JPH11307313A - Lighting protector and method of producing the same - Google Patents
Lighting protector and method of producing the sameInfo
- Publication number
- JPH11307313A JPH11307313A JP11530198A JP11530198A JPH11307313A JP H11307313 A JPH11307313 A JP H11307313A JP 11530198 A JP11530198 A JP 11530198A JP 11530198 A JP11530198 A JP 11530198A JP H11307313 A JPH11307313 A JP H11307313A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- lightning arrester
- elements
- adhesive layer
- insulator
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 11
- 230000001012 protector Effects 0.000 title abstract 2
- 239000000853 adhesive Substances 0.000 claims abstract description 70
- 230000001070 adhesive effect Effects 0.000 claims abstract description 70
- 239000012790 adhesive layer Substances 0.000 claims abstract description 30
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004814 polyurethane Substances 0.000 claims abstract description 6
- 229920002635 polyurethane Polymers 0.000 claims abstract description 6
- 239000012212 insulator Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 abstract description 27
- 239000002184 metal Substances 0.000 abstract description 27
- 238000002955 isolation Methods 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 5
- 230000008646 thermal stress Effects 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229920006332 epoxy adhesive Polymers 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Landscapes
- Thermistors And Varistors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、両面に電極を有
する電圧非直線型の素子を備え、電力の送変電分野にお
いて送電線路および送変電機器を保護する避雷器、およ
びその製造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 lightning arrester having a voltage non-linear element having electrodes on both sides and protecting a transmission line and transmission equipment in the field of power transmission and transformation, and a method of manufacturing the same. .
【０００２】[0002]
【従来の技術】図４は従来の避雷器の断面図、図５は図
４の電圧非直線型の素子の斜視図である。避雷器１は、
中心部が突出した台座２と、この台座２に載置された円
筒状の碍子３と、この碍子３内に配置された避雷器本体
４と、避雷器本体４を押圧するシャント付きの金属製の
コイルバネ５と、このコイルバネ５を押圧する金属板６
と、碍子３を被せた金属蓋７と、避雷器本体４の周囲に
等分間隔で４本立設されているとともに金属板６を貫通
したガイド棒８とを備えている。避雷器本体４は両面に
溶射等によるアルミニウムの電極９を有する素子１０が
百数十枚積層されて構成されている。ガイド棒８は、避
雷器１に横方向の力が加わったときに、避雷器本体４の
各素子１０が横ずれするのを防止している。2. Description of the Related Art FIG. 4 is a sectional view of a conventional lightning arrester, and FIG. 5 is a perspective view of a voltage non-linear type device shown in FIG. The lightning arrester 1
A pedestal 2 having a central part protruding, a cylindrical insulator 3 mounted on the pedestal 2, an arrester main body 4 disposed in the insulator 3, and a metal coil spring with a shunt for pressing the arrester main body 4. 5 and a metal plate 6 for pressing the coil spring 5
And a metal cover 7 covered with the insulator 3, and four guide rods 8 erected at equal intervals around the lightning arrester main body 4 and penetrating through the metal plate 6. The lightning arrester main body 4 is configured by laminating one hundred and several tens of elements 10 having aluminum electrodes 9 formed on both sides by thermal spraying or the like. The guide rod 8 prevents each element 10 of the lightning arrester main body 4 from laterally shifting when a lateral force is applied to the lightning arrester 1.
【０００３】しかし、このガイド棒８を用いて素子１０
の横ずれを防止する方策は碍子３の外形を大きくするだ
けではなく、エボナイト等の材質で構成された高価なガ
イド棒８を使用しなければならず、避雷器が高価になっ
てしまう。また、素子１０の一部が横ずれを起こしてガ
イド棒８に接触した場合には、電極９−ガイド棒８−碍
子３内の不活性ガスによる所謂電気的トリプルジャンク
ションを形成して電界集中を誘起し、素子１０が損傷す
る場合がある。[0003] However, the element 10 is
In order to prevent the lateral displacement, not only the outer shape of the insulator 3 must be increased, but also an expensive guide rod 8 made of a material such as ebonite must be used, resulting in an expensive lightning arrester. Further, when a part of the element 10 is laterally shifted and comes into contact with the guide rod 8, a so-called electric triple junction is formed by the electrode 9, the guide rod 8 and the inert gas in the insulator 3 to induce electric field concentration. However, the element 10 may be damaged.
