JPS6318132Y2 - - Google Patents
Info
- Publication number
- JPS6318132Y2 JPS6318132Y2 JP1677482U JP1677482U JPS6318132Y2 JP S6318132 Y2 JPS6318132 Y2 JP S6318132Y2 JP 1677482 U JP1677482 U JP 1677482U JP 1677482 U JP1677482 U JP 1677482U JP S6318132 Y2 JPS6318132 Y2 JP S6318132Y2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- cable
- insulation
- polyethylene
- conductor
- 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.)
- Expired
Links
- 238000009413 insulation Methods 0.000 claims description 31
- 239000004698 Polyethylene Substances 0.000 claims description 16
- -1 polyethylene Polymers 0.000 claims description 16
- 229920000573 polyethylene Polymers 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 10
- 230000004927 fusion Effects 0.000 claims description 9
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 7
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 5
- 239000004718 silane crosslinked polyethylene Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 41
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 4
- 229910000077 silane Inorganic materials 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Processing Of Terminals (AREA)
- Cable Accessories (AREA)
Description
【考案の詳細な説明】
本考案は架橋ポリエチレン絶縁ケーブル(以下
CVケーブルという)の接続部の改良に関するも
のである。[Detailed explanation of the invention] This invention is a cross-linked polyethylene insulated cable (hereinafter referred to as
This relates to improvements to the connection part of CV cables.
従来、CVケーブルの接続部の一つとしてケー
ブル絶縁層の端部を鉛筆削りして導体を露出さ
せ、該導体に接続金具を取付け、該接続金具およ
びケーブル絶縁層に跨つて射出成型によりシラン
架橋ポリエチレン絶縁補強層を形成したものがあ
る。 Conventionally, as one of the connections of CV cables, the end of the cable insulation layer was sharpened with a pencil to expose the conductor, a connection fitting was attached to the conductor, and silane cross-linking was performed by injection molding across the connection fitting and the cable insulation layer. Some have a polyethylene insulation reinforcing layer formed thereon.
しかし上記構造の接続部は、シラングラフトポ
リエチレンを射出成型して絶縁補強層を形成する
際、絶縁補強層とケーブル絶縁層との接触界面に
おけるケーブル絶縁層表面に0.1〜0.5mm程度の径
方向の亀裂が生じるという問題があつた。この原
因は射出成型されたシラングラフトポリエチレン
が架橋する際の収縮力がケーブル絶縁層表面にも
作用するためと考えられる。 However, when forming the insulation reinforcing layer by injection molding silane-grafted polyethylene, the connection part of the above structure has a diameter of about 0.1 to 0.5 mm on the surface of the cable insulation layer at the contact interface between the insulation reinforcement layer and the cable insulation layer. There was a problem with cracks forming. The reason for this is thought to be that the contraction force when the injection-molded silane-grafted polyethylene crosslinks also acts on the surface of the cable insulation layer.
そこで、ケーブル絶縁層の表面温度を高くして
シラングラフトポリエチレンを射出成型し、シラ
ン架橋ポリエチレンをケーブル絶縁層表面に良好
に融着するようにすれば、ある程度ケーブル表面
の亀裂を防止できるのではないかと考え、シラン
グラフトポリエチレンを高温度にして射出成型し
たが、このようにシラングラフトポリエチレンを
高温にして射出成型すると、ケーブル絶縁層が熱
のために軟化し、かつ成型時の圧力により細くな
り、このため金型の端部からシラングラフトポリ
エチレンが流出してしまうという問題が生じる。 Therefore, it may be possible to prevent cracks on the cable surface to some extent by increasing the surface temperature of the cable insulation layer and injection molding silane-grafted polyethylene to better fuse the silane-crosslinked polyethylene to the surface of the cable insulation layer. Thinking that this might be the case, I injection-molded the silane-grafted polyethylene at high temperatures, but when I injection-molded the silane-grafted polyethylene at high temperatures, the cable insulation layer softened due to the heat and became thinner due to the pressure during molding. This causes a problem in that the silane grafted polyethylene flows out from the end of the mold.
本考案は上記問題点に鑑みてなされたもので、
絶縁補強層とケーブル絶縁層との接触界面におけ
るケーブル絶縁層表面に亀裂を生じさせない架橋
ポリエチレン絶縁ケーブルの接続部を提供するも
のである。 This idea was created in view of the above problems.
The present invention provides a connecting portion of a crosslinked polyethylene insulated cable that does not cause cracks on the surface of the cable insulating layer at the contact interface between the insulating reinforcing layer and the cable insulating layer.
以下、本考案の一実施例を図面を参照して詳細
に説明する。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
1はCVケーブルで、ケーブル絶縁層2の先端
が鉛筆削りされて導体3が露出されている。導体
3には、接続金具4が取付けられている。この接
続金具4およびケーブル絶縁層2上には両者に跨
つてシラングラフトポリエチレンを射出成型して
シラン架橋した架橋ポリエチレン絶縁補強層5が
設けてある。この構造は従来のものと同じである
が、本考案では絶縁補強層5とケーブル絶縁層2
との接触界面にポリエチレンフイルムの融着層6
が介在させてある。この融着層はケーブル絶縁層
外周にポリエチレンフイルムを1〜2層巻付け、
これを融着して形成したものである。なお、融着
層は絶縁補強層の端部から若干突出する程度の長
さまで設けておくものである。 Reference numeral 1 is a CV cable, in which the tip of the cable insulation layer 2 is pencil-sharpened to expose the conductor 3. A connecting fitting 4 is attached to the conductor 3. A crosslinked polyethylene insulation reinforcing layer 5 is provided on the connection fitting 4 and the cable insulating layer 2 by injection molding silane grafted polyethylene and crosslinking with silane. This structure is the same as the conventional one, but in the present invention, the insulation reinforcing layer 5 and the cable insulation layer 2
A polyethylene film adhesive layer 6 is placed on the contact interface with the
is interposed. This fusion layer is made by wrapping one or two layers of polyethylene film around the outer circumference of the cable insulation layer.
