JPH0722069B2 - Capacitor - Google Patents
CapacitorInfo
- Publication number
- JPH0722069B2 JPH0722069B2 JP2088532A JP8853290A JPH0722069B2 JP H0722069 B2 JPH0722069 B2 JP H0722069B2 JP 2088532 A JP2088532 A JP 2088532A JP 8853290 A JP8853290 A JP 8853290A JP H0722069 B2 JPH0722069 B2 JP H0722069B2
- Authority
- JP
- Japan
- Prior art keywords
- sealing piece
- opening
- outer case
- adhesive
- capacitor
- 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 - Lifetime
Links
Landscapes
- Casings For Electric Apparatus (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、筒状で、かつ側部より端子を導出する構成の
コンデンサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacitor having a tubular shape and a terminal from which a terminal is led out.
従来の技術 一般に機器の小形化に伴い、コンデンサも小形化されて
おり、この小形化された筒状のコンデンサにおいては、
端面から端子を導出することがそのスペースの関係から
困難になってきている。このようなことから、第３図に
示すように筒状のコンデンサにおいて、有底の外装ケー
ス11の端部より端子12を導出する構成のものが開発され
てきた。具体的には有底の筒状で合成樹脂製の外装ケー
ス11の外周に軸方向の開口13′を形成し、この開口13′
をこの開口13′にのぞむ外装ケース11の開口縁13に、合
成樹脂製の封止片14を封止片14の裏面に設けた凸部17を
ガイドとして当接して塞ぎ、封止片14を貫通させて端子
12を導出させた構成となっている。そして外装ケース11
の開口13′の開口縁13と、封止片14の当接部を接着剤15
で接着していた。2. Description of the Related Art In general, capacitors have become smaller along with the miniaturization of equipment, and in this miniaturized cylindrical capacitor,
It is becoming difficult to derive the terminal from the end face because of the space. For this reason, as shown in FIG. 3, a cylindrical capacitor having a structure in which the terminal 12 is led out from the end of the bottomed outer case 11 has been developed. Specifically, an axial opening 13 'is formed on the outer periphery of an outer case 11 made of a synthetic resin and having a bottomed cylindrical shape.
A sealing piece 14 made of a synthetic resin is closed and abutted on the opening edge 13 of the outer case 11 through the opening 13 ′ by using a convex portion 17 provided on the back surface of the sealing piece 14 as a guide. Penetrate and terminal
It has a configuration in which 12 is derived. And the outer case 11
The opening edge 13 'of the opening 13' of the
It was glued in.
発明が解決しようとする課題 このような従来のコンデンサにおいては、前記外装ケー
ス11の開口13′にのぞむ開口縁13と、封止片14の当接す
る部分の全域にわたり接着剤15が付着せず、その当接部
に隙間を生じ、外装ケース11にエポキシ樹脂を充填して
コンデンサ素子を外装する際、この隙間より充填用のエ
ポキシ樹脂が漏出するという問題があった。SUMMARY OF THE INVENTION In such a conventional capacitor, the adhesive 15 does not adhere to the opening edge 13 of the outer case 11 and the entire area of the contacting portion of the sealing piece 14. There is a problem in that a gap is created in the contact portion, and when the exterior case 11 is filled with an epoxy resin to package the capacitor element, the filling epoxy resin leaks from the gap.
本発明は前記従来の問題に留意し、側部より端子を導出
するタイプのコンデンサにおいて、その封止片と外装ケ
ースの接着を確実にすることを目的とするものである。The present invention has been made in consideration of the above-mentioned conventional problems, and an object of the present invention is to ensure the adhesion between the sealing piece and the outer case in a capacitor of the type in which terminals are led out from the side.
課題を解決するための手段 この課題を解決するため本発明は、外装ケースの周縁に
軸方向の開口を形成し、その開口縁と封止片のいずれか
一方にその当接部に沿った凹部を形成し、封止片に前記
凹部に対応した接着剤注入孔を設け、この接着剤注入孔
より前記凹部に接着剤を注入して外装ケースと封止片を
接着するもので、さらに好ましくは、使用するシアノア
クリレート系よりなる接着剤の粘度を常温で10cPs以下
とするものである。Means for Solving the Problem In order to solve the problem, the present invention provides a recess formed along an abutting portion in which one of an opening edge and a sealing piece is formed by forming an opening in an outer peripheral edge of the outer casing. And forming an adhesive injection hole corresponding to the recess in the sealing piece, and injecting an adhesive from the adhesive injection hole into the recess to bond the outer case and the sealing piece, and more preferably The viscosity of the cyanoacrylate adhesive used is 10 cPs or less at room temperature.
