JPH0353485Y2

JPH0353485Y2 -

Info

Publication number: JPH0353485Y2
Application number: JP5098786U
Authority: JP
Priority date: 1986-04-04
Filing date: 1986-04-04
Publication date: 1991-11-22
Also published as: JPS62162820U

Description

【考案の詳細な説明】［考案の技術分野］この考案は電極端子間の耐電圧向上を図る高周
波用やスナバー用コンデンサの端子装置に関す
る。[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a terminal device for high-frequency and snubber capacitors that improves the withstand voltage between electrode terminals.

［考案の技術的背景とその問題点］コンデンサは内部の配線の方法や引出端子の構
造などにより残留インダクタンスが内在し、一般
的な構造のコンデンサの場合0.3〜1.0μH程度の値
を示す。残留インダクタンスは商用電源で使用す
る場合にはその影響を無視できるが、周波数が高
くなると無視し得なくなり、共振周波数を越すと
コンデンサとして機能よりリアクターとしての作
用をもつようになる。このため高周波で使用する
コンデンサは残留インダクタンス値が小さくない
と高周波或においてコンデンサとして作用しなく
なる問題点があつた。同様の原理からコンデンサ
をノイズ吸収に使用する場合もノイズの幅が狭い
場合には、ノイズ吸収作用がなくなるという問題
点があつた。コンデンサを低減するために外部に
引出す電極端子を極力接近させることが行なわれ
ていたが、近づけすぎると電極端子間の耐電圧に
問題が生じ、また従来は外部端子が各々独立して
いるため、引出端子寸法などの面からも、電極端
子を接近させることに限界があつた。[Technical background of the invention and its problems] Capacitors have residual inductance due to the internal wiring method and the structure of the lead terminal, and a capacitor with a typical structure exhibits a value of about 0.3 to 1.0 μH. The effect of residual inductance can be ignored when used with a commercial power source, but as the frequency increases, it becomes impossible to ignore, and when the resonance frequency is exceeded, it begins to function more like a reactor than a capacitor. For this reason, capacitors used at high frequencies have the problem of not functioning as a capacitor at high frequencies unless the residual inductance value is small. Based on the same principle, when a capacitor is used for noise absorption, there is a problem that the noise absorption effect disappears when the width of the noise is narrow. In order to reduce capacitance, the electrode terminals that lead out to the outside were placed as close together as possible, but if they were too close together, problems would arise with the withstand voltage between the electrode terminals, and in the past, each external terminal was independent, so There is also a limit to how close the electrode terminals can be to each other due to the dimensions of the lead-out terminals.

［考案の目的］この考案は残留インダクタンスが小さくでき、
高周波用やスナバー用に使用して有効なコンデン
サ用端子装置を提供するものである。[Purpose of the invention] This invention can reduce residual inductance,
The present invention provides a terminal device for a capacitor that is effective for use in high frequency applications and snubber applications.

［考案の概要］この考案になるコンデンサ用端子装置は２つの
電極端子を樹脂成形によつて一体化したコンデン
サ用端子装置において、前記電極端子間に該電極
端子の幅および高さより大なる絶縁バリヤを設け
たことを特徴とするものである。[Summary of the invention] The capacitor terminal device according to this invention is a capacitor terminal device in which two electrode terminals are integrated by resin molding, and an insulating barrier larger than the width and height of the electrode terminals is provided between the electrode terminals. It is characterized by having the following.