【０００４】特開平７−２１１５２０号公報および特開
平８−４５７０８号公報には、上記のような問題点を解
消する避雷器が示されている。両公報に記載された避雷
器では、素子の両端面にＡｇ粉末を含む導電性エポキシ
接着剤を塗布し、さらに素子間に一定の接着層を与える
スペーサとして、一部切り欠いた薄板の金属リングを介
在させ、素子同士を接着している。これらの避雷器では
ガイド棒を必要とせずして、素子の横ずれを防止する手
段としては効果ある。また、電気的トリプルジャンクシ
ョン形成の回避にも効果的である。Japanese Patent Application Laid-Open Nos. 7-21520 and 8-45708 disclose lightning arresters that solve the above-mentioned problems. In the lightning arresters described in both publications, a conductive metal epoxy adhesive containing Ag powder is applied to both end surfaces of the element, and a thin metal ring of a partially cut-out sheet is used as a spacer for providing a constant adhesive layer between the elements. The elements are interposed and the elements are bonded to each other. These lightning arresters are effective as means for preventing lateral displacement of the element without the need for a guide rod. It is also effective in avoiding formation of an electric triple junction.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記公
報に記載の避雷器では下記の問題点があった。イ 導電
性エポキシ接着剤は熱硬化性であり、いったん硬化させ
ると軟化させることができず、接着した素子の分離が不
可能であり、素子が積層され接着剤が硬化された後に
は、例えば素子の交換ができない。ロ 接着剤は硬化収
縮が大きく、スペーサの金属リングにより接着剤の接着
部位が拘束され、接着硬化後には大きなストレスが接着
剤に残留し、避雷器の連続操作中に熱ストレスで接着層
が剥離するおそれがある。However, the lightning arrester described in the above publication has the following problems. B) The conductive epoxy adhesive is thermosetting, cannot be softened once cured, cannot separate the bonded elements, and after the elements are laminated and the adhesive is cured, for example, Can not be replaced. (B) The adhesive has a large curing shrinkage, the adhesive part of the adhesive is restrained by the metal ring of the spacer, a large stress remains in the adhesive after adhesive curing, and the adhesive layer peels off due to thermal stress during continuous operation of the lightning arrester There is a risk.
【０００６】この発明は、かかる問題点を解決すること
を課題とするもので、素子が積層され、接着剤が硬化さ
れた後でも素子の分離が可能であり、また熱ストレスで
接着層が剥離するおそれを低減することができる等の避
雷器、およびその製造方法を得ることを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and it is possible to separate elements even after the elements are laminated and the adhesive is cured, and the adhesive layer is peeled off by thermal stress. It is an object of the present invention to obtain a lightning arrester capable of reducing the risk of occurrence, and a method of manufacturing the same.
【０００７】[0007]
【課題を解決するための手段】この発明の請求項１に係
る避雷器は、碍子内に避雷器本体が収納された避雷器で
あって、避雷器本体は、複数段に積層され両面に電極を
有する電圧非直線型の素子と、隣接した素子同士を接着
した接着層とを有し、かつこの接着層は導電性粉末を含
む熱可塑性樹脂からなる接着剤で構成されたものであ
る。A lightning arrester according to a first aspect of the present invention is a lightning arrester having a lightning arrester main body accommodated in an insulator, wherein the lightning arrester main body is laminated in a plurality of stages and has a voltage non-voltage. It has a linear element and an adhesive layer that bonds adjacent elements together, and this adhesive layer is made of an adhesive made of a thermoplastic resin containing a conductive powder.
【０００８】また、請求項２に係る避雷器では、導電性
粉末は銀粉末である。[0008] In the lightning arrester according to claim 2, the conductive powder is silver powder.
【０００９】また、請求項３に係る避雷器では、熱可塑
性樹脂はポリウレタンである。In the lightning arrester according to the third aspect, the thermoplastic resin is polyurethane.
