JPH11297564A - Hermetic receptacle for electric device - Google Patents
Hermetic receptacle for electric deviceInfo
- Publication number
- JPH11297564A JPH11297564A JP10097490A JP9749098A JPH11297564A JP H11297564 A JPH11297564 A JP H11297564A JP 10097490 A JP10097490 A JP 10097490A JP 9749098 A JP9749098 A JP 9749098A JP H11297564 A JPH11297564 A JP H11297564A
- Authority
- JP
- Japan
- Prior art keywords
- insulator
- upper lid
- container
- opening
- electric device
- 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
Landscapes
- Insulators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、コンデンサ等の電
気機器に使用される密閉形電気機器用容器における碍子
形端子取付部の気密性改善に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improving the airtightness of an insulator-type terminal mounting portion in a container for a closed electric device used for electric devices such as a capacitor.
【０００２】[0002]
【従来の技術】従来の密閉形電気機器用容器の上蓋への
碍子形端子の取付けは、図６の断面図に示したように、
上蓋開口部の周縁に環状段差部を設けた構造のものが一
般的に用いられている。また、図７は、上蓋２２の碍子
形端子取付部の一実施例の図面で、（ａ）は平面図、
（ｂ）は正断面図である。図８は、碍子形端子に用いら
れる第１碍子１の一実施例の図面で、（ａ）は平面図お
よび上部からの斜視図、（ｂ）は一部正断面図、（ｃ）
は底面図および底部からの斜視図である。図９は、碍子
形端子に用いられる第２碍子７の一実施例の図面で、
（ａ）は平面図、（ｂ）は正断面図、（ｃ）は上部から
の部分断面斜視図である。第１碍子１は、アルミナを主
成分として形成された物理・機械特性の優れた材料から
なり、一端開口部を太鼓状の凸部３ａと平面部３ｂとか
らなる挿入部３とし、他端開口部を多角形状の凹部２ａ
と該凹部内の段差部２ｂと平面部２ｃとからなる台座部
２として、中心部に端子貫通孔４を設けている。また、
ボルト端子５は、上記貫通孔を貫通して上記第１碍子の
多角形状の凹部２ａと嵌合する多角形状鍔部６を有し、
頭部に外部接続のためのネジ部、下部にもネジ部を有す
る導体である。内部に電気機器本体を収容する密閉形電
気機器用容器の上蓋２２は、上記第１碍子の太鼓状の凸
部３ａに嵌合した開口部２３を具備し、上記開口部の周
縁に環状段差部２４を絞り加工により形成したものであ
る。第２碍子７は、アルミナを主成分として形成された
物理・機械特性の優れた材料からなり、一端開口部に環
状段差部１６を有し、端子貫通孔１７を有するととも
に、上記開口部に複数個の溝１８を有している。リング
状のパッキング８、９は第１碍子１とボルト端子５の多
角形状鍔部６および上蓋２２の環状段差部２４との接触
面を経て油やガスが漏洩するのを防止するためのもので
あり、上記上蓋の環状段差部は上記パッキングが要求す
る所定の寸法精度を加味して形成されている。2. Description of the Related Art As shown in a sectional view of FIG.
A structure in which an annular step is provided on the periphery of the upper lid opening is generally used. FIGS. 7A and 7B are diagrams of an embodiment of the insulator-type terminal mounting portion of the upper lid 22. FIG.
(B) is a front sectional view. FIGS. 8A and 8B are drawings of one embodiment of the first insulator 1 used for the insulator type terminal, wherein FIG. 8A is a plan view and a perspective view from above, FIG.
Is a bottom view and a perspective view from the bottom. FIG. 9 is a drawing of an embodiment of the second insulator 7 used for the insulator type terminal.
(A) is a plan view, (b) is a front sectional view, and (c) is a partial sectional perspective view from above. The first insulator 1 is made of a material having excellent physical and mechanical characteristics formed mainly of alumina, and has an opening at one end as an insertion portion 3 comprising a drum-shaped convex portion 3a and a flat portion 3b, and an opening at the other end. Part is a polygonal concave portion 2a
And a pedestal portion comprising a step portion 2b and a flat portion 2c in the concave portion
As No. 2 , a terminal through hole 4 is provided at the center. Also,
The bolt terminal 5 has a polygonal flange portion 6 that penetrates the through hole and fits into the polygonal concave portion 2a of the first insulator.
A conductor having a screw portion for external connection on the head and a screw portion on the lower portion. The upper lid 22 of the closed electrical equipment container accommodating the electrical equipment main body has an opening 23 fitted into the drum-shaped projection 3a of the first insulator, and an annular stepped portion is formed around the opening. 24 is formed by drawing. The second insulator 7 is made of a material having excellent physical and mechanical properties formed mainly of alumina, has an annular stepped portion 16 at one end opening, has a terminal through hole 17, and has a plurality of It has grooves 18. The ring-shaped packings 8 and 9 are for preventing oil and gas from leaking through the contact surface between the first insulator 1 and the polygonal flange 6 of the bolt terminal 5 and the annular step 24 of the upper lid 22. In addition, the annular step portion of the upper lid is formed in consideration of a predetermined dimensional accuracy required by the packing.
