JPH04363882A - Watertight processing method for cable connecting part - Google Patents
Watertight processing method for cable connecting partInfo
- Publication number
- JPH04363882A JPH04363882A JP16511591A JP16511591A JPH04363882A JP H04363882 A JPH04363882 A JP H04363882A JP 16511591 A JP16511591 A JP 16511591A JP 16511591 A JP16511591 A JP 16511591A JP H04363882 A JPH04363882 A JP H04363882A
- Authority
- JP
- Japan
- Prior art keywords
- press
- connecting part
- sheet
- section
- pressure
- 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
- 238000003672 processing method Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000565 sealant Substances 0.000 claims description 36
- 238000003825 pressing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 12
- 239000003566 sealing material Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000003190 viscoelastic substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明の電線接続部、特に電線分
岐接続部を粘性シ−ル材を使用して水密処理する方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for water-tightening electric wire connections, particularly electric wire branch connections, using a viscous sealing material.
【0002】0002
【従来の技術】電線接続部の水密処理は、電線接続部の
絶縁上、腐食防止上等からして不可欠である。2. Description of the Related Art Watertight treatment of electric wire connections is essential from the standpoint of insulating the electric wire connections and preventing corrosion.
【0003】旧来、電線接続部の水密処理には、自己融
着性テ−プを巻き付ける方法が伝統的に使用されてきた
が、かなりの手数と時間を必要とし、特に複雑な入隅箇
所が存在する分岐接続部の場合においては、その入隅箇
所の完全な充填が至難であって、水密性にも問題がある
。Traditionally, a method of wrapping self-adhesive tape has been used to make electrical wire connections watertight, but this requires a considerable amount of effort and time, and is especially difficult for complicated corners. In the case of existing branch connections, it is extremely difficult to completely fill the corner locations, and watertightness is also a problem.
【0004】近来、かかる不具合を解消するため、図4
の(イ)に示すような、シ−ト状支持材1’の片面に粘
性シ−ル剤層2’を設けたシ−ト状シ−ル材A’を、図
4の(ロ)に示すように、粘性シ−ル剤層2’を内側に
向けて電線接続部B’上に被覆し、この外面を図4の(
ハ)に示すようにプレス型21’,22’によって加圧
する方法が提案されている。[0004]Recently, in order to eliminate such problems,
A sheet-like sealing material A' having a viscous sealant layer 2' on one side of a sheet-like support material 1' as shown in (a) of FIG. As shown in FIG.
As shown in c), a method of applying pressure using press molds 21' and 22' has been proposed.
【0005】この方法においては、プレス加圧によって
粘性シ−ル剤が電線接続箇所の入隅箇所に圧入され、そ
の入り隅箇所が充填されてシ−ル性が付与される。従っ
て、粘性シ−ル剤に充分な内圧を発生させることが、そ
のシ−ル性付与のための重要な要件となる。In this method, a viscous sealant is press-fitted into the corner of the wire connection location by pressurization, filling the corner and imparting sealing properties. Therefore, generating sufficient internal pressure in the viscous sealant is an important requirement for imparting sealing properties.
【0006】[0006]
【発明が解決しようとする課題】上記粘性シ−ル剤にお
いては、未架橋ゴム例えば未架橋ブチルゴムを主成分と
する粘弾性体が使用され、弾性体と流体との中間的性質
を有するから、上記プレス加圧により粘性シ−ル剤に発
生する内圧としては、流体としての圧力伝達以外に弾性
体としての応力も考慮する必要がある。[Problems to be Solved by the Invention] The above-mentioned viscous sealant uses a viscoelastic material whose main component is uncrosslinked rubber, such as uncrosslinked butyl rubber, and has properties intermediate between an elastic material and a fluid. As for the internal pressure generated in the viscous sealant by the above-mentioned pressurization, it is necessary to take into account the stress caused by the elastic body in addition to the pressure transmission as a fluid.