【００１０】また、請求項４に係る避雷器では、接着層
の厚みは０．０５ｍｍ〜０．２５ｍｍである。[0010] In the lightning arrester according to the fourth aspect, the thickness of the adhesive layer is 0.05 mm to 0.25 mm.
【００１１】また、請求項５に係る避雷器の製造方法
は、導電性粉末を含む熱可塑性樹脂で構成されたシート
状の接着剤を素子の片面に載せ、所定の荷重を加えた状
態で所定の時間、所定の温度で加熱し、冷却して接着剤
を素子に仮接着する工程と、次に、片面に接着剤が仮接
着された素子を、複数個重ね合わせ、所定の荷重を加え
た状態で、所定の時間、所定の温度で加熱し、冷却して
接着剤で隣接した素子同士を本接着して避雷器本体を形
成する工程と、この避雷器本体を前記碍子内に収納する
工程とを含むものである。According to a fifth aspect of the present invention, in the method for manufacturing a lightning arrester, a sheet-like adhesive made of a thermoplastic resin containing a conductive powder is placed on one surface of the element, and a predetermined load is applied thereto under a predetermined load. Heating at a predetermined temperature for a time, cooling and temporarily bonding the adhesive to the element, and then stacking a plurality of elements with the adhesive temporarily bonded on one side and applying a predetermined load The method includes the steps of heating and cooling at a predetermined temperature for a predetermined period of time, cooling and permanently bonding adjacent elements with an adhesive to form a lightning arrester body, and storing the lightning arrester body in the insulator. It is a thing.
【００１２】また、請求項６に係る避雷器の製造方法
は、碍子内に、導電性粉末を含む熱可塑性樹脂で構成さ
れたシート状の接着剤を介在させて素子を順次積み重ね
る工程と、次に、この積層された前記素子に所定の荷重
を加えた状態で、所定の時間、所定の温度で加熱し、冷
却して前記接着剤で隣接した素子同士を接着して避雷器
本体を形成する工程とを含むものである。The method for manufacturing a lightning arrester according to claim 6 is a step of sequentially stacking elements with a sheet-like adhesive made of a thermoplastic resin containing a conductive powder in an insulator, and A step of heating at a predetermined temperature for a predetermined time while applying a predetermined load to the stacked elements, cooling and bonding adjacent elements with the adhesive to form a lightning arrester body. Is included.
【００１３】[0013]
【発明の実施の形態】実施の形態１．図１はこの発明の
実施の形態１の避雷器の断面図である。避雷器１１は、
中心部が突出した台座２と、この台座２に載置された円
筒状の碍子３と、この碍子３内に配置された避雷器本体
１２と、避雷器本体１２を押圧するシャント付きの金属
製のコイルバネ５と、このコイルバネ５を押圧する金属
板６と、碍子３を被せた金属蓋７とを備えている。避雷
器本体１２は、両面に溶射等によるアルミニウムの電極
９を有し、直径１００ｍｍ、高さ２０ｍｍの電圧非直線
型素子１０と、この素子１０同士を接着して素子１０を
多段に積層した接着層１３と、両端部に設けられた第１
の金属板１４ａおよび第２の金属板１４ｂとを備えてい
る。この接着層１３は、銀粉末を含むポリウレタンの熱
可塑性樹脂からなる接着剤で構成されており、この接着
層１３を介して素子１０が百数十枚積層されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a sectional view of an arrester according to Embodiment 1 of the present invention. The lightning arrester 11
A pedestal 2 whose central portion protrudes, a cylindrical insulator 3 mounted on the pedestal 2, an arrester main body 12 disposed in the insulator 3, and a metal coil spring with a shunt for pressing the arrester main body 12. 5, a metal plate 6 for pressing the coil spring 5, and a metal lid 7 covered with the insulator 3. The surge arrester body 12 has aluminum electrodes 9 formed by thermal spraying or the like on both sides, a voltage non-linear element 10 having a diameter of 100 mm and a height of 20 mm, and an adhesive layer in which the elements 10 are adhered to each other and the elements 10 are stacked in multiple stages. 13 and the first provided at both ends.
