００）が貯蔵される。送給装置（４）か
ら−組の螺旋群（１００）がクロスヘッド（６）に送給
され終わると、直ちに前記貯蔵装置から次の一組の螺旋
群（１００）が送給装置（４）へ補給され、引き続いて
クロスヘッド（６）に送給される。以降連続して螺旋群
（１００）が補給され連続してクロスヘッド（６）を通
過し軟質の高分子材料によって相互に結合される。その
後要すれば冷却水槽（図示せず）中で冷却した後所望の
長さに切断して完成品とされる。5 and 6 are cross-sectional views showing the arrangement of the spiral group (100) before passing through the crosshead (6). (100) storage devices, an appropriate number of helical groups (100), e.g. 100
A set of helices (100) is stored. Immediately after a set of helical groups (100) from the feeding device (4) has been fed to the crosshead (6), the next set of helical groups (100) from the storage device is transferred to the feeding device (4). and subsequently fed to the crosshead (6). Thereafter, the spiral groups (100) are continuously supplied, successively pass through the crosshead (6), and are bonded to each other by a soft polymeric material. Thereafter, if necessary, it is cooled in a cooling water tank (not shown) and then cut into a desired length to produce a finished product.

（作用）斯くして得られた電線支持具（Ａ）は、絶縁被覆電線の
端末部または中間部に巻装され、碍子等の支承装置に係
止されて該電線を支持すべく用いられる。そしてこの電
線支持具（Ａ）は、複数本の螺旋状金属線体（１・・・
）が比較的硬質の高分子材料から成る被覆体（２・・・
）により個々に被覆され、且つ該被覆体（２・・・）同
志が比較的軟質の高分子材料から成る連結体（３・・・
）により結合されて構成されているから、夏期高温時で
も被覆体（２・・・）が硬く、所望の電線把持力が維持
され、また冬季低温時でも適度の柔軟性が損われること
がなく、取付作業の容易さが維持される。(Function) The wire support (A) thus obtained is wrapped around the end or intermediate portion of an insulated wire, and is used to support the wire by being locked to a support device such as an insulator. This electric wire support (A) consists of a plurality of spiral metal wire bodies (1...
) is made of a relatively hard polymeric material (2...
), and the covering bodies (2...) are each made of a relatively soft polymeric material (3...
), the sheathing (2...) is hard even at high temperatures in the summer and maintains the desired wire gripping force, and maintains its appropriate flexibility even at low temperatures in the winter. , the ease of installation work is maintained.

（実施例）以下に実施例について説明する。(Example) Examples will be described below.

第２図の支持具（Ａ）においては、３本の金属線体（１
・・・）の周体に断面円環状の被覆体（２・・・）が同
心円状に被覆され、これらが第５図の如く束合排列され
連結体（３）、　（３）により相互に結合されて図例の
如く断面が数珠状に連なった形状とされている。In the support device (A) in Fig. 2, three metal wire bodies (1
...) are covered concentrically with covering bodies (2...) having an annular cross section, and these are bundled and arranged as shown in Fig. 5, and connected to each other by connecting bodies (3), (3). As shown in the figure, the cross sections are connected in a bead-like shape.

また第３図の支持具（Ａ）は、第６図の如く被覆体（２
・・・）の断面形状が、被覆の下面、即ち電線把持面が
支持具の螺旋形把持面の部分円弧をなすよう大曲率の円
弧状偏平面（２１・・・）とされ、これらが更に連結体
（３）、（３）により結合されて、該偏平面（３１・・
・）と共に平滑な円弧状電線把持面とされている。この
ように電線把持面が平滑であると、支持すべき電線に密
着的となり、支持強度がアップする。In addition, the support (A) in Figure 3 has a cover (2) as shown in Figure 6.
...) is an arcuate flat surface (21...) with a large curvature so that the lower surface of the covering, that is, the wire gripping surface, forms a partial arc of the helical gripping surface of the support, and these are further Connected by connecting bodies (3), (3), the oblique planes (31...
・) and a smooth arc-shaped wire gripping surface. When the wire gripping surface is smooth in this way, it comes into close contact with the wire to be supported, and the support strength is increased.