【0007】而るに、上記において、プレス加圧に対す
る弾性体応力として、粘性シ−ル剤にプレス加圧方向と
直角方向に発生する応力もシ−ルに密接に関与し、この
横方向応力を大とすることもシ−ル性向上に有効である
。[0007] In the above, stress generated in the viscous sealant in a direction perpendicular to the direction of press pressure is also closely related to the seal as elastic body stress due to press pressure, and this lateral stress It is also effective to increase the sealing performance.
【0008】しかしながら、図4の(ハ)において、粘
性シ−ル剤2’の弾性的性質に基づき発生する横方向応
力は、プレス加圧P’の厚み方向圧縮歪に伴い発生する
ポアソン比引張歪に基づく横応力P”のみであり、この
横応力P”を高くするにはプレス圧力を相当に高くする
必要がある。However, in (c) of FIG. 4, the lateral stress generated due to the elastic properties of the viscous sealant 2' is the Poisson's ratio tensile stress generated due to the compressive strain in the thickness direction of the press pressure P'. There is only a lateral stress P'' based on strain, and in order to increase this lateral stress P'', it is necessary to increase the press pressure considerably.
【0009】而るに、プレス加圧力を余り高くすると、
上記電線接続部上に被覆したシ−ト状シ−ル材の長さ方
向両端からのシ−ル剤の食み出し、電線接続金具による
シ−ト状支持材の突き破り等が懸念され、プレス加圧力
の増大には限度がある。However, if the press force is too high,
There are concerns that the sealant may protrude from both lengthwise ends of the sheet-like sealant coated on the wire connection part, and that the sheet-like support material may be pierced by the wire connection fittings. There is a limit to the increase in pressurizing force.
【0010】本発明の目的は、シ−ト状支持体の片面に
粘性シ−ル剤層を設けたシ−ト状シ−ル剤を、粘性シ−
ル剤層を内側にして電線接続部上に被覆し、この被覆体
をプレス型により加圧して電線接続部を水密処理する場
合、比較的低いプレス圧のもとでも粘性シ−ル剤に横方
向応力(圧力)を充分に作用させてそのシ−ル剤と被シ
−ル面(電線側面、電線接続金具側面)との横方向から
の圧接を強化することにある。An object of the present invention is to use a sheet-like sealant having a viscous sealant layer on one side of a sheet-like support as a viscous sealant.
When coating electrical wire connections with the sealing agent layer on the inside and applying pressure to this coating using a press mold to make the electrical wire connections watertight, the viscous sealant can be applied even under relatively low pressing pressure. The purpose is to apply sufficient directional stress (pressure) to strengthen the lateral pressure contact between the sealant and the surface to be sealed (the side surface of the wire, the side surface of the wire connection fitting).
【0011】[0011]
【課題を解決するための手段】本発明の電線接続部の水
密処理方法はシ−ト状支持材の片面に粘性シ−ル剤層を
設けたシ−ト状シ−ル材を電線接続部上に粘性シ−ル剤
層を内側に向けて電線接続部上に被覆し、該被覆シ−ル
材をプレス型により加圧する方法において、前記加圧を
、横断面が凸曲線状の加圧面を有するプレス型により行
うことを特徴とする構成である。[Means for Solving the Problems] The watertight treatment method for electric wire connections of the present invention involves applying a sheet-like sealing material provided with a viscous sealant layer on one side of a sheet-like support material to electric wire connections. In a method in which a viscous sealant layer is applied to the electrical wire connection part facing inward, and the coated sealant is pressed by a press die, the pressure is applied to a pressure surface having a convex curved cross section. This configuration is characterized in that it is carried out using a press mold having.
【0012】0012
【作用】プレス金型の加圧面を横断面が凸曲線状の曲面
にしてあるから、プレス加圧下、粘性シ−ル剤にポアソ
ン比横歪に基づく横応力以外に加圧面が円弧面であるこ
とによって発生する横方向応力の作用があり、プレス加
圧面が平面である場合に比べ、横方向応力(横方向圧力
)を大きくでき、横方向からの被シ−ル面への粘性シ−
ル剤の圧接を強化できる。[Function] Since the pressing surface of the press mold is a curved surface with a convex cross section, the pressing surface is an arcuate surface in addition to the lateral stress caused by Poisson's ratio lateral strain on the viscous sealant under press pressure. As a result, the lateral stress (lateral pressure) generated by the press can be increased compared to when the pressing surface is flat, and the viscous sealing from the lateral direction to the surface to be sealed can be increased.