And a second metal plate 14b. The adhesive layer 13 is made of an adhesive made of a thermoplastic resin of polyurethane containing silver powder, and hundreds or more of the elements 10 are laminated via the adhesive layer 13.
【００１４】次に、上記構成の避雷器１１の製造手順に
ついて説明する。先ず、銀粉末を含むポリウレタンの熱
可塑性樹脂で構成されたシート状の接着剤１７（厚さ
０．１ｍｍ）の両面に離型フィルム１５を有する接着剤
シート１６（例えば、ＳＴＡＹＳＴＩＣＫ、 テクノア
ルファ社の商標名である。）を素子１０と同一の１００
ｍｍ径の円形に打ち抜き加工する（図２（ａ）参照）。
次に、片側の離型フィルム１５ａを剥離し、接着剤シー
ト１６の剥離面を素子１０の片面に載せ（図２（ｂ）参
照）、１００〜２００ｇ／ｃｍ2の荷重を加えて１００
〜１２０℃のオーブン中で３０〜６０分間加熱し、接着
剤１７を軟化させた後、自然冷却して接着剤１７を硬化
させ、素子１０に仮接着する。なお、荷重を加えるの
は、主に素子１０の電極９と接着剤１７との間に介在す
る空気を除去するためである。その後、もう一方の離型
フィルム１５ｂを剥離する（図２（ｃ）参照）。このよ
うにして、片面に接着剤１７が仮接着された素子１０を
複数個用意する。Next, the manufacturing procedure of the lightning arrester 11 having the above configuration will be described. First, an adhesive sheet 16 having a release film 15 on both sides of a sheet-like adhesive 17 (thickness 0.1 mm) made of a thermoplastic resin of polyurethane containing silver powder (for example, STAYSTICK, manufactured by Techno Alpha Co., Ltd.) Is a trademark name).
It is punched into a circle having a diameter of mm (see FIG. 2A).
Next, the release film 15a on one side is peeled off, the peeled surface of the adhesive sheet 16 is placed on one side of the element 10 (see FIG. 2 (b)), and a load of 100 to 200 g / cm 2 is applied to 100
After heating in an oven at 120 ° C. for 30 to 60 minutes to soften the adhesive 17, the adhesive 17 is naturally cooled to harden the adhesive 17 and is temporarily bonded to the element 10. The load is applied mainly to remove air interposed between the electrode 9 of the element 10 and the adhesive 17. Thereafter, the other release film 15b is peeled off (see FIG. 2C). In this way, a plurality of elements 10 having the adhesive 17 temporarily bonded to one side are prepared.
【００１５】次に、避雷器１１の製造に供される素子１
０を肉眼検査で選択する。つまり、素子１０の電極９と
接着剤１７との間に空気層が介在した素子１０を除去す
る。Next, the element 1 used for manufacturing the lightning arrester 11 will be described.
0 is selected by visual inspection. That is, the element 10 having the air layer interposed between the electrode 9 of the element 10 and the adhesive 17 is removed.
【００１６】次に、接着剤シート１６の両側の離型フィ
ルム１５ａ、１５ｂを剥離し、シート状の接着剤１７を
第１の金属板１４ａ上に載置し、その上に接着剤１７が
仮接着された素子１０を、接着剤１７側を上にして百数
十枚積み重ね、最後に第２の金属板１４ｂを重ねる。そ
の次に、１ｋｇ／ｃｍ2以上の荷重を第２の金属板１４
ｂの上面から加えて１６０〜２００℃のオーブン中で６
０分程度加熱し、接着剤１７を軟化させ、その後自然冷
却して接着剤１７を硬化させて、隣接した素子１０同
士、および素子１０と金属板１４ａ、１４ｂとを本接着
し、金属板１４ａ、１４ｂと素子１０との間、および素
子１０間に接着層１３が介在したブロック状の避雷器本
体１２を形成する。なお、荷重を加えるのは、主に素子
１０の電極９と接着剤１７との間、および金属板１４
ａ、１４ｂと接着剤１７との間にある空気層を除去する
ためである。Next, the release films 15a and 15b on both sides of the adhesive sheet 16 are peeled off, and a sheet-like adhesive 17 is placed on the first metal plate 14a. One hundred and several tens of the bonded elements 10 are stacked with the adhesive 17 side up, and finally the second metal plate 14b is stacked. Then, a load of 1 kg / cm 2 or more is applied to the second metal plate 14.
b in an oven at 160 to 200 ° C.
