JPH0377308A - Electrolytic capacitor - Google Patents
Electrolytic capacitorInfo
- Publication number
- JPH0377308A JPH0377308A JP21391689A JP21391689A JPH0377308A JP H0377308 A JPH0377308 A JP H0377308A JP 21391689 A JP21391689 A JP 21391689A JP 21391689 A JP21391689 A JP 21391689A JP H0377308 A JPH0377308 A JP H0377308A
- Authority
- JP
- Japan
- Prior art keywords
- sealing body
- elastic sealing
- metal case
- peripheral part
- side peripheral
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 6
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 238000000605 extraction Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はアルミニウム、タンタルなどの電解コンデンサ
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to electrolytic capacitors made of aluminum, tantalum, etc.
従来の技術
従来の電解コンデンサは、第３図のようにコンデンサ素
子１より導出した引出リード２ａ、２ｂをＥＰＴ、ＩＩ
Ｒなどのゴムからなる弾性封口体３に設けたリード穴を
貫通させて、アルミニウムなどの円筒状金属ケース４に
収納し、上記弾性封口体３の外面側周沿部と中央周沿部
とを円筒状金属ケース４と共に締付け、第３図の矢印の
方向に弾性封口体の反発弾性により気密保持するよう構
成されていた。2. Description of the Related Art In a conventional electrolytic capacitor, lead leads 2a and 2b led out from a capacitor element 1 are connected to EPT, II as shown in FIG.
A lead hole provided in an elastic sealing body 3 made of rubber such as R is passed through and housed in a cylindrical metal case 4 made of aluminum or the like, and the outer circumferential portion and the central circumferential portion of the elastic sealing body 3 are separated. It was configured to be tightened together with the cylindrical metal case 4 and maintained airtight by the rebound resilience of the elastic sealing body in the direction of the arrow in FIG.
発明が解決しようとする問題点
電解コンデンサの封印部の気密性は、電解コンデンサの
寿命に大きな影響を与える。Problems to be Solved by the Invention The airtightness of the sealing portion of an electrolytic capacitor has a great effect on the life of the electrolytic capacitor.
封口部に使用される弾性封口体は高温に長時間さらされ
ると熱劣化に伴う弾性劣化が起こることにより、上述の
従来の電解コンデンサのように弾性封口体の外面側周沿
部と中央周沿部とを円筒状金属ケースと共に締付けた製
品は、弾性封口体の反発弾性が失われ気密を保つ効果が
薄れる欠点を有していた。そのため、電解コンデンサを
高温中で通電すると電解液が漏出したりして静電容量が
減少するといった問題があった。When the elastic sealing body used for the sealing part is exposed to high temperatures for a long time, its elasticity deteriorates due to thermal deterioration. Products in which the elastic seal is tightened together with a cylindrical metal case have the disadvantage that the elastic seal loses its repulsion resiliency and is less effective at maintaining airtightness. Therefore, when an electrolytic capacitor is energized at a high temperature, the electrolyte leaks out, resulting in a decrease in capacitance.
問題点を解決するための手段
本発明は、上述の問題を解決するため、弾性封臼体を体
積圧縮により気密保持した電解コンデンサである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an electrolytic capacitor in which an elastic sealing body is kept airtight by volume compression.
すなわち、コンデンサ素子より導出した引出リードを円
柱状弾性封口体に設けたリード穴を貫通させ、円筒状金
属ケースに収納し、上記弾性封印体の外面側周沿部と内
面側周沿部とを円筒状金属ケースと共に該封口体の内面
側端面から締付けの中心値までの距離Ｌ２が封口体厚み
Ｌｌの１７３以下になるよう締付け、上記弾性封口体の
体積圧縮により気密保持したことを特徴とする電解コン
デンサである。That is, the lead lead drawn out from the capacitor element is passed through a lead hole provided in a cylindrical elastic sealing body, and is housed in a cylindrical metal case, and the outer circumferential portion and the inner circumferential portion of the elastic sealing body are separated. The sealing body is tightened together with the cylindrical metal case so that the distance L2 from the inner surface of the sealing body to the center point of tightening is equal to or less than 173 of the thickness Ll of the sealing body, and airtightness is maintained by volume compression of the elastic sealing body. It is an electrolytic capacitor.
