JPH0132728B2 - - Google Patents
Info
- Publication number
- JPH0132728B2 JPH0132728B2 JP20002782A JP20002782A JPH0132728B2 JP H0132728 B2 JPH0132728 B2 JP H0132728B2 JP 20002782 A JP20002782 A JP 20002782A JP 20002782 A JP20002782 A JP 20002782A JP H0132728 B2 JPH0132728 B2 JP H0132728B2
- Authority
- JP
- Japan
- Prior art keywords
- lead
- metal sheath
- solder
- fitting
- pipe
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- 229910000679 solder Inorganic materials 0.000 claims description 31
- 238000007747 plating Methods 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 9
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Landscapes
- Processing Of Terminals (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
この発明は、OFケーブル接続箱のオイルシー
ル工法に関するものである。[Detailed description of the invention] (a) Industrial application field This invention relates to an oil seal construction method for an OF cable junction box.
(ロ) 従来技術
従来、OFケーブルの金属シースと接続箱とを
液密状態に接続する場合に、接続のための鉛工を
接続箱の内部で施す、いわゆる内部鉛工方式が知
られている。(b) Prior art Conventionally, when connecting the metal sheath of an OF cable and a junction box in a liquid-tight state, a so-called internal lead-work method has been known in which lead work for the connection is performed inside the junction box. .
従来の内部鉛工方式によるシール工法は、第１
図に示すように、金属シース１に座鉛工２を施
し、その上部に鉛工金具４の先端を位置せしめ、
鉛工金具４の他端内周と金属シース１間にクサビ
金具５を嵌め、その金具５と鉛工金具４とをロツ
クナツト６によつて締結している。また、前記の
座鉛工２と鉛工金具４の先端突出部７の間に玉鉛
工８を施し、更に鉛工金具４の外周に接続箱９の
端部の肉厚部１０をシール部材１１を介して嵌
め、その肉厚部１０を当て金１２、係止金具１３
及びロツクナツト１４により鉛工金具４とねじ結
合によつて一体化している。 The conventional internal lead sealing method is the first
As shown in the figure, a lead fitting 2 is applied to the metal sheath 1, and the tip of the lead fitting 4 is positioned on top of the lead fitting 2.
A wedge metal fitting 5 is fitted between the inner periphery of the other end of the lead metal fitting 4 and the metal sheath 1, and the metal fitting 5 and the lead metal fitting 4 are fastened together with a lock nut 6. In addition, a bevel 8 is applied between the lead seat 2 and the tip protrusion 7 of the lead fitting 4, and a thick part 10 at the end of the connection box 9 is attached to the outer periphery of the lead fitting 4 as a sealing member. 11, and the thick part 10 is inserted into the stopper 12 and the locking fitting 13.
It is integrated with the lead metal fittings 4 by a screw connection using a lock nut 14.
(ハ) 発明が解決しようとする問題点
上記の従来方法によると、座鉛工２及び玉鉛工
８が200℃前後の高い融点をもつた半田によつて
行われるため、近年開発されてきている合成紙絶
縁ケーブルの場合は、合成紙の種類によつては鉛
工時にその許容温度（130℃程度）を超えるおそ
れがあつた。(C) Problems to be Solved by the Invention According to the conventional method described above, the soldering process 2 and the soldering process 8 are performed using solder with a high melting point of around 200°C, so it has not been developed in recent years. In the case of synthetic paper insulated cables, depending on the type of synthetic paper, there was a risk that the permissible temperature (approximately 130°C) would be exceeded during lead work.