作用 この構成により、合成樹脂ケースと封止片相互間の隙間
を接着剤により完全に塞ぎ、面接合状態とすることとな
る。Function With this configuration, the gap between the synthetic resin case and the sealing piece is completely closed by the adhesive, and the surface-bonded state is achieved.
実施例 以下本発明のコンデンサの一実施例について図面を参照
して説明する。第１図，第２図において、有底の筒状
で、かつ外周に軸方向の開口３′と、この開口３′にの
ぞむ開口縁３を有する合成樹脂製の外装ケース１と、前
記外装ケース１の開口３′を塞ぐ合成樹脂製の封止片４
と、この封止片４を貫通して導出された端子２を備えて
いる。外装ケース１の開口縁３と封止片４のいずれか一
方にその当接部に沿った凹部６を形成し、封止片４にこ
の凹部６に対応した接着剤注入孔７と外装ケースの開口
３′に封止片４をガイドするための凸部８を設けてい
る。Embodiment An embodiment of the capacitor of the present invention will be described below with reference to the drawings. 1 and 2, an outer case 1 made of synthetic resin, which has a cylindrical shape with a bottom and has an axial opening 3'on its outer periphery and an opening edge 3 looking into the opening 3 ', and the outer case. Synthetic resin sealing piece 4 for closing the opening 3'of 1
And the terminal 2 led out through the sealing piece 4. A concave portion 6 is formed along one of the opening edge 3 and the sealing piece 4 of the outer case 1 along the abutting portion thereof, and the sealing piece 4 has an adhesive injection hole 7 corresponding to the concave portion 6 and the outer case. A projection 8 for guiding the sealing piece 4 is provided in the opening 3 '.
次に外装ケース１の開口縁３に、封止片４を接着する方
法について説明する。封止片４の凸部８を外装ケース１
の開口３′に嵌合し、外装ケース１の開口縁３に封止片
４の凹部６を有する面を当接し、接着剤注入孔７からシ
アノアクリレート系の接着剤５を、凹部６および封止片
４と外装ケース１の当接部の隙間が埋まるように、適当
量注入して接着する。シアノアクリレート系の接着剤で
あれば、常温で10cPs以下の粘度であれば特に加圧せず
に注入しても前記当接部の隙間に完全に接着剤５を充填
できる。第１表に従来例の外装ケースと本実施例の外装
ケースにエポキシ樹脂を真空注型してコンデンサ素子を
外装して形成したコンデンサのエポキシ樹脂漏れ率を示
す。Next, a method of adhering the sealing piece 4 to the opening edge 3 of the outer case 1 will be described. The convex portion 8 of the sealing piece 4 is attached to the outer case 1
Of the sealing piece 4 is brought into contact with the opening edge 3 of the outer case 1, and the surface of the sealing piece 4 having the recess 6 is brought into contact with the recess 6 and the cyanoacrylate adhesive 5 from the adhesive injection hole 7. An appropriate amount is injected and bonded so that the gap between the contact portion between the stopper 4 and the outer case 1 is filled. With a cyanoacrylate adhesive, if the viscosity is 10 cPs or less at room temperature, the adhesive 5 can be completely filled in the gap between the contact portions even if it is injected without applying pressure. Table 1 shows the epoxy resin leakage rate of capacitors formed by vacuum-casting an epoxy resin on the exterior case of the conventional example and the exterior case of the present example to enclose the capacitor element.
以上のように、注型用のエポシキ樹脂より低い粘度のシ
アノアクリレート系接着剤が、封止片４の凹部６および
外装ケース１の開口縁３と封止片４の当接部の隙間に完
全に充填されているため、エポキシ樹脂漏れは全く発生
しない。 As described above, the cyanoacrylate adhesive having a lower viscosity than the casting epoxy resin is completely filled in the recess 6 of the sealing piece 4 and the gap between the opening edge 3 of the outer case 1 and the abutting portion of the sealing piece 4. Since it is filled in, no epoxy resin leakage occurs.
