JPS6138176Y2 - - Google Patents
Info
- Publication number
- JPS6138176Y2 JPS6138176Y2 JP1981131208U JP13120881U JPS6138176Y2 JP S6138176 Y2 JPS6138176 Y2 JP S6138176Y2 JP 1981131208 U JP1981131208 U JP 1981131208U JP 13120881 U JP13120881 U JP 13120881U JP S6138176 Y2 JPS6138176 Y2 JP S6138176Y2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- sealing plate
- resin coating
- hard insulating
- plate
- 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
- 238000007789 sealing Methods 0.000 claims description 40
- 239000000057 synthetic resin Substances 0.000 claims description 40
- 229920003002 synthetic resin Polymers 0.000 claims description 40
- 239000011248 coating agent Substances 0.000 claims description 26
- 238000000576 coating method Methods 0.000 claims description 26
- 239000003990 capacitor Substances 0.000 claims description 15
- 239000012212 insulator Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000011247 coating layer Substances 0.000 claims description 9
- 239000003792 electrolyte Substances 0.000 description 13
- 150000002500 ions Chemical class 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Paints Or Removers (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、電解コンデンサの封口板に係り、
特に、電解液との接触に伴う腐食を防止した封口
板に関する。[Detailed explanation of the invention] [Field of industrial application] This invention relates to a sealing plate for an electrolytic capacitor.
In particular, the present invention relates to a sealing plate that prevents corrosion due to contact with an electrolytic solution.
フエノール樹脂板等の硬質絶縁板の表面にゴム
等の弾性絶縁体を貼着して構成される封口板で
は、電解コンデンサ素子に含浸されている電解液
によつて硬質絶縁板から有害なイオンが抽出さ
れ、これを放置した場合、電解コンデンサに腐食
や電解液の劣化を生じさせる。
In a sealing plate constructed by pasting an elastic insulator such as rubber on the surface of a hard insulating plate such as a phenol resin plate, harmful ions are removed from the hard insulating plate by the electrolyte impregnated in the electrolytic capacitor element. If extracted and left untreated, it will cause corrosion in electrolytic capacitors and deterioration of the electrolyte.
このような電解液との接触による封口板からの
有害イオンの抽出を防止するため、従来、外装ケ
ースの内部に臨ませる硬質絶縁板の表面に合成樹
脂コーテイングを行つて構成した三層構造の封口
板が用いられている。 In order to prevent the extraction of harmful ions from the sealing plate due to contact with such electrolyte, conventionally a three-layer sealing structure was constructed by coating the surface of a hard insulating plate facing the inside of the exterior case with a synthetic resin. board is used.
このような封口板では、合成樹脂コーテイング
を硬質絶縁素材に予め熱加工処理によつて形成
し、そのコーテイング後に打抜き加工を行つて所
定形状に成形している。このため、硬質絶縁板の
表面部は、弾性絶縁体又は合成樹脂コーテイング
で被われるが、その周面部には硬質絶縁板が露出
している。この露出部分は、外装ケースの内壁部
に密着するが、その密着部分に電解液が侵入する
と、腐食発生等の原因に成る有害物質が抽出され
るおそれがある。また、打抜き加工の際、封口板
の縁部では、合成樹脂コーテイングが剥離して、
この部分が電解液と接触するおそれもある。
In such a sealing plate, a synthetic resin coating is previously formed on a hard insulating material by heat processing, and after the coating, a punching process is performed to form a predetermined shape. For this reason, the surface portion of the hard insulating plate is covered with an elastic insulator or synthetic resin coating, but the hard insulating plate is exposed on the peripheral surface thereof. This exposed portion is in close contact with the inner wall of the outer case, but if the electrolyte enters this close contact portion, there is a risk that harmful substances that may cause corrosion or the like may be extracted. Additionally, during the punching process, the synthetic resin coating peels off at the edges of the sealing plate.
There is also a risk that this part may come into contact with the electrolyte.
そこで、この考案は、硬質絶縁板が露出してい
る部分に耐腐食性のある合成樹脂被覆を形成し、
硬質絶縁板からの有害イオンの抽出を防止した電
解コンデンサの封口板の提供を目的とする。 Therefore, this idea forms a corrosion-resistant synthetic resin coating on the exposed part of the hard insulating board,
The purpose of the present invention is to provide a sealing plate for an electrolytic capacitor that prevents the extraction of harmful ions from a hard insulating plate.