【０００３】次に、この碍子形端子を上蓋２２に取付け
て、固定する要領について説明する。多角形状鍔部６を
有するボルト端子５にリング状の第１パッキング８を所
定の位置まで挿入し、上記ボルト端子を第１碍子開口部
の台座部２の貫通孔側より挿入する。次に上蓋２２に形
成された環状段差部２４に第２パッキング９を取付け
て、ボルト端子５の貫通した第１碍子１の挿入部３を上
記上蓋に加工した開口部２３に挿入し嵌合させる。更
に、上記挿入側の上記上蓋を介して反対側から上記第１
碍子の太鼓状の凸部３ａに第２碍子７を嵌合させ、その
後ボルト端子の下部ネジ部にワッシャ１９、スプリング
ワッシャ２０、ナット２１にて規定締付トルクにて締付
けることにより、第２碍子７の環状段差部１６の凹寸法
と第１碍子１の太鼓状の凸部３ａの寸法は、パッキング
の圧縮率に支障を起こさないよう寸法精度を加味して決
定しているので、一定のパッキング圧縮率が得られてい
る。Next, a procedure for attaching and fixing the insulator type terminal to the upper lid 22 will be described. The ring-shaped first packing 8 is inserted into the bolt terminal 5 having the polygonal flange 6 to a predetermined position, and the bolt terminal is inserted from the through hole side of the pedestal portion 2 of the first insulator opening. Next, the second packing 9 is attached to the annular step portion 24 formed on the upper lid 22, and the insertion portion 3 of the first insulator 1 through which the bolt terminal 5 has penetrated is inserted and fitted into the opening 23 formed in the upper lid. . Further, the first lid is inserted from the opposite side through the upper lid on the insertion side.
The second insulator 7 is fitted into the drum-shaped convex portion 3a of the insulator, and then the lower insulator of the bolt terminal is tightened with a washer 19, a spring washer 20, and a nut 21 with a specified tightening torque. Since the concave dimension of the annular step portion 7 of FIG. 7 and the dimension of the drum-shaped convex portion 3a of the first insulator 1 are determined in consideration of the dimensional accuracy so as not to affect the compressibility of the packing, a fixed packing is provided. A compression ratio has been obtained.
【０００４】[0004]
【発明が解決しようとする課題】従来のコンデンサ等の
電気機器に使用される密閉形電気機器用容器の碍子形端
子を取付けた上蓋は上記の通りであり、その使用中にお
ける温度変化により、密閉形電気機器用容器の内圧が上
昇または下降するので、碍子形端子取付部の上蓋面が変
位し、上蓋に形成された環状段差部に取付けたパッキン
グの圧縮率の変化により密閉性が損なわれ、低い圧力上
昇で油漏れやガス漏れ等が発生するという問題点があっ
た。The above-mentioned upper lid to which the insulator type terminal of the container for a closed type electric device used for electric devices such as a capacitor is attached is as described above. As the internal pressure of the type electric equipment container rises or falls, the upper lid surface of the insulator type terminal mounting part is displaced, and the sealability is impaired due to the change in the compression ratio of the packing mounted on the annular step formed on the upper lid, There is a problem that oil leakage and gas leakage occur at a low pressure rise.
【０００５】本発明は、上記のような問題を解決するた
めになされたもので、密閉性が良く信頼性の高い密閉形
電気機器用容器を提供するものである。The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a highly reliable hermetically sealed container for electric equipment.
【０００６】[0006]
【課題を解決するための手段】すなわち、上蓋１０ａ
と、該上蓋１０ａにより封止される電気機器収納部１０
ｂと、該上蓋１０ａを介して、多角形状の凹部２ａを台
座部２に、また、太鼓状の凸部３ａを挿入部３に設けた
第１碍子１の該挿入部３に第２碍子７の凹部１６を嵌合
させ、上記台座部２の多角形状の凹部２ａ及び上蓋１０
ａの開口部１１の環状段差部１２に各々パッキング８、
９を配置し、ボルト締め固定した碍子形端子とを備えて
なる密閉形電気機器用容器１０において、上記上蓋１０
ａの開口部１１周縁に同心円状の環状突起１３を設けた
ことを特徴としている。Means for Solving the Problems That is, the upper lid 10a
And the electrical equipment storage unit 10 sealed by the upper lid 10a.
and b, through the upper lid 10a, recesses 2a of the polygonal shape pedestal 2, and the second insulator to the first insulator 1 of the insert 3 having a drum-shaped convex portions 3a to the insertion portion 3 7 the recess 16 is fitted in the recess 2a and the upper lid 10 of the polygonal shape of the base portion 2
Packing 8 on the annular step 12 of the opening 11 of FIG.
9 placed in sealed electrical equipment container 10 comprising a insulator type terminal bolted fixed, the upper cover 10
A characteristic is that a concentric annular projection 13 is provided on the periphery of the opening 11 of FIG.
【０００７】また、上記上蓋１０ａの板厚が０．４〜
２．３ｍｍであることを特徴としている。The thickness of the upper lid 10a is 0.4 to 0.4.