発明の効果 以上の実施例の説明で明らかなように、本発明のコンデ
ンサは、樹脂ケースの外周に軸方向の開口を形成し、そ
の開口縁と封止片を接着剤により接着するものであっ
て、開口縁と封止片の接合部のいずれか一方に、接合部
に沿った凹部を設け、封止片に設けた注入孔より接着剤
を注入して接着するようにしたため、注型用樹脂の漏れ
を完全になくし、工程のトラブルおよび、コンデンサの
外観不良を低減することができるという効果が得られ
る。EFFECTS OF THE INVENTION As is apparent from the above description of the embodiments, the capacitor of the present invention is such that an opening in the axial direction is formed on the outer periphery of the resin case and the opening edge and the sealing piece are bonded with an adhesive. As a result, a concave part along the joint is provided on either the opening edge or the joint of the sealing piece, and the adhesive is injected from the injection hole provided in the sealing piece to bond it. The effect of completely eliminating resin leakage and reducing process troubles and appearance defects of capacitors can be obtained.
第１図（Ａ）は本発明の一実施例のコンデンサの外装ケ
ースの正面図、第１図（Ｂ）は同第１図（Ａ）のＡ−
Ａ′断面図、第２図（Ａ）は同封止片の正面図、第２図
（Ｂ）は同第２図（Ａ）のＡ−Ａ′断面図、第３図
（Ａ）は従来のコンデンサの外装ケースの正面図、第３
図（Ｂ）は同第３図（Ａ）のＡ−Ａ′断面図である。 １……外装ケース、２……端子、３……外装ケースの開
口縁、３′……外装ケースの開口、４……封止片、５…
…接着剤、６……凹部、７……接着剤の注入孔。FIG. 1 (A) is a front view of an outer case of a capacitor according to an embodiment of the present invention, and FIG. 1 (B) is A- of FIG. 1 (A).
FIG. 2A is a front view of the sealing piece, FIG. 2B is a sectional view taken along the line AA ′ of FIG. 2A, and FIG. Front view of external case of capacitor, No. 3
FIG. 3B is a sectional view taken along the line AA ′ of FIG. 1 ... Exterior case, 2 ... Terminal, 3 ... Opening edge of exterior case, 3 '... Opening of exterior case, 4 ... Sealing piece, 5 ...
… Adhesive, 6 …… Recess, 7 …… Adhesive injection hole.
Claims (2)
周に軸方向の開口をもつ合成樹脂製の外装ケースと、両
端部が前記開口の縁に面接合し、前記外装ケースの前記
開口を塞ぐ合成樹脂製の封止片と、前記封止片を貫通し
て導出された端子を備え、前記外装ケースの開口縁と前
記封止片のいずれか一方にその接合部に沿った凹部を形
成し、前記封止片に前記凹部に対応した接着剤注入孔を
設け、前記接着剤注入孔より前記凹部に接着剤を注入し
て前記外装ケースと前記封止片を接着してなるコンデン
サ。1. A capacitor element, an outer case made of synthetic resin, which has a cylindrical shape with a bottom and has an opening in the outer periphery in the axial direction, and both ends are surface-bonded to the edge of the opening. A synthetic resin sealing piece that closes the opening, and a terminal that extends through the sealing piece, and a recess along the joint of the opening edge of the outer case and the sealing piece. A capacitor formed by forming an adhesive injection hole corresponding to the recess in the sealing piece, and injecting an adhesive from the adhesive injection hole into the recess to bond the outer case and the sealing piece. .
常温で粘度が10cPs以下である請求項１記載のコンデン
サ。2. The adhesive is made of cyanoacrylate.
The capacitor according to claim 1, which has a viscosity of 10 cPs or less at room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2088532A JPH0722069B2 (en) | 1990-04-03 | 1990-04-03 | Capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2088532A JPH0722069B2 (en) | 1990-04-03 | 1990-04-03 | Capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03286513A JPH03286513A (en) | 1991-12-17 |
| JPH0722069B2 true JPH0722069B2 (en) | 1995-03-08 |
Family
ID=13945453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2088532A Expired - Lifetime JPH0722069B2 (en) | 1990-04-03 | 1990-04-03 | Capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722069B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012253095A (en) * | 2011-05-31 | 2012-12-20 | Toshiba Corp | High-voltage capacitor |
-
1990
- 1990-04-03 JP JP2088532A patent/JPH0722069B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03286513A (en) | 1991-12-17 |
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