Heating is performed for about 0 minutes to soften the adhesive 17, then naturally cool the adhesive 17 to harden it, and permanently bond the adjacent elements 10, and the elements 10 and the metal plates 14a and 14b, to form the metal plate 14a. , 14b and the element 10, and the block-shaped lightning arrester body 12 with the adhesive layer 13 interposed between the elements 10. The load is mainly applied between the electrode 9 of the element 10 and the adhesive 17 and the metal plate 14.
This is to remove the air layer between the a and b and the adhesive 17.
【００１７】最後に、この避雷器本体１２を碍子３内に
収納し、第２の金属板１４ｂ上にコイルバネ５を載置
し、碍子３の上面に金属蓋７を固体することで、避雷器
１１の製造が完了する。Finally, the lightning arrester main body 12 is housed in the insulator 3, the coil spring 5 is placed on the second metal plate 14b, and the metal lid 7 is solidified on the upper surface of the insulator 3, so that the lightning arrester 11 Manufacturing is completed.
【００１８】次に、避雷器１１の別の製造手順について
説明する。先ず、碍子３内で、接着剤シート１６の両側
の離型フィルム１５を剥離したシート状の接着剤１７を
第１の金属板１４ａ上に載置し、その上に素子１０、接
着剤１７を順次重ね、最後に第２の金属板１４ｂを重ね
る。次に、１ｋｇ／ｃｍ2以上の荷重を第２の金属板１
４ｂの上面から加えた状態で、碍子３ごと１６０〜２０
０℃のオーブン中に入れて、６０分程度加熱し、接着剤
１７を軟化させ，引き続き自然冷却して接着剤１７を硬
化させ、金属板１４ａ、１４ｂと素子１０との間、およ
び素子１０間に接着層１３が介在したブロック状の避雷
器本体１２を形成する。最後に、第２の金属板１４ｂ上
にコイルバネ５を載置し、碍子３の上面に金属蓋７を固
体することで、避雷器１１の製造が完了する。Next, another manufacturing procedure of the lightning arrester 11 will be described. First, in the insulator 3, a sheet-like adhesive 17 from which the release films 15 on both sides of the adhesive sheet 16 have been peeled is placed on the first metal plate 14a, and the element 10 and the adhesive 17 are placed thereon. The second metal plate 14b is finally stacked. Next, a load of 1 kg / cm 2 or more is applied to the second metal plate 1.
4b, 160 to 20 together with the insulator 3
It is placed in an oven at 0 ° C. and heated for about 60 minutes to soften the adhesive 17, and then cool naturally to cure the adhesive 17, between the metal plates 14 a and 14 b and the element 10, and between the elements 10. Then, a block-shaped lightning arrester body 12 with an adhesive layer 13 interposed therebetween is formed. Finally, the coil spring 5 is placed on the second metal plate 14b, and the metal cover 7 is solidified on the upper surface of the insulator 3, whereby the manufacture of the lightning arrester 11 is completed.
【００１９】この避雷器１１の製造方法は先に説明した
製造方法と異なり、素子１０に接着剤１７を仮接着する
工程が削除されており、それだけ簡単に避雷器１１を製
造することができる。The method of manufacturing the lightning arrester 11 differs from the above-described manufacturing method in that the step of temporarily adhering the adhesive 17 to the element 10 is omitted, and the lightning arrester 11 can be manufactured more simply.