It is formed by fusing these together. Note that the fusion layer is provided to a length that slightly protrudes from the end of the insulation reinforcing layer.
上記構造の接続部を形成するには、ケーブル絶
縁層2を鉛筆削りして導体3を露出させ、該導体
3に接続金具4を取付ける前又は取付けた後に、
ケーブル絶縁層の端部外周面にポリエチレンフイ
ルムの融着層6を形成し、しかる後、絶縁補強層
5を成型する。 To form the connection part of the above structure, the cable insulating layer 2 is sharpened to expose the conductor 3, and before or after attaching the connecting fitting 4 to the conductor 3,
A fusion layer 6 of polyethylene film is formed on the outer peripheral surface of the end portion of the cable insulation layer, and then an insulation reinforcing layer 5 is molded.
なお、上記実施例においては接続金具として端
末金具を使用したが、これに換えて両端に導体挿
入孔をもつた周知の中間接続金具を使用してもよ
い。この場合中間接続金具の両側のCVケーブル
絶縁層上にポリエチレンフイルムの融着層を設け
るものである。 In the above embodiment, a terminal fitting is used as the connecting fitting, but instead of this, a well-known intermediate connecting fitting having conductor insertion holes at both ends may be used. In this case, a fusion layer of polyethylene film is provided on the CV cable insulation layer on both sides of the intermediate connection fitting.
以上のように本考案に係るCVケーブルの接続
部は、シラングラフトポリエチレンを射出成型し
た絶縁補強層とケーブル絶縁層との接触界面にポ
リエチレンフイルムの融着層を介在させたため、
絶縁補強層がポリエチレンフイルムの融着層に良
好に融着して融着状態がよくなり、また絶縁補強
層の収縮力がケーブル絶縁層におよばなくなるた
めケーブル絶縁層の外表面に亀裂が入ることも確
実に防止できる。 As described above, the CV cable connection part according to the present invention has a fusion layer of polyethylene film interposed at the contact interface between the insulation reinforcing layer made of injection molded silane-grafted polyethylene and the cable insulation layer.
The insulation reinforcing layer is well fused to the polyethylene film fusion layer, resulting in a good fusion bond, and the shrinkage force of the insulation reinforcement layer is no longer applied to the cable insulation layer, which prevents cracks from forming on the outer surface of the cable insulation layer. can also be definitely prevented.
図面は本考案に係る架橋ポリエチレン絶縁ケー
ブルの接続部の一実施例を示す半分断面図であ
る。
1は架橋ポリエチレン絶縁ケーブル、2は絶縁
層、3は導体、4は接続金具、5は絶縁補強層、
6は融着層。
The drawing is a half sectional view showing an embodiment of a connecting portion of a cross-linked polyethylene insulated cable according to the present invention. 1 is a cross-linked polyethylene insulated cable, 2 is an insulating layer, 3 is a conductor, 4 is a connecting fitting, 5 is an insulation reinforcing layer,
6 is a fusion layer.
Claims (1)
出させ、該導体に接続金具を取付け、該接続金具
およびケーブル絶縁層上に跨つて射出成型により
シラン架橋ポリエチレン絶縁補強層を設けてなる
架橋ポリエチレン絶縁ケーブルの接続部におい
て、前記絶縁補強層とケーブル絶縁層との接触界
面にポリエチレンフイルムの融着層を介在させた
ことを特徴とする架橋ポリエチレン絶縁ケーブル
の接続部。 Cross-linked polyethylene made by sharpening the end of the cable insulation layer to expose the conductor, attaching a connecting fitting to the conductor, and providing a silane cross-linked polyethylene insulation reinforcing layer by injection molding over the connecting fitting and the cable insulation layer. A connecting portion of a cross-linked polyethylene insulated cable, characterized in that a fusion layer of polyethylene film is interposed at the contact interface between the insulation reinforcing layer and the cable insulating layer in the connecting portion of the insulated cable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1677482U JPS58120570U (en) | 1982-02-09 | 1982-02-09 | Connection part of cross-linked polyethylene insulated cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1677482U JPS58120570U (en) | 1982-02-09 | 1982-02-09 | Connection part of cross-linked polyethylene insulated cable |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58120570U JPS58120570U (en) | 1983-08-17 |
JPS6318132Y2 true JPS6318132Y2 (en) | 1988-05-23 |
Family
ID=30029128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1677482U Granted JPS58120570U (en) | 1982-02-09 | 1982-02-09 | Connection part of cross-linked polyethylene insulated cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58120570U (en) |
-
1982
- 1982-02-09 JP JP1677482U patent/JPS58120570U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58120570U (en) | 1983-08-17 |
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