It can strengthen the pressure welding of the adhesive.
【0013】[0013]
【実施例】以下、本発明の実施例を図面により説明する
。図1の(イ)は本発明において使用するシ−ト状シ−
ル材Aを示しており、シ−ト状支持材1(例えば、塩化
ビニルフィルム等のプラスチックフィルム)の片面に粘
性シ−ル剤2(接着性と高温下でも自己保形性を維持で
きる粘弾性物、例えば、未架橋ブチルゴムを主成分とす
る組成物)を層状に形成し、その粘性シ−ル剤層2の中
央に溝等の位置標識20を付設してあり、粘性シ−ル剤
層の厚みは電線の1/3以上としてある。[Embodiments] Hereinafter, embodiments of the present invention will be explained with reference to the drawings. Figure 1(a) shows the sheet-like sheet used in the present invention.
In this figure, a viscous sealant 2 (a viscous sealant 2 that can maintain adhesiveness and self-shape retention even at high temperatures) is applied to one side of a sheet-like support material 1 (for example, a plastic film such as a vinyl chloride film). An elastic material (for example, a composition containing uncrosslinked butyl rubber as a main component) is formed into a layer, and a position mark 20 such as a groove is attached to the center of the viscous sealant layer 2. The thickness of the layer is set to be 1/3 or more of the electric wire.
【0014】図1の(ロ)は本発明において使用するプ
レス型を示し、横断面が凹曲線状の溝210(例えば、
円弧溝)を有する下型21と横断面が凸曲線状の突部2
20を有する上型22とから成り、溝210の円弧径を
突部220の円弧径よりも大としてある。FIG. 1B shows a press mold used in the present invention, in which a groove 210 having a concave cross section (for example,
A lower mold 21 having a circular arc groove) and a protrusion 2 having a convex curved cross section
20, and the arcuate diameter of the groove 210 is larger than the arcuate diameter of the protrusion 220.
【0015】本発明によって電線接続部を水密処理する
には、図2の(イ)に示すようにシ−ト状シ−ル材Aの
粘性シ−ル剤層2上に電線接続部Bを、電線相互間を広
げ、かつその粘性シ−ル剤層2の中央に電線接続部Bの
接続金具3を位置合わせした状態で配置し、更に、図2
の(ロ)に示すように、シ−ト状シ−ル材Aを折り曲げ
て電線接続部Bをシ−ト状シ−ル材Aで包囲する。次い
で、このシ−ト状シ−ル材Aで包囲した電線接続部Bを
図2の(ハ)に示すように、プレスの上下型21,22
間にセットし、シ−ト状シ−ル材Aのシ−ト状支持材両
端部a,aを上下型21,22の平坦部で挾持し、この
状態のもとで粘性シ−ル剤2を加圧する。この時の加圧
力は概ね10.5kg/cm2以下でよい。尚、図2の
(ハ)においては、上型22の凸部の曲率は下型21の
溝の曲率よりも大とされている。In order to make the electric wire connection part watertight according to the present invention, the electric wire connection part B is placed on the viscous sealant layer 2 of the sheet-like sealant A as shown in FIG. , the wires are spaced apart, and the connecting fitting 3 of the wire connecting portion B is positioned in the center of the viscous sealant layer 2, and further, as shown in FIG.
As shown in (b), the sheet-shaped sealing material A is bent to surround the wire connection portion B with the sheet-shaped sealing material A. Next, as shown in FIG.
The sheet-like sealing material A is placed in between the two ends of the sheet-like supporting material a, a, which are held between the flat parts of the upper and lower molds 21 and 22, and in this state, the viscous sealing material is Pressure 2. The pressing force at this time may be approximately 10.5 kg/cm2 or less. In FIG. 2C, the curvature of the convex portion of the upper mold 22 is larger than the curvature of the groove of the lower mold 21.