It is characterized by being 2.3 mm.
【０００８】さらに、上記第２碍子７と上蓋１０ａとの
間に、第１碍子１への挿入用開口部１５を有する緩衝物
１４を介在させたことを特徴としている。Further, a buffer 14 having an opening 15 for insertion into the first insulator 1 is interposed between the second insulator 7 and the upper lid 10a.
【０００９】[0009]
【発明の実施の形態】密閉形電気機器用容器の上蓋の開
口部周縁に形成した環状段差部の外周縁に、同心円状の
環状突起を設ける。上記環状段差部は第１碍子の挿入部
の凸部と嵌合できるよう同一形状とする。環状段差部と
第１碍子の挿入部の平面部との間に第２パッキングを取
付け、ボルト端子の貫通した第１碍子の太鼓状の凸部を
上蓋の開口部に挿入し、第２碍子を介してワッシャ、ス
プリングワッシャ、ナットで規定の締付トルクで締付け
る。BEST MODE FOR CARRYING OUT THE INVENTION A concentric annular projection is provided on the outer peripheral edge of an annular step formed on the peripheral edge of an opening of an upper lid of a closed type electric equipment container. The annular step portion has the same shape so that it can be fitted with the projection of the insertion portion of the first insulator. A second packing is attached between the annular step portion and the plane portion of the insertion portion of the first insulator, and the drum-shaped convex portion of the first insulator through which the bolt terminal has penetrated is inserted into the opening of the upper lid, and the second insulator is inserted. With a washer, spring washer and nut with the specified tightening torque.
【００１０】[0010]
【実施例１】図１は、本発明の密閉形電気機器用容器の
上蓋１０の碍子形端子取付部の一実施例の図面で、
（ａ）は平面図、（ｂ）は正断面図である。図２は、上
蓋に碍子形端子を取付けた一実施例の一部断面図であ
る。図３は、第２碍子と上蓋との間に第１碍子の太鼓状
の凸部に嵌合する開口部を有する緩衝物の一実施例の図
面で、（ａ）は平面図、（ｂ）は正断面図である。ま
た、図４は、上蓋に緩衝物を介して碍子形端子を取付け
た一実施例の一部断面図である。Embodiment 1 FIG. 1 is a drawing of an embodiment of an insulator type terminal mounting portion of an upper lid 10 of a container for a sealed electric device according to the present invention.
(A) is a plan view and (b) is a front sectional view. FIG. 2 is a partial cross-sectional view of one embodiment in which an insulator terminal is attached to an upper lid. FIGS. 3A and 3B are drawings of an embodiment of a buffer having an opening between the second insulator and the upper lid, the opening being fitted to the drum-shaped convex portion of the first insulator. FIG. 3A is a plan view, and FIG. Is a front sectional view. FIG. 4 is a partial cross-sectional view of an embodiment in which an insulator terminal is attached to the upper lid via a buffer.
【００１１】以下、本発明の一実施例を説明する。ここ
で、図６、図８、図９の従来例と同一構成要素には同一
番号を付けている。図１は、内部に電気機器本体を収容
する密閉形電気機器用容器の上蓋１０で、厚さ０．４〜
２．３ｍｍのブリキ板、電気亜鉛メッキ鋼鈑、または真
鍮板等の材料からなり、第１碍子の太鼓状の凸部３ａに
嵌合した開口部１１を具備し、上記開口部の周縁に環状
段差部１２を絞り加工により形成し、さらに環状段差部
の外周縁に同心円状の環状突起１３を形成したものであ
る。An embodiment of the present invention will be described below. Here, the same components as those of the conventional example of FIGS. 6, 8 and 9 are denoted by the same reference numerals. FIG. 1 shows an upper lid 10 of a closed type electric device container for accommodating an electric device main body therein, which has a thickness of 0.4 to 0.4 mm.
It is made of a material such as a 2.3 mm tin plate, an electrogalvanized steel plate, or a brass plate, and has an opening 11 fitted to the drum-shaped convex portion 3a of the first insulator. The step portion 12 is formed by drawing, and a concentric annular projection 13 is formed on the outer peripheral edge of the annular step portion.
【００１２】次に、碍子形端子を密閉形電気機器用容器
の上蓋１０に取付けて、固定する要領について説明す
る。図２に示すように、碍子形端子は、従来例の図６に
示した図８の第１碍子１と図９に示した第２碍子７と多
角形状鍔部を有するボルト端子５とリング状の第１パッ
キング８、第２パッキング９とで構成され、その取付方
法は［従来の技術］で図６にて説明したのと同様である
ので、ここでは詳細を詳述しない。Next, a procedure for attaching and fixing the insulator type terminal to the upper lid 10 of the closed type electric equipment container will be described. As shown in FIG. 2, the insulator-type terminal is composed of a first insulator 1 shown in FIG. 8 of a conventional example, a second insulator 7 shown in FIG. 9, a bolt terminal 5 having a polygonal flange, and a ring-shaped. The first packing 8 and the second packing 9 have the same mounting method as that described with reference to FIG. 6 in [Prior Art], and thus details thereof will not be described here.