尚、上記説明において被覆体（２・・・）及び連結体（
３・・・）に使用する高分子材料の色については記述し
なかった。被覆体（２・・・）に関しては、長年月の間
太陽光線に暴露されても材料が劣化せず、充分な絶縁耐
力を保持する必要上、適当なカーボンブラックを含む高
分子材料であることが望ましく、そのため被覆体（２・
・・）の色は黒であることが望ましく、一方連結体（３
・・・）の色は必ずしも黒でなく適宜の色が選択出来る
。特に電線のサイズに品種が多い時は、連結体（３・・
・）の色を黄・赤・緑・青の如く選ぶことにより、更に
上記押出機（５）を２軸押出機とし２種類の高分子材料
を同時に押出すことにより、一層適用電線サイズの標示
が容易となる。In addition, in the above description, the covering body (2...) and the connecting body (
The color of the polymer material used in 3...) was not described. Regarding the covering (2...), it must be made of a polymeric material containing an appropriate amount of carbon black, in order to ensure that the material does not deteriorate even when exposed to sunlight for many years and maintains sufficient dielectric strength. is desirable, and therefore the covering (2.
) is desirably black, while the connector (3
...) is not necessarily black, but any appropriate color can be selected. Especially when there are many types of electric wire sizes, the connecting body (3...
・) By selecting the color of yellow, red, green, or blue, and by using the extruder (5) as a twin-screw extruder to simultaneously extrude two types of polymer materials, it is possible to further indicate the applicable wire size. becomes easier.

また、実施例では金属線体（１）の本数を３本としたが
、これに限られるものではなく通常２〜６本の範囲で用
いられる。更に被覆体（２）及び連結体（３）を構成す
る高分子材料も前記に限定されるものではなく１本発明
を逸脱しない限り他の材料の使用が可能であることは云
うまでもない。Further, in the embodiment, the number of metal wires (1) is three, but the number is not limited to this and is usually used in a range of two to six. Further, the polymer materials constituting the covering body (2) and the connecting body (3) are not limited to those mentioned above, and it goes without saying that other materials can be used without departing from the scope of the present invention.

（発明の効果）本発明は、先行技術例えば特許第１，１８０，６０６号
の欠点に鑑み、複数本の螺旋状金属線を高分子材料によ
って一体的に被覆集束するに当り、各螺旋状金属線を直
接被覆する比較的硬質の高分子材料と、これらを結合す
る比較的軟質の高分子材料とにより被覆一体とされて構
成されてものであるから、夏期高温時にも被覆が充分に
硬く、所望の電線把持力を失わず、しかも冬季低温時に
おいても適度の柔軟性を失わず、取付作業の容易さが維
持出来ると云う特筆されるべき効果を奏する。(Effects of the Invention) In view of the drawbacks of the prior art, for example, Patent No. 1,180,606, the present invention provides a method for covering and converging a plurality of spiral metal wires integrally with a polymer material. Since the coating is made up of a relatively hard polymeric material that directly covers the wires and a relatively soft polymeric material that connects them, the coating is sufficiently hard even during high temperatures in summer. It has the remarkable effect that it does not lose the desired wire gripping force, does not lose its appropriate flexibility even at low temperatures in winter, and maintains the ease of installation work.

[Brief explanation of drawings]

第１図は本発明電線支持具の一例を示す正面図、第２図
は第１図の■−■線拡大縦断面図、第３図は他の実施例
の第２図同様図、第４図は本発明電線支持具の有効な製
造方法を示す原理図、第５図は第４図の■−Ｖ線縦線面
断面図６図は他の実施例の第５図同様図である。（符号の説明）１・・・螺旋状金属線体、　２・・・被覆体、　３・・
・連結体、　４・・・送給装置、　４１・・・送給ロー
ラ、　４２−・・クローラ、　５・・・高分子材料押出
機、　６・・・クロスヘッド、　６１・・・ダイ孔、　
Ａ・・・電線支持具。 −以上−Fig. 1 is a front view showing an example of the wire support of the present invention, Fig. 2 is an enlarged vertical sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a view similar to Fig. 2 of another embodiment, and Fig. 4 is a view similar to Fig. 2 of another embodiment. 5 is a sectional view taken along the vertical line 1--V in FIG. 4, and FIG. 6 is a view similar to FIG. 5 of another embodiment. (Explanation of symbols) 1... Spiral metal wire body, 2... Covering body, 3...
- Connecting body, 4... Feeding device, 41... Feeding roller, 42-... Crawler, 5... Polymer material extruder, 6... Cross head, 61... Die hole,
A...Electric wire support. -And more-

Claims

[Claims]

1. In a helical wire support made by integrally covering and converging a plurality of helical metal wires in parallel with each other with a polymer material, the entire circumference of each of the metal wires is relatively small. A helical wire support characterized in that each wire is covered with a covering of a hard polymeric material, and the coverings of adjacent wires are connected to each other by a connecting body of a relatively soft polymeric material. Ingredients.