この考案の電解コンデンサの封口板２は、硬質
絶縁板４の一面に弾性絶縁体６、他面に合成樹脂
コーテイング層８を形成して成る封口板２の周面
部に、円筒形の合成樹脂被覆１０を被せて密着さ
せるとともに、その縁部で封口板の弾性絶縁体６
及び合成樹脂コーテイング層８の周縁部を覆つた
ものである。
The sealing plate 2 of the electrolytic capacitor of this invention is formed by forming an elastic insulator 6 on one side of a hard insulating plate 4 and a synthetic resin coating layer 8 on the other side, and a cylindrical synthetic resin coating on the peripheral surface of the sealing plate 2. 10 and tightly fit it, and the elastic insulator 6 of the sealing plate is attached at the edge thereof.
and covers the peripheral edge of the synthetic resin coating layer 8.
このように構成すると、硬質絶縁板４の周面部
及びその縁部が合成樹脂被覆１０で確実に被われ
るので、硬質絶縁板４が電解液に触れることがな
く、硬質絶縁板４からの有害イオンが電解液に流
出するのを防止することができる。
With this configuration, the peripheral surface and edges of the hard insulating board 4 are reliably covered with the synthetic resin coating 10, so that the hard insulating board 4 does not come into contact with the electrolyte, and harmful ions from the hard insulating board 4 are prevented from coming into contact with the electrolyte. can be prevented from flowing into the electrolyte.
この考案の電解コンデンサの封口板において、
合成樹脂被覆１０を加熱収縮性合成樹脂チユーブ
で構成すれば、極めて容易に封口板２の周囲面を
覆うことができる。 In the sealing plate of the electrolytic capacitor of this invention,
If the synthetic resin coating 10 is composed of a heat-shrinkable synthetic resin tube, the peripheral surface of the sealing plate 2 can be covered very easily.
以下、この考案の実施例を図面を参照して説明
する。
Hereinafter, embodiments of this invention will be described with reference to the drawings.
第１図は、この考案の電解コンデンサの封口板
の実施例を示す。 FIG. 1 shows an embodiment of the sealing plate for an electrolytic capacitor of this invention.
第１図において、この封口板２は、フエノール
樹脂板等の硬質絶縁板４の一方の表面にゴム等の
弾性絶縁体６、他方の表面にポリプロピレン等の
合成樹脂コーテイング層８を設置するとともに、
硬質絶縁板４及び弾性絶縁体６の周面及びの表面
の一部に断面コ字状の合成樹脂被覆１０を被嵌し
て構成されている。合成樹脂被覆１０は、ポリプ
ロピレン等の加熱収縮性合成樹脂チユーブで形成
されている。 In FIG. 1, this sealing plate 2 has an elastic insulator 6 such as rubber on one surface of a hard insulating plate 4 such as a phenol resin plate, and a synthetic resin coating layer 8 such as polypropylene on the other surface.
A synthetic resin coating 10 having a U-shaped cross section is fitted onto a portion of the peripheral surface and surface of the hard insulating plate 4 and the elastic insulating member 6. The synthetic resin coating 10 is formed of a heat-shrinkable synthetic resin tube such as polypropylene.
封口板２は、第２図に示すように、一面に弾性
絶縁体６、他面に合成樹脂コーテイング層８が設
置された硬質絶縁板４に対して、円筒状の合成樹
脂被覆１０を被せて密着させるものである。第２
図は、合成樹脂被覆１０の加熱処理前の状態を示
す。 As shown in FIG. 2, the sealing plate 2 is made by covering a hard insulating plate 4 with an elastic insulator 6 on one side and a synthetic resin coating layer 8 on the other side with a cylindrical synthetic resin coating 10. It is meant to be in close contact with each other. Second
The figure shows the state of the synthetic resin coating 10 before heat treatment.
そして、この合成樹脂被覆１０は、第３図に示
すように、封口板２の外周に被嵌し、この状態で
加熱することにより、合成樹脂被覆１０を収縮さ
せて第１図に示す封口板２を形成することができ
る。 Then, as shown in FIG. 3, this synthetic resin coating 10 is fitted onto the outer periphery of the sealing plate 2, and by heating in this state, the synthetic resin coating 10 is shrunk and the sealing plate shown in FIG. 2 can be formed.