［考案の実施例］第１図に平面図、第２図に正断面図、第３図に
底面図を示すように２つの電極端子１，２をエポ
キシ樹脂で成形して一体化した成形体３を構成す
る。該成形体３はその上部において、前記電極端
子１，２の露出している上部４，５より幅および
高さが大なる絶縁バリヤ６を形成しており、また
前記電極端子１，２の露出している下部７，８に
おいても、該下部７，８より幅および高さの大な
る下部絶縁バリヤ９を設けることが望ましい。そ
してコンデンサケースの上蓋（第２図に一点鎖線
で示す）などへの取着を容易とするためにおねじ
部１０を形成してある。このような構成からなる
コンデンサ用端子装置をコンデンサ素子と接続す
るには、第４図に示すようにまず、ケース１１の
上蓋１２にパツキング１３などを介してナツト１
４で締付けコンデンサ素子１５からの引出端子１
６を前記電極端子１，２の下部７，８にはんだ付
けして、これらをケース１１に収凾し密閉するも
のである。たとえば90×50×125（mm）の角形ケー
スに2μFのコンデンサ素子を収納し、本考案にな
る端子装置を用いた場合の残留インダクタンスを
測定した結果は0.085μH、また耐電圧は25kVAC
（この値で沿面放電）であつた。これに対しM6mm
のボルト端子で端子間距離30mmで絶縁バリヤを設
けない従来例は残留インダクタンスが0.176μF、
耐電圧は8kVAC（この値で沿面放電）であり、本
考案が残留インダクタンスで1/2、耐電圧で３倍
の値を示している。[Example of the invention] As shown in Fig. 1 is a plan view, Fig. 2 is a front sectional view, and Fig. 3 is a bottom view, a molded body is formed by molding two electrode terminals 1 and 2 with epoxy resin and integrating them. 3. The molded body 3 forms at its upper part an insulating barrier 6 which is larger in width and height than the exposed upper parts 4 and 5 of the electrode terminals 1 and 2, and It is also desirable to provide a lower insulating barrier 9 which is wider and taller than the lower portions 7 and 8. A male threaded portion 10 is formed to facilitate attachment to the top cover of the capacitor case (indicated by a chain line in FIG. 2). In order to connect the capacitor terminal device having such a configuration to a capacitor element, first attach the nut 1 to the upper cover 12 of the case 11 via the packing 13, etc., as shown in FIG.
4. Tighten the lead terminal 1 from the capacitor element 15.
6 are soldered to the lower portions 7 and 8 of the electrode terminals 1 and 2, and these are housed in a case 11 and hermetically sealed. For example, when a 2μF capacitor element is housed in a 90 x 50 x 125 (mm) rectangular case and the terminal device of the present invention is used, the residual inductance is 0.085μH, and the withstand voltage is 25kVAC.
(This value was a creeping discharge). On the other hand, M6mm
In the conventional example with bolt terminals, distance between terminals of 30 mm, and no insulation barrier, the residual inductance is 0.176 μF.
The withstand voltage is 8kVAC (creeping discharge at this value), and the present invention has half the residual inductance and three times the withstand voltage.

［考案の効果］この考案によれば従来に比し残留インダクタン
ス、および耐電圧特性を大幅に向上させることが
できる効果を有する。[Effects of the invention] According to this invention, the residual inductance and withstand voltage characteristics can be significantly improved compared to the conventional method.

[Brief explanation of the drawing]

図面はいずれも本考案になるコンデンサ用端子
装置を示すもので第１図は平面図、第２図は正断
面図、第３図は底面図、第４図はコンデンサの正
断面図である。１，２……電極端子、３……成形体、４，５…
…電極端子の上部、６……絶縁バリヤ、７，８…
…電極端子の下部、９……下部絶縁バリヤ、１０
……おねじ部、１１……ケース、１２……上蓋、
１３……パツキング、１５……コンデンサ素子、
１６……引出端子。 The drawings all show the terminal device for a capacitor according to the present invention; FIG. 1 is a plan view, FIG. 2 is a front sectional view, FIG. 3 is a bottom view, and FIG. 4 is a front sectional view of the capacitor. 1, 2... Electrode terminal, 3... Molded body, 4, 5...
...Top of electrode terminal, 6...Insulating barrier, 7,8...
... lower part of electrode terminal, 9 ... lower insulating barrier, 10
...Male thread part, 11...Case, 12...Top lid,
13... Packing, 15... Capacitor element,
16... Output terminal.

Claims

[Claims for Utility Model Registration] (1) In a capacitor terminal device in which two electrode terminals are integrated by resin molding, an insulating barrier larger than the width and height of the electrode terminals is provided between the electrode terminals. A terminal device for a capacitor characterized by the following. (2) Utility model registration claim (1) characterized in that a lower insulating barrier having a width and height larger than the lower part of the electrode terminal is provided between the lower part of the electrode terminal exposed inside the capacitor case. Terminal device for the capacitor described. (3) Utility model registration claim paragraph (1) or paragraph 2, characterized in that two electrode terminals are brought as close as possible.
Terminal device for capacitors as described in (2).