【００２０】なお、上記実施の形態では厚さ０．１ｍｍ
の接着剤１７を用いたが、その厚さは、０．０５ｍｍ〜
０．２５ｍｍの範囲であれば、同じ接着性能を達成する
ことができる。接着剤１７が０．０５ｍｍより薄い場合
には接着力は不十分であり、隣接した素子１０間の十分
な接着強度を発揮できない。また、０．２５ｍｍより厚
い場合には、初期の接着強度は十分であるが、避雷器の
連続操作中に熱ストレスにより接着層１３に剥離が生じ
易くなり、不適である。なお、接着剤１７は加熱され、
荷重が加えられて接着層１３になるが、その間において
厚みに殆ど変動がない。なお、導電性粉末を含む熱可塑
性樹脂として例えばカーボン粉末、または銅粉末を熱可
塑性樹脂に含有させるようにしてもよい。In the above embodiment, the thickness is 0.1 mm.
Was used, the thickness of which was 0.05 mm
Within the range of 0.25 mm, the same adhesive performance can be achieved. If the thickness of the adhesive 17 is less than 0.05 mm, the adhesive strength is insufficient, so that sufficient adhesive strength between the adjacent elements 10 cannot be exhibited. If the thickness is larger than 0.25 mm, the initial adhesive strength is sufficient, but the adhesive layer 13 is likely to peel off due to thermal stress during the continuous operation of the lightning arrester, which is not suitable. The adhesive 17 is heated,
When a load is applied, the adhesive layer 13 is formed, but there is almost no change in the thickness during that time. Note that, for example, a carbon powder or a copper powder may be included in the thermoplastic resin as the thermoplastic resin containing the conductive powder.
【００２１】[0021]
【発明の効果】以上説明したように、この発明の避雷器
によれば、避雷器本体は、複数段に積層され両面に電極
を有する電圧非直線型の素子と、隣接した素子同士を接
着した接着層とを有し、かつこの接着層は導電性粉末を
含む熱可塑性樹脂からなる接着剤で構成されているの
で、例えば損傷した素子を除去する場合には、接着層を
加熱軟化させることで素子を簡単に除去することができ
る。また、接着硬化後には大きなストレスが接着層に残
留してなく、避雷器の連続操作中に熱ストレスで接着層
が剥離するおそれが低減される。As described above, according to the surge arrester of the present invention, the surge arrester main body is composed of a voltage non-linear element having a plurality of stacked layers and electrodes on both sides, and an adhesive layer formed by adhering adjacent elements. And this adhesive layer is made of an adhesive made of a thermoplastic resin containing a conductive powder.For example, when removing a damaged element, the element is heated and softened so that the adhesive layer is softened. It can be easily removed. Further, after the adhesive is cured, no large stress remains on the adhesive layer, and the risk of the adhesive layer peeling off due to thermal stress during continuous operation of the lightning arrester is reduced.
【００２２】また、請求項２に係る避雷器では、導電性
粉末は銀粉末であるので、低コストで導電性のよい接着
層を得ることができる。In the lightning arrester according to the second aspect, since the conductive powder is silver powder, an adhesive layer having good conductivity can be obtained at low cost.
【００２３】また、請求項３に係る避雷器では、熱可塑
性樹脂はポリウレタンであるので、低コストで熱可塑性
の接着層を得ることができる。In the lightning arrester according to the third aspect, since the thermoplastic resin is polyurethane, a thermoplastic adhesive layer can be obtained at low cost.
【００２４】また、請求項４に係る避雷器では、接着層
の厚みは０．０５ｍｍ〜０．２５ｍｍであるので、接着
層の接着強度は十分であり、かつ避雷器の連続操作中に
熱ストレスによる接着層の剥離が生じにくい。In the lightning arrester according to the fourth aspect, since the thickness of the adhesive layer is 0.05 mm to 0.25 mm, the adhesive strength of the adhesive layer is sufficient, and the adhesive due to thermal stress during continuous operation of the lightning arrester. The layer is hardly peeled off.