【００１３】ここで、碍子形端子取付部の気密性を確認
するために、厚さ１．６ｍｍのブリキ板製の上蓋開口部
の環状段差部の外周縁に同心円状の環状突起を形成し、
図２に示すように碍子形端子を上蓋に規定トルクにて取
付けて、外形寸法が幅３４３ｍｍ×奥行１２５ｍｍ×高
さ２５０ｍｍ（試料Ａ）と５２０ｍｍ×１２０ｍｍ×２
７５ｍｍ（試料Ｂ）との２種類の密閉形電気機器用容器
を各々３台作製した。なお、比較用として密閉形電気機
器用容器の上蓋開口部の外周縁に同心円状の環状突起を
設けていない従来のものも、同じように碍子形端子を取
付けて同一寸法の密閉形電気機器用容器を各々３台作製
した。試験の方法は、密閉形電気機器用容器に予め液体
を充填した後、図５に示すように、液体注入口２５より
圧力センサ２６を介してポンプ２７にて液体を供給して
密閉形電気機器用容器の内圧を上昇させて碍子形端子取
付部からの液体の漏れの有無を試験する気密性試験であ
る。Here, in order to confirm the airtightness of the insulator-type terminal mounting portion, concentric annular projections are formed on the outer peripheral edge of the annular stepped portion of the 1.6 mm thick tin plate opening.
As shown in FIG. 2, the insulator type terminal was attached to the upper lid with a specified torque, and the outer dimensions were 343 mm in width × 125 mm in depth × 250 mm in height (sample A) and 520 mm × 120 mm × 2
Three 75 mm (sample B) types of hermetically sealed electric device containers were produced. For comparison, the conventional type without the concentric annular projection on the outer peripheral edge of the upper lid opening of the closed type electrical equipment container also has the same size as the sealed type electrical equipment with the insulator type terminal attached. Three containers were produced each. The test method is as follows. After the liquid is filled in a container for sealed electric equipment in advance, as shown in FIG. 5, liquid is supplied from a liquid inlet 25 by a pump 27 via a pressure sensor 26 and a sealed electric equipment. This is an airtightness test in which the internal pressure of the container is increased to test whether or not liquid leaks from the insulator-type terminal mounting portion.
【００１４】その気密性試験結果は表１に示す通りであ
り、上蓋に環状突起を設けていない従来例の場合は、小
さな容器（試料Ａ）では容器内圧３．４〜４．０ｋｇｆ
／ｃｍ2で、いずれも碍子形端子取付部より液体の漏れ
の発生が認められ、その時の上蓋変位は６．５〜８．０
ｍｍであり、また大きな容器（試料Ｂ）では容器内圧１
５．０〜１８．０ｋｇｆ／ｃｍ2でいずれも碍子形端子
取付部より液体の漏れの発生が認められ、その時の上蓋
変位は１５．０〜１７．０ｍｍであった。これに対し上
蓋に環状突起を設けている本発明の場合は、小さな容器
（試料Ａ）では容器内圧１０．０ｋｇｆ／ｃｍ2であっ
ても、碍子形端子取付部からいずれも液体の漏れの発生
はなく、その時の上蓋変位は６．０〜６．５ｍｍであっ
た。また大きな容器（試料Ｂ）では容器内圧４０．０ｋ
ｇｆ／ｃｍ2で、碍子形端子取付部からいずれも液体の
漏れの発生はなく、その時の上蓋変位は１３．０〜１
４．０ｍｍであった。この結果より、密閉形電気機器用
容器の上蓋開口部の周縁に形成した環状段差部の外周縁
に同心円状の環状突起を設けることにより、密閉形電気
機器用容器の内圧が高くなっても碍子形端子取付部の上
蓋変位は抑制され気密性が保持できることが分かる。
尚、ここで、上蓋の板厚は０．４〜２．３ｍｍの範囲が
適当であり、０．４ｍｍ未満の場合は強度面で問題があ
り、また、２．３ｍｍを越えると、加工がし難いため不
適当である。The results of the airtightness test are shown in Table 1. In the case of the conventional example having no annular projection on the upper lid, the internal pressure of the small container (sample A) is 3.4 to 4.0 kgf.
/ Cm 2 , leakage of liquid from the insulator-type terminal mounting portion was observed in all cases, and the displacement of the upper lid was 6.5 to 8.0 at that time.
mm for a large container (sample B).
In any case of 5.0 to 18.0 kgf / cm 2 , leakage of liquid from the insulator-type terminal mounting portion was observed, and the displacement of the upper lid at that time was 15.0 to 17.0 mm. On the other hand, in the case of the present invention in which the annular projection is provided on the upper lid, in the case of a small container (sample A), even if the internal pressure of the container is 10.0 kgf / cm 2 , any leakage of liquid occurs from the insulator-type terminal mounting portion. The top cover displacement at that time was 6.0 to 6.5 mm. For a large container (sample B), the internal pressure of the container is 40.0k.
gf / cm 2 , there was no leakage of liquid from any of the insulator-type terminal mounting portions, and the upper lid displacement at that time was 13.0 to 1
It was 4.0 mm. According to this result, by providing concentric annular projections on the outer peripheral edge of the annular step formed on the periphery of the upper lid opening of the closed electric equipment container, the insulator can be provided even if the internal pressure of the closed electric equipment container becomes high. It can be seen that the displacement of the upper lid of the shaped terminal mounting portion is suppressed and airtightness can be maintained.