(ニ) 問題点を解決するための手段
この発明は、内部鉛工方式による場合の上記の
問題を解決するために、金属シースの周りに嵌め
その内端に接続箱を固定する筒形の鉛工金具の内
端内周面を接続箱側へ突出せしめて筒形突出部を
形成し、その筒形突出部の先端に対向する金属シ
ースの部分から接続箱内方へ至る所要範囲の金属
シースの外周面と、筒形突出部外周面にそれぞれ
半田メツキを施し、その後鉛工金具を金属シース
の周りに嵌め、その外端内周と金属シースとの間
にクサビ金具を嵌入して鉛工金具を固定し、上記
鉛工金具の内端外周部と、金属シースの上記半田
メツキを施した範囲をカバーし、かつ内周面に半
田メツキを施していない補助鉛工管を被せること
によりその内側に鉛工空間部を形成し、上記鉛工
管及び補助鉛工管の外周に装着したヒータにより
半田メツキを予熱したのち、上記鉛工空間部に極
低温半田を流し込み、半田の充填終了後鉛工金具
に接続箱の端部を固定するようにしたものであ
る。(d) Means for Solving the Problems In order to solve the above-mentioned problems of internal lead work, the present invention provides a cylindrical lead fitting that fits around a metal sheath and fixes a connection box to the inner end of the metal sheath. The inner circumferential surface of the inner end of the tool is made to protrude toward the junction box to form a cylindrical protrusion, and the metal sheath extends from the part of the metal sheath facing the tip of the cylindrical protrusion to the inside of the junction box. Solder plating the outer circumferential surface of the cylindrical protrusion and the outer circumferential surface of the cylindrical protrusion, then fit a lead metal fitting around the metal sheath, and fit a wedge metal fitting between the inner periphery of the outer end and the metal sheath. By fixing the metal fittings and covering the outer circumference of the inner end of the lead metal fittings and the solder-plated area of the metal sheath, and covering the inner circumferential surface with an auxiliary lead pipe without solder plating, After forming a lead work space inside and preheating the solder plating with a heater attached to the outer periphery of the lead work pipe and the auxiliary lead work pipe, cryogenic solder is poured into the lead work space, and after filling with solder is completed. The end of the junction box is fixed to lead metal fittings.
(ホ) 実施例
第２図はこの発明の実施例にあつて、接続箱を
固定する前の状態、第３図は接続箱を固定し、接
続作業を終了した状態を示している。この発明の
実施例の工程は次のとおりである。(E) Embodiment FIG. 2 shows an embodiment of the present invention, in which the junction box is in a state before being fixed, and FIG. 3 is a state in which the junction box is fixed and the connection work has been completed. The steps of the embodiment of this invention are as follows.
まず、アルミ製金属シース２０の外周面所要
範囲にアルミ半田による半田メツキ２１を施
す。 First, solder plating 21 with aluminum solder is applied to a required range of the outer peripheral surface of the aluminum metal sheath 20.
鉛工金具２２の内端面に設けた筒形突出部２
３の外周面に同じく半田メツキ２４を施し、こ
の鉛工金具２２をクサビ金具２５とロツクナツ
ト２６を用いて金属シース２０の所定位置にセ
ツトする。 Cylindrical protrusion 2 provided on the inner end surface of the lead fitting 22
Solder plating 24 is similarly applied to the outer peripheral surface of 3, and this lead metal fitting 22 is set in a predetermined position of the metal sheath 20 using a wedge metal fitting 25 and a lock nut 26.
上記半田メツキ２１を施した金属シース２０
の外周に、円錐部及び円筒部から成る銅管製補
助鉛工管２７を嵌め、その円錐部端部を金属シ
ース２０に接触し、中筒部端部を鉛工金具２２
の内端外周に嵌める。これにより、金属シース
２０、補助鉛工管２７、鉛工金具２２及びクサ
ビ金具２５によつて囲まれた鉛工空間部２８を
形成する。また、補助鉛工管２７の先端部と金
属シース２０の間にゴムテープ、パテ等による
仮シール２９を施し、また鉛工金具２２の端部
と金属シース２０の間にも同様の仮シール３０
を施す。 Metal sheath 20 subjected to the solder plating 21 described above
An auxiliary lead pipe 27 made of a copper pipe consisting of a conical part and a cylindrical part is fitted onto the outer periphery of the pipe, the end of the conical part is in contact with the metal sheath 20, and the end of the middle cylindrical part is connected to the lead fitting 22.
Fit it around the inner edge of the As a result, a leadwork space 28 surrounded by the metal sheath 20, the auxiliary leadwork pipe 27, the leadwork fittings 22, and the wedge fittings 25 is formed. Additionally, a temporary seal 29 using rubber tape, putty, etc. is applied between the tip of the auxiliary lead pipe 27 and the metal sheath 20, and a similar temporary seal 30 is applied between the end of the lead fitting 22 and the metal sheath 20.
administer.
なお、補助鉛工管２２の円筒部には注入孔３
１が設けられている。 Note that there is an injection hole 3 in the cylindrical part of the auxiliary lead pipe 22.