【0016】このプレス加圧により、粘性シ−ル剤2に
ポアソン比横方向引張歪に基づく横方向応力が作用する
ほか、加圧面が曲面であるために、図3の(ニ)に示す
ように微小角Δθを隔てた2点間に分力ΔPが作用し、
この分力によっても粘性シ−ル剤2が横方向に加圧され
る。従って、プレス加圧面が平坦面である場合に比べ、
同じプレス圧力の下でも、プレス加圧面を円弧面にした
ことにより粘性シ−ル剤への横方向加圧力を増大でき、
それだけ横方向からの被シ−ル面(電線側面、電線接続
金具側面)と粘性シ−ル剤との圧接を強化できる。Due to this pressing, lateral stress based on Poisson's ratio lateral tensile strain acts on the viscous sealant 2, and since the pressing surface is a curved surface, as shown in FIG. 3(d), A component force ΔP acts between two points separated by a small angle Δθ,
This force also applies pressure to the viscous sealant 2 in the lateral direction. Therefore, compared to when the press pressing surface is a flat surface,
Even under the same press pressure, the lateral press force on the viscous sealant can be increased by making the press press surface an arcuate surface.
Accordingly, the pressure contact between the surface to be sealed (the side surface of the electric wire, the side surface of the electric wire connection fitting) and the viscous sealant from the lateral direction can be strengthened.
【0017】本発明の電線接続部の水密処理方法によれ
ば、プレス加圧によって粘性シ−ル剤が電線接続部の横
方向(幅方向)に向かって流動し、両端部に至るほど粘
性シ−ル剤量が多くなる。従って、図2の(ハ)に示す
ように、電線接続金具3をシ−ト状支持材Aの折り曲げ
箇所C側に位置的に偏らせておけば、電線接続金具3の
回りの粘性シ−ル剤の厚みを厚くでき、絶縁性の強化、
プレス加圧時での電線接続金具によるシ−ト状支持材の
突き破りの確実な排除等に有利である。According to the watertight treatment method for electric wire joints of the present invention, the viscous sealant flows in the lateral direction (width direction) of the electric wire joints due to pressurization, and the viscous sealant increases as it reaches both ends. -The amount of drug used increases. Therefore, as shown in FIG. The thickness of the adhesive can be made thicker, and the insulation properties can be strengthened.
This is advantageous in reliably preventing the sheet-like support material from being penetrated by the electric wire connection fitting during pressurization.
【0018】また、図3に示すように、プレス型に切欠
き部23を設け、プレス加圧時、電線接続金具をこの切
欠き部に逃がして非加圧状態にすれば、電線接続金具周
囲への粘性シ−ル剤の回り込みを促し得、一層に有利で
ある。Furthermore, as shown in FIG. 3, if a notch 23 is provided in the press mold and the wire connection fitting is released into this notch during press pressurization to create a non-pressurized state, the surroundings of the wire connection fitting can be removed. The viscous sealant can be encouraged to spread around the viscous sealant, which is even more advantageous.
【0019】上記において、横断面凸曲線の突部を有す
る上型(下型)を使用し、下方(上方)の型にはゴム等
の柔軟なものを使用すること、或いは、横断面凹曲線の
溝を有する上型(下型)を使用し、下方(上方)の型に
はゴム等の柔軟なものを使用することも可能である。In the above, an upper mold (lower mold) having a protrusion with a convex curve in cross section is used, and a flexible material such as rubber is used for the lower (upper) mold, or a concave curve in cross section. It is also possible to use an upper mold (lower mold) having grooves, and use a flexible material such as rubber for the lower (upper) mold.
【0020】上記において、プレス後は、シ−ト状シ−
ル材の外部に粘着テ−プを巻き付けてもよいし、巻き付
け無しにそのままで使用してもよい。[0020] In the above, after pressing, the sheet
Adhesive tape may be wrapped around the outside of the material, or it may be used as is without wrapping.