Here, the thickness of the upper lid is appropriately in the range of 0.4 to 2.3 mm. If the thickness is less than 0.4 mm, there is a problem in strength. It is inappropriate because it is difficult.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【実施例２】図３は、第２碍子７と上蓋１０との間に第
１碍子１の太鼓状の凸部３ａに嵌合する開口部１５を有
するプレスボード、弾力性のあるラバーあるいは合成樹
脂よりなる緩衝物１４の図面であり、金属材料と磁器か
らなる碍子の温度膨張係数の異なる材料を使用した密閉
形電気機器容器と碍子形端子における温度、内圧の上昇
に対して、碍子形端子の取付部の温度膨張係数の違いに
よる面圧力増加に対する緩衝材としての働きをするもの
である。Embodiment 2 FIG. 3 shows a press board, an elastic rubber or a composite having an opening 15 between the second insulator 7 and the upper lid 10 which fits into the drum-shaped projection 3a of the first insulator 1. It is a drawing of a buffer material 14 made of resin, which is a sealed type electric equipment container using insulators made of metal materials and porcelains having different thermal expansion coefficients and insulator type terminals. This serves as a buffer against an increase in surface pressure due to a difference in the thermal expansion coefficient of the mounting portion.
【００１７】図４は、上蓋１０に緩衝物１４を介して碍
子形端子を取付けた一部断面図であり、第１パッキング
８を挿入したボルト端子５を第１碍子１に挿入し、上蓋
１０の環状段差部１２に第２パッキング９を取付けて、
ボルト端子５の貫通した第１碍子１の挿入部３を上記上
蓋の開口部１１に挿入嵌合させ、緩衝物１４の開口部１
５を第１碍子１の太鼓状の凸部３ａに挿入嵌合し、その
後上記挿入側の上記緩衝物を介して反対側から上記第１
碍子の太鼓状の凸部に第２碍子７を嵌合させ、その後ボ
ルト端子の下部ネジ部にワッシャ１９、スプリングワッ
シャ２０、ナット２１にて規定締付トルクにて締付け
る。FIG. 4 is a partial cross-sectional view in which an insulator type terminal is attached to the upper lid 10 via a buffer 14. The bolt terminal 5 with the first packing 8 inserted therein is inserted into the first insulator 1 , and the upper lid 10 is inserted. Attach the second packing 9 to the annular step portion 12 of
The insertion portion 3 of the first insulator 1 through which the bolt terminal 5 penetrates is inserted and fitted into the opening 11 of the upper lid, and the opening 1 of the buffer 14 is
5 is inserted and fitted into the drum-shaped convex portion 3a of the first insulator 1 , and then the first side is inserted from the opposite side via the buffer on the insertion side.
The second insulator 7 is fitted to the drum-shaped convex portion of the insulator, and then tightened to the lower screw portion of the bolt terminal with a washer 19, a spring washer 20, and a nut 21 with a specified tightening torque.
【００１８】ここで、碍子形端子取付部での緩衝材の挿
入効果について、冷熱サイクル試験にて確認を行った。
試料は、緩衝材として厚さ０．２５ｍｍのプレスボード
を挿入し、厚さ１．６ｍｍのブリキ板にて、上蓋は密閉
形電気機器用容器の上蓋開口部の環状段差部の外周縁に
同心円状の環状突起を形成したもので、外形寸法が幅３
４３ｍｍ×奥行１２５ｍｍ×高さ２５０ｍｍ（試料Ａ）
と５２０ｍｍ×１２０ｍｍ×２７５ｍｍ（試料Ｂ）の２
種類の密閉形電気機器用容器を各々３台作製した。な
お、比較用として緩衝材を挿入していない密閉形電気機
器用容器も同じように同一寸法で、各々３台作製した。Here, the effect of inserting the cushioning material in the insulator-type terminal mounting portion was confirmed by a cooling / heating cycle test.
For the sample, a 0.25 mm-thick press board was inserted as a cushioning material, and a 1.6 mm-thick tin plate was used. The upper lid was concentric with the outer peripheral edge of the annular step at the upper lid opening of the closed type electric device container. It is formed with a ring-shaped projection, and its external dimensions are width 3
43 mm x depth 125 mm x height 250 mm (sample A)
And 520 mm x 120 mm x 275 mm (sample B)
Three types of closed type electric equipment containers were produced. As a comparative example, three sealed electric device containers without a buffer material were similarly manufactured in the same size.