【００２５】また、請求項５に係る避雷器の製造方法で
は、導電性粉末を含む熱可塑性樹脂で構成されたシート
状の接着剤を素子の片面に載せ、所定の荷重を加えた状
態で所定の時間、所定の温度で加熱し、冷却して接着剤
を素子に仮接着する工程と、次に、片面に接着剤が仮接
着された素子を、複数個重ね合わせ、所定の荷重を加え
た状態で、所定の時間、所定の温度で加熱し、冷却して
接着剤で隣接した素子同士を本接着して避雷器本体を形
成する工程と、この避雷器本体を前記碍子内に挿入する
工程とを含むので、製造途中で、素子と接着剤との間に
空気層が介在した不良部品を除去することができ、性能
の高い避雷器を得ることができる。In the method for manufacturing a lightning arrester according to claim 5, a sheet-like adhesive made of a thermoplastic resin containing a conductive powder is placed on one surface of the element, and a predetermined load is applied thereto under a predetermined load. Heating at a predetermined temperature for a time, cooling and temporarily bonding the adhesive to the element, and then stacking a plurality of elements with the adhesive temporarily bonded on one side and applying a predetermined load A step of heating at a predetermined temperature for a predetermined time, cooling, and permanently bonding adjacent elements with an adhesive to form a lightning arrester body, and inserting the lightning arrester body into the insulator. Therefore, a defective part having an air layer interposed between the element and the adhesive can be removed during the manufacturing, and a lightning arrester with high performance can be obtained.
【００２６】また、請求項６に係る避雷器の製造方法
は、碍子内に、導電性粉末を含む熱可塑性樹脂で構成さ
れたシート状の接着剤を介在させて素子を順次積み重ね
る工程と、次に、この積層された前記素子に所定の荷重
を加えた状態で、所定の時間、所定の温度で加熱し、冷
却して前記接着剤で隣接した素子同士を接着して避雷器
本体を形成する工程とを含むので、接着剤の加熱、冷却
工程は一工程ですみ、請求項５に係る避雷器の製造方法
と比較して避雷器を簡単に製造することができる。The method for manufacturing a lightning arrester according to claim 6 includes a step of sequentially stacking elements with a sheet-like adhesive made of a thermoplastic resin containing a conductive powder interposed in the insulator; A step of heating at a predetermined temperature for a predetermined time while applying a predetermined load to the stacked elements, cooling and bonding adjacent elements with the adhesive to form a lightning arrester body. Therefore, only one heating and cooling process of the adhesive is required, and the lightning arrester can be easily manufactured as compared with the method for manufacturing a lightning arrester according to claim 5.
【図１】 この発明の実施の形態１の避雷器の断面図で
ある。FIG. 1 is a sectional view of an arrester according to Embodiment 1 of the present invention.
【図２】 図１の避雷器の製造途中の説明図である。FIG. 2 is an explanatory view of the lightning arrester of FIG. 1 in the course of manufacture.
【図３】 図１の避雷器の避雷器本体の断面図である。FIG. 3 is a sectional view of a lightning arrester main body of the lightning arrester of FIG. 1;
【図４】 従来の避雷器の断面図である。FIG. 4 is a sectional view of a conventional lightning arrester.
【図５】 図４の避雷器の素子の斜視図である。FIG. 5 is a perspective view of an element of the lightning arrester of FIG. 4;
３ 碍子、１０ 素子、１１ 避雷器、１２ 避雷器本
体、１３ 接着層、１７ 接着剤。3 Insulator, 10 element, 11 arrester, 12 arrester main body, 13 adhesive layer, 17 adhesive.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高田 良雄 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内 (72)発明者 清水 淳一 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Yoshio Takada, Inventor 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Junichi Shimizu 2-3-2, Marunouchi, Chiyoda-ku, Tokyo 2-3 Rishi Electric Co., Ltd.
Claims (6)
であって、 避雷器本体は、複数段に積層され両面に電極を有する電
圧非直線型の素子と、隣接した素子同士を接着した接着
層とを有し、かつこの接着層は導電性粉末を含む熱可塑
性樹脂からなる接着剤で構成された避雷器。1. A lightning arrester in which an arrester main body is accommodated in an insulator, wherein the arrester main body is laminated in a plurality of stages and has a voltage non-linear type element having electrodes on both surfaces, and an adhesive layer for adjoining adjacent elements. And an adhesive layer comprising an adhesive made of a thermoplastic resin containing a conductive powder.
載の避雷器。2. The lightning arrester according to claim 1, wherein the conductive powder is silver powder.