1 is provided.
上記補助鉛工管２７、鉛工金具２２の外周に
ヒータ３２を装着する。 A heater 32 is attached to the outer periphery of the auxiliary lead pipe 27 and the lead metal fittings 22.
上記ヒータ３２によつて鉛工空間部２８の内
部を予熱し、半田メツキ２１，２４の部分を30
℃程度に加熱する。 The inside of the lead work space 28 is preheated by the heater 32, and the solder plating parts 21 and 24 are heated to 30°C.
Heat to about ℃.
融点が130℃以下の極低温半田３３を、ケー
ブル絶縁体の許容温度以下の温度で溶融し、こ
れを注入孔３１から鉛工空間部２８に流し込
む。 Cryogenic solder 33 having a melting point of 130° C. or lower is melted at a temperature lower than the permissible temperature of the cable insulator, and is poured into the lead space 28 through the injection hole 31.
ヒータ３２の温度を上昇して、半田３３の融
点以上でかつケーブル絶縁体の許容温度以下の
温度に保つて半田３３を加熱し、その溶融充填
を確実にする。 The temperature of the heater 32 is raised to keep the temperature above the melting point of the solder 33 and below the permissible temperature of the cable insulator to heat the solder 33 and ensure its melting and filling.
以上の工程を終了するとヒータ３２を遮断し
て半田３３を固化させ、その後ヒータ３２を取
外し、第３図に示すように、シール部材３４を
介して接続筒３５の肉厚部３６に嵌め、従来の
場合と同様に当て金３７、係止金具３８及びロ
ツクナツト３９により接続筒３５を鉛工金具２
２と一体化する。 When the above steps are completed, the heater 32 is shut off to solidify the solder 33, and then the heater 32 is removed, and as shown in FIG. As in the case of , connect the connecting tube 35 to the lead fitting 2 using the pad 37, the locking fitting 38 and the lock nut 39.
Become one with 2.
(ヘ) 効果
この発明は以上のような工程を順に経るもので
あり、極低温半田によりシールするものであるか
ら、ケーブル絶縁体が合成紙である場合でも、そ
の許容温度以下で鉛工することができる。また半
田メツキ２１，２４は鉛工空間部２８に臨んだ金
属シース２０及び鉛工金具２２の突出部２３の外
表面にのみ施してあり、補助鉛工管２７の内面に
は施していないので、半田３３は補助鉛工管２７
の内面には接着されない。したがつて、半田３３
が冷却した際、半田は補助鉛工管２７側へ引張ら
れることがなく、自由にケーブル中心方向へ収縮
して金属シース２０と、鉛工金具２２の突出部２
３の各外周面に完全接着される。その結果、半田
メツキ２１の部分においては半田３３と金属シー
ス２０間のシールを、また半田メツキ２４の部分
においては半田３３と鉛工金具２２間のシールを
図り、オイル４０の漏出を確実に閉鎖することが
できる。(F) Effect This invention goes through the above-mentioned steps in order and seals with cryogenic solder, so even if the cable insulation is made of synthetic paper, lead work can be carried out at temperatures below its permissible temperature. Can be done. Furthermore, the solder plating 21 and 24 are applied only to the outer surfaces of the metal sheath 20 and the protruding part 23 of the lead fitting 22 facing the lead work space 28, and are not applied to the inner surface of the auxiliary lead work pipe 27. Solder 33 is auxiliary lead pipe 27
It is not glued to the inner surface of the Therefore, Handa 33
When the solder cools down, the solder is not pulled toward the auxiliary lead pipe 27, and freely contracts toward the center of the cable, causing the metal sheath 20 and the protruding portion 2 of the lead fitting 22 to shrink.
It is completely adhered to each outer peripheral surface of No. 3. As a result, a seal is created between the solder 33 and the metal sheath 20 at the solder plating 21, and a seal is created between the solder 33 and the lead metal fitting 22 at the solder plating 24, thereby reliably blocking the leakage of the oil 40. can do.
また、接続箱３５を取付けていない状態でヒー
タ３２により加熱を行うので、加熱効率がよく、
また温度分布が均一であり、したがつて温度管理
が容易である効果がある。 In addition, since the heater 32 performs heating without the connection box 35 installed, the heating efficiency is high.