【００１９】試験は、密閉形電気機器用容器に液体を充
填したのち、冷熱衝撃試験器に密閉形電気機器用容器を
収容し、温度−２５℃に６時間放置、＋８５℃に６時間
放置を１サイクルとして、１００サイクルの冷熱サイク
ル試験を実施し試験終了後分解を行い、第２碍子の上蓋
面に接する個所を検査した。In the test, after the liquid was filled in a container for a closed electric device, the container for a closed electric device was placed in a thermal shock tester and left at a temperature of −25 ° C. for 6 hours and at a temperature of + 85 ° C. for 6 hours. As one cycle, a thermal cycle test of 100 cycles was performed, and after the test was completed, disassembly was performed, and a portion in contact with the upper lid surface of the second insulator was inspected.
【００２０】分解調査結果、緩衝材を挿入していない試
料は、第２碍子の上蓋面に接する円周部に微小な亀裂の
発生が碍子合計１８個のうち８個認められたのに対し、
緩衝材を挿入している試料は、碍子合計１８個とも第２
碍子の上蓋面に接する円周部に亀裂発生は認められなか
った。この結果より、組立時の応力や冷熱サイクル試験
時の熱膨張係数の違いによる応力が緩衝材に吸収され応
力緩和が生じ、亀裂の発生が抑制されることが判る。ま
た、ポリプロピレンからなる緩衝材についても同様の効
果が認められた。As a result of the disassembly investigation, in the sample without the cushioning material inserted, a minute crack was generated in the circumferential portion in contact with the upper lid surface of the second insulator out of eight out of a total of eighteen insulators.
The sample with the buffer material inserted was the second for all 18 insulators.
No cracks were found in the circumferential part in contact with the upper lid surface of the insulator. From this result, it can be seen that the stress caused by the difference in the stress at the time of assembling and the thermal expansion coefficient at the time of the thermal cycle test is absorbed by the buffer material, so that the stress is relaxed and the generation of cracks is suppressed. A similar effect was also observed with a cushioning material made of polypropylene.
【００２１】[0021]
【発明の効果】以上のように、本発明による密閉形電気
機器用容器は、碍子形端子取付部の上蓋開口部周縁の環
状段差部の外周縁に同心円状の環状突起を設けることに
より、密閉形電気機器用容器の内圧が大きく上昇し、上
蓋面が変位してもその碍子形端子取付部の上蓋面の変位
は小さく、上蓋に形成された環状段差部に挿入している
第２パッキングの圧縮率を一定に維持することができ、
油漏れ、ガス漏れ等を防止することができ、信頼性が向
上する。また、上蓋と第２碍子間に温度膨張係数の異な
る材料の膨張率差による面圧力増加を吸収する緩衝物を
挿入することにより、第２碍子の破損を防ぐことで密閉
性がよくなり、さらに信頼性が向上する。しかも、上蓋
面に補強材を使用する必要もなく安価に製作できるなど
の効果もあり、工業的ならびに実用的に価値大である。As described above, the sealed electric equipment container according to the present invention is hermetically sealed by providing concentric annular projections on the outer peripheral edge of the annular step around the upper lid opening of the insulator type terminal mounting portion. Even if the internal pressure of the container for the type electric equipment rises significantly and the upper lid surface is displaced, the displacement of the upper lid surface of the insulator type terminal mounting portion is small, and the second packing inserted into the annular step portion formed on the upper lid. The compression ratio can be kept constant,
Oil leakage, gas leakage, and the like can be prevented, and reliability is improved. Further, by inserting a buffer between the upper lid and the second insulator, which absorbs an increase in surface pressure due to a difference in expansion coefficient between materials having different thermal expansion coefficients, the breakage of the second insulator is prevented, thereby improving the sealing performance. Reliability is improved. In addition, there is an effect that it can be manufactured at a low cost without using a reinforcing material on the upper lid surface, which is industrially and practically large.
【図１】図１は本発明の密閉形電気機器用容器の上蓋の
碍子形端子取付部の一実施例の図面で、（ａ）は平面
図、（ｂ）は正断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a drawing of one embodiment of an insulator type terminal mounting portion of an upper lid of a sealed electric device container according to the present invention, wherein (a) is a plan view and (b) is a front sectional view.
【図２】図２は上蓋に碍子形端子を取付けた一実施例の
一部断面図である。FIG. 2 is a partial cross-sectional view of one embodiment in which an insulator terminal is attached to an upper lid.
【図３】図３は第２碍子と上蓋との間に第１碍子の太鼓
状の凸部に嵌合する開口部を有する緩衝物の一実施例の
図面で、（ａ）は平面図、（ｂ）は正断面図である。FIGS. 3A and 3B are drawings of an embodiment of a buffer having an opening between a second insulator and an upper lid, the opening being fitted to a drum-shaped projection of the first insulator. FIG. (B) is a front sectional view.
【図４】図４は上蓋に緩衝物を介して碍子形端子を取付
けた一実施例の一部断面図である。FIG. 4 is a partial cross-sectional view of one embodiment in which an insulator terminal is attached to an upper lid via a buffer.
【図５】図５は密閉形電気機器用容器に液体を供給する
試験装置の正面図である。FIG. 5 is a front view of a test apparatus for supplying a liquid to a container for a closed electric device.
【図６】図６は従来の密閉形電気機器用容器の上蓋に碍
子形端子を取付けた一実施例の一部断面図である。FIG. 6 is a partial cross-sectional view of one embodiment in which an insulator terminal is attached to the upper lid of a conventional sealed electric equipment container.