作用
本発明の電解コンデンサは、弾性封口体の外面側周沿部
と内面側周沿部とを金属ケースと共に締付は密封されて
いるため、弾性封口体の外周面から該弾性封印体の中心
部の方向に体積圧縮される。Function: In the electrolytic capacitor of the present invention, the outer and inner circumferential portions of the elastic sealing body are tightly sealed together with the metal case. The volume is compressed in the direction of .
そのため、弾性封口体の熱劣化が生じても弾性封口体を
貫通した引出リードと弾性体の接触部の気密性が著しく
向上する作用を有する。Therefore, even if the elastic sealing body undergoes thermal deterioration, the airtightness of the contact portion between the elastic body and the lead-out lead passing through the elastic sealing body is significantly improved.
実施例
以下、本発明を第１図および第２図に示す実施例により
説明する。EXAMPLES Hereinafter, the present invention will be explained with reference to examples shown in FIGS. 1 and 2.
第１図はアルミニウム電解コンデンサの断面図で、コン
デンサ素子１より導出した引出リード２ａ、２ｂはＥＰ
Ｔ、ＩＩＲなどのゴムからなる弾性封口体３に設けたリ
ード穴を貫通させてアルミニウム製円筒状金鷹り゛−ス
４に収納し、上記弾性封口体３の外面側周沿部３ａと内
面側周沿部３ｂとを円筒状金属ケース４と共に締付け、
上記弾性封口体３は第１図矢印で示す方向に体積圧縮に
より気密保持したものである。Figure 1 is a cross-sectional view of an aluminum electrolytic capacitor, and the lead leads 2a and 2b led out from the capacitor element 1 are
A lead hole provided in an elastic sealing body 3 made of rubber such as T or IIR is passed through and housed in an aluminum cylindrical case 4, and the outer circumference 3a and inner side of the elastic sealing body 3 are Tighten the peripheral portion 3b together with the cylindrical metal case 4,
The elastic sealing body 3 is kept airtight by volume compression in the direction indicated by the arrow in FIG.
第２図は、上述の実施例に基づいて、定格２５Ｖ、３３
０ ｐ Ｆ 、製品寸法凛径８１１１１１％高さ２０ｍ
＋ｍのアルミニウム電解コンデンサを製作し、また第３
図に示す従来構造で上述と同じ定格および製品寸法で製
作した従来品と共に罰０５℃における高温負荷試験を実
施し比較したものである。従来品においては試験時間が
２０００時間を超えると弾性封口体の熱劣化に伴い気密
が緩み、次第に静電容ｌの減少が大きくなる。Figure 2 shows a rated 25V, 33V, based on the above embodiment.
0 p F, Product Dimensions Rin Diameter 811111% Height 20m
+m aluminum electrolytic capacitor was manufactured, and the third
A high-temperature load test at 05° C. was conducted and compared with a conventional product manufactured with the conventional structure shown in the figure and the same ratings and product dimensions as mentioned above. In conventional products, when the test time exceeds 2000 hours, the airtightness becomes loose due to thermal deterioration of the elastic sealing body, and the capacitance l gradually decreases.
しかし、本発明の電解コンデンサは試験時間が５０００
時間を超えても静電容量変化は少なく、良好な特性を維
持し、信頼性が高いことが実証された。However, the electrolytic capacitor of the present invention requires a test time of 5000
It has been demonstrated that the capacitance changes little over time, maintains good characteristics, and is highly reliable.
なお、上述の実施例において弾性封口体３の内面側周沿
部３ｂを締付ける位置は、第１図に示すＬｌ （弾性
封口体３における内面側端面から締め付けの中心値まで
の距１１１１）がＬｌ （弾性封口体３の厚み）の１
７３以下の位置になることが望ましい。In addition, in the above-mentioned embodiment, the position at which the inner circumferential portion 3b of the elastic sealing body 3 is tightened is Ll (distance 1111 from the inner side end surface of the elastic sealing body 3 to the center value of tightening) shown in FIG. (Thickness of elastic sealing body 3) 1
It is desirable that the position be 73 or below.