このように合成樹脂被覆１０が施された封口板
２には、端子引出し用の貫通孔１２，１４が形成
されており、この封口板２の表面には、各貫通孔
１２，１４に挿入され、かつ固定ワツシヤ１６で
封口板２に固定されるリベツト１８によつて陽極
側及び陰極側の外部接続用端子２０，２２が固定
されている。 The sealing plate 2 coated with the synthetic resin coating 10 is formed with through holes 12 and 14 for pulling out terminals, and the surface of the sealing plate 2 has terminals inserted into the through holes 12 and 14. , and external connection terminals 20 and 22 on the anode side and the cathode side are fixed by rivets 18 which are fixed to the sealing plate 2 with fixing washers 16.
したがつて、封口板２は、第４図に示すよう
に、外装ケース２４の開口部に取付けられて外装
ケース２４を封口する。この場合、封口板２は、
外装ケース２４の開口部近傍に形成された段部２
６と、巻締めによつて外装ケース２４の内方に湾
曲形成させた外装ケース２４の開口端部２８とに
よつて外装ケース２４の開口部に固定される。そ
して、封口板２の外周部及び縁部は合成樹脂被覆
１０で被われ、外装ケース２４の内壁には合成樹
脂被覆１０で被われた封口板２の周面部が当接さ
れている。従つて、外装ケース２４の密封ととも
に、封口板２の硬質絶縁板４は、外装ケース２４
の内部における電解液から遮断されている。 Therefore, the sealing plate 2 is attached to the opening of the outer case 24 to seal the outer case 24, as shown in FIG. In this case, the sealing plate 2 is
Stepped portion 2 formed near the opening of the exterior case 24
6 and the open end 28 of the outer case 24, which is curved inwardly by tightening, to the opening of the outer case 24. The outer periphery and edge of the sealing plate 2 are covered with a synthetic resin coating 10, and the peripheral surface of the sealing plate 2 covered with the synthetic resin coating 10 is brought into contact with the inner wall of the outer case 24. Therefore, in addition to sealing the outer case 24, the hard insulating plate 4 of the sealing plate 2 also seals the outer case 24.
is isolated from the electrolyte inside.
そして、電解コンデンサ素子３０の上端面より
引き出された陽極側又は陰極側のタブ３２，３４
は封口板２の内面側に突出させたリベツト１８を
加締めることにより固定ワツシヤ１６の上に固定
されている。また、外装ケース２４の底面には断
面Ｖ字状の切溝を十字形に形成した防爆弁３６が
設けられている。 Then, the tabs 32 and 34 on the anode side or the cathode side are pulled out from the upper end surface of the electrolytic capacitor element 30.
is fixed onto the fixed washer 16 by crimping a rivet 18 protruding from the inner surface of the sealing plate 2. Furthermore, an explosion-proof valve 36 is provided on the bottom surface of the exterior case 24, and has a cross-shaped cut groove having a V-shaped cross section.
以上説明したように、封口板２の硬質絶縁板４
は、合成樹脂コーテイング層８及び合成樹脂被覆
１０によつて電解液から遮断されるので、硬質絶
縁板４からの有害イオンの抽出が確実に防止され
るため、電解コンデンサ素子３０の耐腐食性の向
上とともに電解液の劣化が防止できる。特に、合
成樹脂被覆１０をポリプロピレン（PP）で形成
した加熱収縮性合成樹脂チユーブによつて構成し
た場合、加熱処理で容易に第１図に示す形態を得
ることができ、信頼性の高い電解コンデンサを形
成することができる。加熱収縮性合成樹脂チユー
ブは安価であるため、信頼性の高い封口板を安価
に構成することができる。 As explained above, the hard insulating plate 4 of the sealing plate 2
is shielded from the electrolyte by the synthetic resin coating layer 8 and the synthetic resin coating 10, thereby reliably preventing the extraction of harmful ions from the hard insulating plate 4, thereby improving the corrosion resistance of the electrolytic capacitor element 30. Along with this improvement, deterioration of the electrolyte can be prevented. In particular, when the synthetic resin coating 10 is constructed from a heat-shrinkable synthetic resin tube made of polypropylene (PP), the form shown in Figure 1 can be easily obtained by heat treatment, resulting in a highly reliable electrolytic capacitor. can be formed. Since the heat-shrinkable synthetic resin tube is inexpensive, a highly reliable sealing plate can be constructed at low cost.