In addition, the temperature distribution is uniform, so temperature control is easy.
第１図は従来の工法によつて得られた接続部の
断面図、第２図はこの発明の工法の実施途中にお
ける接続部の断面図、第３図はこの発明の工法に
よつて得られた接続部の断面図である。
２０……金属シース、２１……半田メツキ、２
２……鉛工金具、２３……突出部、２４……半田
メツキ、２７……補助鉛工管、２８……鉛工空管
部、３２……ヒータ、３３……半田、３５……接
続箱。
Fig. 1 is a sectional view of a connection obtained by the conventional construction method, Fig. 2 is a sectional view of the connection part in the middle of implementation of the construction method of the present invention, and Fig. 3 is a sectional view of the connection obtained by the construction method of the present invention. FIG. 20...Metal sheath, 21...Solder plating, 2
2...Lead fittings, 23...Protrusion, 24...Solder plating, 27...Auxiliary lead pipe, 28...Plumb work empty pipe section, 32...Heater, 33...Solder, 35...Connection box.
Claims (1)
固定する筒形の鉛工金具の内端内周面を接続箱側
へ突出せしめて筒形突出部を形成し、その筒形突
出部の先端に対向する金属シースの部分から接続
箱内方へ至る所要範囲の金属シースの外周面と、
筒形突出部外周面にそれぞれ半田メツキを施し、
その後鉛工金具を金属シースの周りに嵌め、その
外端内周と金属シースとの間にクサビ金具を嵌入
して鉛工金具を固定し、上記鉛工金具の内端外周
部と、金属シースの上記半田メツキを施した範囲
をカバーし、かつ内周面に半田メツキを施してい
ない補助鉛工管を被せることによりその内側に鉛
工空間部を形成し、上記鉛工管及び補助鉛工管の
外周に装着したヒータにより半田メツキを予熱し
たのち、上記鉛工空間部に極低温半田を流し込
み、半田の充填終了後鉛工金具に接続箱の端部を
固定することを特徴とするケーブル接続箱のオイ
ルシール工法。1. The inner peripheral surface of the inner end of a cylindrical lead fitting that is fitted around the metal sheath and fixes the junction box to the inner end of the metal sheath is made to protrude toward the junction box side to form a cylindrical protrusion, and the cylindrical protrusion The outer peripheral surface of the metal sheath in the required range from the part of the metal sheath facing the tip to the inside of the junction box,
Solder plating is applied to the outer peripheral surface of each cylindrical protrusion,
After that, a lead fitting is fitted around the metal sheath, and a wedge fitting is fitted between the inner periphery of the outer end and the metal sheath to fix the lead fitting, and the outer periphery of the inner end of the lead fitting and the metal sheath are fixed. By covering the above solder-plated area and covering the inner peripheral surface with an auxiliary lead pipe that is not solder-plated, a lead space is formed inside the lead pipe and the auxiliary lead pipe. A cable characterized in that after preheating the solder plating with a heater attached to the outer circumference of the pipe, cryogenic solder is poured into the lead work space, and after filling the solder, the end of the connection box is fixed to the lead work fitting. Oil seal construction method for junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57200027A JPS5989508A (en) | 1982-11-13 | 1982-11-13 | Oil sealing method for cable connection box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57200027A JPS5989508A (en) | 1982-11-13 | 1982-11-13 | Oil sealing method for cable connection box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5989508A JPS5989508A (en) | 1984-05-23 |
| JPH0132728B2 true JPH0132728B2 (en) | 1989-07-10 |
Family
ID=16417592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57200027A Granted JPS5989508A (en) | 1982-11-13 | 1982-11-13 | Oil sealing method for cable connection box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5989508A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6466981B2 (en) * | 2017-03-07 | 2019-02-06 | 株式会社不二工機 | COIL DEVICE, ELECTRIC VALVE AND SOLENOID VALVE USING THE SAME |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57113713A (en) * | 1980-12-30 | 1982-07-15 | Sumitomo Electric Industries | End of aluminum coated power cable |
-
1982
- 1982-11-13 JP JP57200027A patent/JPS5989508A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57113713A (en) * | 1980-12-30 | 1982-07-15 | Sumitomo Electric Industries | End of aluminum coated power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5989508A (en) | 1984-05-23 |
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