また、弾性封口体３はＩＩＲまたはＥＦＴなどの単一の
材料に限定するものではなく、一端面にテフロンシート
を張付けたもの、異種材料を積層したものなど適宜選定
できる。そしてコンデンサ素子においても電解液は耐熱
性の高いもの程望ましいが、固体電解質を有する電解コ
ンデンサにおいても適用でき、本願の要旨を変えるもの
ではない。Further, the elastic sealing body 3 is not limited to a single material such as IIR or EFT, and may be appropriately selected such as one with a Teflon sheet pasted on one end surface or a lamination of different materials. Also in a capacitor element, it is preferable that the electrolytic solution has higher heat resistance, but the present invention can also be applied to an electrolytic capacitor having a solid electrolyte, without changing the gist of the present application.
発明の効果
本発明の電解コンデンサは以上のようにして構成されて
いるので、気密性が著しく向上し、高温負荷試験におけ
る電気的性能が安定し、長獅命高信頼製品が得られ、工
業的ならびに実用的価値の大なるものである。Effects of the Invention Since the electrolytic capacitor of the present invention is constructed as described above, airtightness is significantly improved, electrical performance is stabilized in high temperature load tests, and a highly reliable product is obtained, making it suitable for industrial use. It also has great practical value.
第１図は本発明の電解コンデンサの一実施例の断面図、
第２図は本発明の電解コンデンサと従来の電解コンデン
サを比較した高温負荷試験における容量減少率−時間特
性図、第３図は従来の電解コンデンサの断面図である。
１：コンデンサ素子 ２８％２ｔ）：引出リード３：弾
性封口体 ３ａ＝外面側周沿部FIG. 1 is a sectional view of an embodiment of the electrolytic capacitor of the present invention.
FIG. 2 is a capacitance reduction rate-time characteristic diagram in a high temperature load test comparing the electrolytic capacitor of the present invention and a conventional electrolytic capacitor, and FIG. 3 is a sectional view of the conventional electrolytic capacitor. 1: Capacitor element 28% 2t): Drawer lead 3: Elastic sealing body 3a = outer circumference
Claims (1)
封口体に設けたリード穴を貫通させ、円筒状金属ケース
に収納し、上記弾性封口体の外面側周沿部と内面側周沿
部とを円筒状金属ケースと共に該封口体の内面側端面か
ら締付けの中心値までの距離Ｌ＿２が封口体厚みＬ＿１
の１／３以下になるよう締付け、上記弾性封口体の体積
圧縮により気密保持したことを特徴とする電解コンデン
サ。A lead drawn out from the capacitor element is passed through a lead hole provided in a cylindrical elastic sealing body, and is housed in a cylindrical metal case. The distance L_2 from the inner surface of the sealing body to the center value of tightening together with the metal case is the thickness L_1 of the sealing body.
An electrolytic capacitor characterized in that the electrolytic capacitor is tightened to 1/3 or less of the elastic sealing body and maintained airtight by compressing the volume of the elastic sealing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21391689A JPH0377308A (en) | 1989-08-19 | 1989-08-19 | Electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21391689A JPH0377308A (en) | 1989-08-19 | 1989-08-19 | Electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0377308A true JPH0377308A (en) | 1991-04-02 |
Family
ID=16647163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21391689A Pending JPH0377308A (en) | 1989-08-19 | 1989-08-19 | Electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0377308A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000114118A (en) * | 1998-09-30 | 2000-04-21 | Nippon Chemicon Corp | Solid electrolytic capacitor and its manufacture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6091619A (en) * | 1983-10-25 | 1985-05-23 | 松下電器産業株式会社 | Electrolytic condenser |
| JPS62199849A (en) * | 1986-02-27 | 1987-09-03 | 株式会社豊田自動織機製作所 | Weft yarn storage apparatus in shuttleless loom |
-
1989
- 1989-08-19 JP JP21391689A patent/JPH0377308A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6091619A (en) * | 1983-10-25 | 1985-05-23 | 松下電器産業株式会社 | Electrolytic condenser |
| JPS62199849A (en) * | 1986-02-27 | 1987-09-03 | 株式会社豊田自動織機製作所 | Weft yarn storage apparatus in shuttleless loom |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000114118A (en) * | 1998-09-30 | 2000-04-21 | Nippon Chemicon Corp | Solid electrolytic capacitor and its manufacture |
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