なお、合成樹脂被覆１０には、加熱収縮性合成
樹脂チユーブの他に、アルミニウムと化合物を作
り易い有害イオンを含まない他の高分子材料から
なる加熱収縮チユーブを用いることができる。 In addition to the heat-shrinkable synthetic resin tube, the synthetic resin coating 10 may be a heat-shrinkable tube made of another polymeric material that does not contain harmful ions that easily form compounds with aluminum.
以上説明したように、この考案によれば、硬質
絶縁板の一面に弾性絶縁体、他面に合成樹脂コー
テイング層を形成した封口板の周面部及びその縁
部を合成樹脂被覆で被つたので、硬質絶縁板を電
解液から確実に遮断することができ、電解液の作
用で硬質絶縁板から有害イオンが抽出されるのを
未然に防止でき、耐腐食性の向上で信頼性が高い
安定した電気的特性を維持することができる。
As explained above, according to this invention, the peripheral surface and the edges of the sealing plate, which has an elastic insulator formed on one side of the hard insulating plate and a synthetic resin coating layer formed on the other side, are covered with a synthetic resin coating. The hard insulating board can be reliably isolated from the electrolyte, preventing harmful ions from being extracted from the hard insulating board due to the action of the electrolyte, and providing highly reliable and stable electricity with improved corrosion resistance. characteristics can be maintained.
第１図はこの考案の電解コンデンサの封口板の
実施例を示す断面図、第２図はその封口板の分解
斜視図、第３図は合成樹脂被覆を収縮させる前の
封口板を示す断面図、第４図はこの考案の電解コ
ンデンサの封口板を使用した電解コンデンサの断
面図である。
２……封口板、４……硬質絶縁板、６……弾性
絶縁体、８……合成樹脂コーテイング層、１０…
…合成樹脂被覆。
Figure 1 is a sectional view showing an embodiment of the sealing plate for an electrolytic capacitor of this invention, Figure 2 is an exploded perspective view of the sealing plate, and Figure 3 is a sectional view showing the sealing plate before the synthetic resin coating is shrunk. 4 is a sectional view of an electrolytic capacitor using the electrolytic capacitor sealing plate of this invention. 2... Sealing plate, 4... Hard insulating plate, 6... Elastic insulator, 8... Synthetic resin coating layer, 10...
...Synthetic resin coating.
Claims (1)
樹脂コーテイング層を形成して成る封口板の周
面部に、円筒形の合成樹脂被覆を被せて密着さ
せるとともに、その縁部で封口板の弾性絶縁体
及び合成樹脂コーテイング層の周縁部を覆つた
ことを特徴とする電解コンデンサの封口板。 (2) 前記合成樹脂被覆は、加熱収縮性合成樹脂チ
ユーブで構成したことを特徴とする実用新案登
録請求の範囲第１項に記載の電解コンデンサの
封口板。[Scope of Claim for Utility Model Registration] (1) A cylindrical synthetic resin coating is placed on the peripheral surface of a sealing plate consisting of a hard insulating plate with an elastic insulator on one side and a synthetic resin coating layer on the other side. What is claimed is: 1. A sealing plate for an electrolytic capacitor, characterized in that the edge thereof covers the peripheral edge of the elastic insulator and synthetic resin coating layer of the sealing plate. (2) The sealing plate for an electrolytic capacitor according to claim 1, wherein the synthetic resin coating is made of a heat-shrinkable synthetic resin tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13120881U JPS5837133U (en) | 1981-09-03 | 1981-09-03 | Sealing plate for electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13120881U JPS5837133U (en) | 1981-09-03 | 1981-09-03 | Sealing plate for electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5837133U JPS5837133U (en) | 1983-03-10 |
| JPS6138176Y2 true JPS6138176Y2 (en) | 1986-11-05 |
Family
ID=29924799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13120881U Granted JPS5837133U (en) | 1981-09-03 | 1981-09-03 | Sealing plate for electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5837133U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7165903B2 (en) * | 2018-02-09 | 2022-11-07 | パナソニックＩｐマネジメント株式会社 | Electrolytic capacitor and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910751Y2 (en) * | 1978-09-30 | 1984-04-04 | 日本ケミコン株式会社 | Sealing structure of electrolytic capacitor |
-
1981
- 1981-09-03 JP JP13120881U patent/JPS5837133U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5837133U (en) | 1983-03-10 |
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