【0021】[0021]
【発明の効果】本発明の電線接続部の水密処理方法は上
述した通りの構成であり、プレス型の加圧面を曲面とし
ているから、粘性シ−ル材にポアソン比横歪に基づく横
方向加圧力のみならず、加圧面が曲面であることに基づ
く横方向分力をも作用させ得、プレス型の加圧面が平坦
面である場合に比べて横方向加圧力を大きくできるから
、粘性シ−ル剤と被シ−ル面との横方向からの圧接を強
化でき、シ−ル性の向上に有利である。[Effects of the Invention] The watertight treatment method for electric wire connections according to the present invention has the above-mentioned configuration, and since the pressurizing surface of the press mold is a curved surface, the viscous sealing material can be subjected to lateral strain based on Poisson's ratio lateral strain. Not only pressure, but also lateral force due to the curved pressing surface can be applied, and the lateral pressing force can be larger than when the pressing surface of the press mold is a flat surface. It is possible to strengthen the lateral pressure contact between the sealant and the surface to be sealed, which is advantageous in improving sealing performance.
【0022】又、電線接続部全体を横断面において、二
つに容易に折り曲げて見かけの形状を小さくできるので
、本発明により処理した電線接続部を有する電線の束状
化を容易に行い得、電線接続部上へのテ−プの巻き付け
も容易に行い得る。[0022] Furthermore, since the entire electric wire connection part can be easily bent in two in cross section to reduce its apparent shape, electric wires having the electric wire connection part treated according to the present invention can be easily bundled. The tape can also be easily wrapped around the wire connection portion.
【図1】図1の(イ)は本発明において使用するシ−ト
状シ−ル材を示す説明図、図1の(ロ)は本発明におい
て使用するプレス型を示す説明図である。FIG. 1(A) is an explanatory view showing a sheet-shaped sealing material used in the present invention, and FIG. 1(B) is an explanatory view showing a press mold used in the present invention.
【図2】本発明の実施例の作業手順を示す説明図である
。FIG. 2 is an explanatory diagram showing the working procedure of the embodiment of the present invention.
【図3】本発明において使用するプレス型の別例を示す
説明図である。FIG. 3 is an explanatory diagram showing another example of the press mold used in the present invention.
【図4】従来例を示す説明図である。FIG. 4 is an explanatory diagram showing a conventional example.
1 シ−ト状支持材 2 粘性シ−ル剤 A シ−ト状シ−ル材 21 下型 22 上型 1 Sheet-shaped support material 2 Viscous sealant A Sheet-shaped sealing material 21 Lower mold 22 Upper mold
Claims (2)
設けたシ−ト状シ−ル材を電線接続部上に粘性シ−ル剤
層を内側に向けて電線接続部上に被覆し、該被覆シ−ル
材をプレス型により加圧する方法において、上記の加圧
を横断面が凸曲線状の加圧面を有するプレス型により行
うことを特徴とする電線接続部の水密処理方法。Claim 1: Wire connection using a sheet-shaped sealing material provided with a viscous sealant layer on one side of a sheet-shaped support material on the wire connection portion with the viscous sealant layer facing inside. A method of applying pressure to a wire connection part using a press die and applying pressure to the coated sealing material using a press die, the above-mentioned pressurizing being carried out using a press die having a pressure surface having a convex curved cross section. Watertight treatment method.
の何れか一方に設け、他方のプレス型に横断面が凹曲線
状の加圧面を設けたプレス型を使用する請求項1記載の
電線接続部の水密処理方法。[Claim 2] A press mold is used in which one of the upper and lower press molds is provided with a pressure surface having a convex curved cross section, and the other press mold is provided with a pressure surface having a concave curved cross section. Watertight treatment method for electrical wire connections as described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16511591A JPH04363882A (en) | 1991-06-10 | 1991-06-10 | Watertight processing method for cable connecting part |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16511591A JPH04363882A (en) | 1991-06-10 | 1991-06-10 | Watertight processing method for cable connecting part |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04363882A true JPH04363882A (en) | 1992-12-16 |
Family
ID=15806199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16511591A Pending JPH04363882A (en) | 1991-06-10 | 1991-06-10 | Watertight processing method for cable connecting part |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04363882A (en) |
-
1991
- 1991-06-10 JP JP16511591A patent/JPH04363882A/en active Pending
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