【図７】図７は従来の上蓋の碍子形端子取付部の一実施
例の図面で、（ａ）は平面図、（ｂ）は正断面図であ
る。FIGS. 7A and 7B are drawings of one embodiment of a conventional insulator-type terminal mounting portion of the upper lid, wherein FIG. 7A is a plan view and FIG. 7B is a front sectional view.
【図８】図８は碍子形端子に用いられる第１碍子の図面
で、（ａ）は平面図および上部からの斜視図、（ｂ）は
一部正断面図、（ｃ）は底面図および底部からの斜視図
である。FIGS. 8A and 8B are drawings of a first insulator used for an insulator type terminal, wherein FIG. 8A is a plan view and a perspective view from above, FIG. 8B is a partial front sectional view, FIG. It is a perspective view from the bottom.
【図９】図９は碍子形端子に用いられる第２碍子の図面
で、（ａ）は平面図、（ｂ）は正断面図、（ｃ）は一部
切断部分の上部からの斜視図である。FIGS. 9A and 9B are drawings of a second insulator used for the insulator type terminal, wherein FIG. 9A is a plan view, FIG. 9B is a front sectional view, and FIG. is there.
１ 第１碍子 ２ 台座部 ２ａ 多角形状の凹部 ２ｂ 段差部 ２ｃ 平面部 ３ 挿入部 ３ａ 太鼓状の凸部 ３ｂ 平面部 ４ 端子貫通孔 ５ ボルト端子 ６ 多角形状鍔部 ７ 第２碍子 ８ 第１パッキング ９ 第２パッキング １０ 密閉形電気機器用容器 １０ａ 上蓋 １０ｂ 電気機器収納部 １１ 開口部 １２ 環状段差部 １３ 同心円状の環状突起 １４ 緩衝物 １５ 開口部 １６ 凹部 １６ａ 環状段差部 １７ 端子貫通孔 １８ 溝 １９ ワッシャ ２０ スプリングワッシャ ２１ ナット ２２ 上蓋 ２３ 開口部 ２４ 環状段差部 ２５ 液体注入口 ２６ 圧力センサ ２７ ポンプ DESCRIPTION OF SYMBOLS 1 1st insulator 2 pedestal part 2a Polygonal concave part 2b Step part 2c Flat part 3 Insertion part 3a Drum-shaped convex part 3b Flat part 4 Terminal through hole 5 Bolt terminal 6 Polygonal flange part 7 Second insulator 8 1st packing 8 Reference Signs List 9 second packing 10 sealed electric device container 10a top lid 10b electric device storage portion 11 opening 12 annular step 13 concentric annular projection 14 buffer 15 opening 16 recess 16a annular step 17 terminal through hole 18 groove 19 Washer 20 Spring washer 21 Nut 22 Top lid 23 Opening 24 Annular step 25 Liquid inlet 26 Pressure sensor 27 Pump
───────────────────────────────────────────────────── フロントページの続き (72)発明者 肥土 久 京都府京都市中京区御池通烏丸東入一筋目 仲保利町191番地の４ 上原ビル３階 ニ チコン株式会社内 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Hisashi Hido Nichicon Co., Ltd., 3rd floor, Uehara Bldg.
Claims (3)
より封止される電気機器収納部（１０ｂ）と、該上蓋
（１０ａ）を介して、多角形状の凹部（２ａ）を台座部
（２）に、また、太鼓状の凸部（３ａ）を挿入部（３）
に設けた第１碍子（１）の該挿入部（３）に第２碍子
（７）の凹部（１６）を嵌合させ、上記台座部（２）の
多角形状の凹部（２ａ）及び上蓋（１０ａ）の開口部
（１１）の環状段差部（１２）に各々パッキング（８、
９）を配置し、ボルト締め固定した碍子形端子とを備え
てなる密閉形電気機器用容器（１０）において、上記上
蓋（１０ａ）の開口部（１１）周縁に同心円状の環状突
起（１３）を設けたことを特徴とする密閉形電気機器用
容器。1. A polygonal concave portion (2a) is formed on a pedestal (10) by way of an upper lid (10a), an electric equipment storage section (10b) sealed by the upper lid (10a), and the upper lid (10a). 2 ) In addition, a drum-shaped convex part (3a) is inserted into the insertion part ( 3 ).
Second recess (16)-fitted in the insulator (7), the base portion (2) recesses polygonal (2a) and the upper lid into the first insertion portion of the insulator (1) (3) provided in the ( Packing (8, 10) is inserted into the annular step (12) of the opening (11) of 10a).
In a closed type electric appliance container ( 10 ) including the above (9) and an insulator-type terminal fixed by bolting, a concentric annular projection (13) is formed on the periphery of the opening (11) of the upper lid (10a). A container for a hermetically sealed electric device, comprising:
２．３ｍｍであることを特徴とする請求項１記載の密閉
形電気機器用容器。2. The thickness of the upper lid (10a) is 0.4 to 0.4.
The hermetically sealed container for electric equipment according to claim 1, wherein the container has a diameter of 2.3 mm.