項１または請求項２に記載の避雷器。3. The arrester according to claim 1, wherein the thermoplastic resin is polyurethane.
ｍｍである請求項１ないし請求項３の何れかに記載の避
雷器。4. The thickness of the adhesive layer is 0.05 mm to 0.25.
The lightning arrester according to any one of claims 1 to 3, wherein the distance is in mm.
を有する電圧非直線型の素子および隣接した素子同士を
接着した接着層を有する避雷器本体が内蔵された避雷器
の製造方法であって、 導電性粉末を含む熱可塑性樹脂で構成されたシート状の
接着剤を前記素子の片面に載せ、所定の荷重を加えた状
態で所定の時間、所定の温度で加熱し、冷却して接着剤
を素子に仮接着する工程と、 次に、片面に接着剤が仮接着された素子を、複数個重ね
合わせ、所定の荷重を加えた状態で、所定の時間、所定
の温度で加熱し、冷却して接着剤で隣接した素子同士を
本接着して前記避雷器本体を形成する工程と、 この避雷器本体を前記碍子内に収納する工程とを含む避
雷器の製造方法。5. A method for manufacturing a lightning arrester having a built-in lightning arrester having a voltage non-linear element laminated in a plurality of stages and having electrodes on both sides and an adhesive layer in which adjacent elements are adhered to each other in an insulator. A sheet-like adhesive made of a thermoplastic resin containing a conductive powder is placed on one surface of the element, heated at a predetermined temperature for a predetermined time under a predetermined load, cooled, and cooled. And a step of temporarily bonding the element to the element, and then, a plurality of elements having the adhesive temporarily bonded to one side thereof are superimposed, heated under a predetermined load, for a predetermined time, at a predetermined temperature, and cooled. A method for manufacturing a lightning arrester, comprising the steps of: permanently adhering adjacent elements with an adhesive to form the lightning arrester body; and housing the lightning arrester body in the insulator.
を有する電圧非直線型の素子および隣接した素子同士を
接着した接着層を有する避雷器本体が内蔵された避雷器
の製造方法であって、 前記碍子内に、導電性粉末を含む熱可塑性樹脂で構成さ
れたシート状の接着剤を介在させて前記素子を順次積み
重ねる工程と、 次に、この積層された前記素子に所定の荷重を加えた状
態で、所定の時間、所定の温度で加熱し、冷却して前記
接着剤で隣接した素子同士を接着して前記避雷器本体を
形成する工程と、 を含む避雷器の製造方法。6. A method for manufacturing a lightning arrester having a built-in lightning arrester having a voltage non-linear element laminated in a plurality of stages and having electrodes on both sides and an adhesive layer in which adjacent elements are adhered inside an insulator. A step of sequentially stacking the elements in the insulator with a sheet-like adhesive made of a thermoplastic resin containing conductive powder interposed therebetween, and then applying a predetermined load to the stacked elements. Heating at a predetermined temperature for a predetermined time, cooling, and bonding adjacent elements with the adhesive to form the lightning arrester body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11530198A JP4121049B2 (en) | 1998-04-24 | 1998-04-24 | Lightning arrester and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11530198A JP4121049B2 (en) | 1998-04-24 | 1998-04-24 | Lightning arrester and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11307313A true JPH11307313A (en) | 1999-11-05 |
| JP4121049B2 JP4121049B2 (en) | 2008-07-16 |
Family
ID=14659254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11530198A Expired - Fee Related JP4121049B2 (en) | 1998-04-24 | 1998-04-24 | Lightning arrester and manufacturing method thereof |
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| Country | Link |
|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005011312A (en) * | 2003-05-29 | 2005-01-13 | Matsushita Electric Ind Co Ltd | Transparent touch panel |
-
1998
- 1998-04-24 JP JP11530198A patent/JP4121049B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005011312A (en) * | 2003-05-29 | 2005-01-13 | Matsushita Electric Ind Co Ltd | Transparent touch panel |
| JP4622249B2 (en) * | 2003-05-29 | 2011-02-02 | パナソニック株式会社 | Transparent touch panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4121049B2 (en) | 2008-07-16 |
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