の間に、第１碍子（１）の挿入用開口部（１５）を有す
る緩衝物（１４）を介在させたことを特徴とする請求項
１または請求項２記載の密閉形電気機器用容器。3. A buffer (14) having an opening (15) for inserting the first insulator ( 1 ) is interposed between the second insulator ( 7 ) and the upper lid (10a). The container for a hermetically sealed electric device according to claim 1 or 2, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09749098A JP4004135B2 (en) | 1998-04-09 | 1998-04-09 | Sealed container for electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09749098A JP4004135B2 (en) | 1998-04-09 | 1998-04-09 | Sealed container for electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11297564A true JPH11297564A (en) | 1999-10-29 |
| JP4004135B2 JP4004135B2 (en) | 2007-11-07 |
Family
ID=14193725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09749098A Expired - Lifetime JP4004135B2 (en) | 1998-04-09 | 1998-04-09 | Sealed container for electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4004135B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006278372A (en) * | 2005-03-28 | 2006-10-12 | Nichicon Corp | Capacitor |
| JP2008010288A (en) * | 2006-06-29 | 2008-01-17 | Shizuki Electric Co Inc | Insulator type terminal of electric equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59119016U (en) * | 1983-02-01 | 1984-08-11 | 株式会社高岳製作所 | oil immersed transformer tank |
| JPS6336026U (en) * | 1986-08-22 | 1988-03-08 | ||
| JPS6344428U (en) * | 1986-09-08 | 1988-03-25 | ||
| JPH01108921U (en) * | 1988-01-13 | 1989-07-24 | ||
| JPH02283009A (en) * | 1988-12-28 | 1990-11-20 | Marcon Electron Co Ltd | Liquid-impregnated enclosed capacitor |
| JPH08161950A (en) * | 1994-11-30 | 1996-06-21 | East Japan Railway Co | Support insulator of wiring bracket |
| JPH1032142A (en) * | 1996-07-16 | 1998-02-03 | Shizuki Denki Seisakusho:Kk | Insulator-type terminal for electric equipment |
-
1998
- 1998-04-09 JP JP09749098A patent/JP4004135B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59119016U (en) * | 1983-02-01 | 1984-08-11 | 株式会社高岳製作所 | oil immersed transformer tank |
| JPS6336026U (en) * | 1986-08-22 | 1988-03-08 | ||
| JPS6344428U (en) * | 1986-09-08 | 1988-03-25 | ||
| JPH01108921U (en) * | 1988-01-13 | 1989-07-24 | ||
| JPH02283009A (en) * | 1988-12-28 | 1990-11-20 | Marcon Electron Co Ltd | Liquid-impregnated enclosed capacitor |
| JPH08161950A (en) * | 1994-11-30 | 1996-06-21 | East Japan Railway Co | Support insulator of wiring bracket |
| JPH1032142A (en) * | 1996-07-16 | 1998-02-03 | Shizuki Denki Seisakusho:Kk | Insulator-type terminal for electric equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006278372A (en) * | 2005-03-28 | 2006-10-12 | Nichicon Corp | Capacitor |
| JP2008010288A (en) * | 2006-06-29 | 2008-01-17 | Shizuki Electric Co Inc | Insulator type terminal of electric equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4004135B2 (en) | 2007-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8207456B2 (en) | Electronic circuit device for compressor | |
| KR100632247B1 (en) | Bushing for transformer | |
| CN101496458A (en) | Method for fixing an electrical or electronic component, in particular a printed circuit board, in a housing and fixing element therefor | |
| AU2012231403A1 (en) | Capacitor assembly | |
| JPH0855734A (en) | Rod insulating tube for transformer | |
| CA2256987C (en) | Terminal seal for electrolytic devices | |
| JPH11297564A (en) | Hermetic receptacle for electric device | |
| US5308925A (en) | Conductive pin assembly for a machine housing | |
| JP4482870B2 (en) | Terminal contact assembly | |
| CA1221752A (en) | Current leadthrough | |
| US2406852A (en) | Conductor grommet assembly | |
| JP2003187660A (en) | Sealed terminal for electronic equipment and its mounting method | |
| KR20210136718A (en) | Installation structure of sensor for detection of gas insulated switchgear | |
| US20230377777A1 (en) | Feed-through and sealing arrangement | |
| GB2282004A (en) | An insulator, e.g. for the terminals of a CRT | |
| CN113853087B (en) | Explosion-proof box | |
| US6471522B2 (en) | Evacuated high voltage connector | |
| JPH11303744A (en) | Hermetic compressor | |
| JP2007250340A (en) | Airtight terminal | |
| KR20220007673A (en) | airtight terminal | |
| CN104094684B (en) | A kind of electronic equipment and its manufacturing method | |
| CN219608135U (en) | Gas meter | |
| JP5292780B2 (en) | Semiconductor device | |
| CN215073463U (en) | Withstand voltage test device for high-voltage switch | |
| JPH0132678Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20041012 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20070326 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070507 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070703 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070817 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070821 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100831 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100831 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110831 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110831 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120831 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120831 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130831 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |