JP2604175Y2 - Feed-through filter - Google Patents
Feed-through filterInfo
- Publication number
- JP2604175Y2 JP2604175Y2 JP1993009262U JP926293U JP2604175Y2 JP 2604175 Y2 JP2604175 Y2 JP 2604175Y2 JP 1993009262 U JP1993009262 U JP 1993009262U JP 926293 U JP926293 U JP 926293U JP 2604175 Y2 JP2604175 Y2 JP 2604175Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal case
- terminal
- capacitors
- capacitor
- soldered
- 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
Description
【０００１】[0001]
【産業上の利用分野】この考案は、貫通型のＬＣフィル
タに関する。BACKGROUND OF THE INVENTION The present invention relates to a feedthrough type LC filter.
【０００２】[0002]
【従来の技術】図２は従来の貫通型ＬＣフィルタを示し
ており、筒状金属ケース１の内部両端を大径に形成し、
この大径両端部内に積層コンデンサ２，２を内径段部
３，３に当接するよう収納し、金属ケース１の軸心に沿
って貫通する貫通端子４が両積層コンデンサ２，２を貫
通し、金属ケース１内で貫通端子４の両コンデンサ２と
２間に位置する部分にフェライトビーズ５を外嵌挿した
構造になっている。2. Description of the Related Art FIG. 2 shows a conventional through-type LC filter in which both ends of a cylindrical metal case 1 are formed to have a large diameter.
The multilayer capacitors 2, 2 are housed in the large-diameter ends so as to abut against the inner diameter steps 3, 3. A ferrite bead 5 is externally fitted to a portion of the through terminal 4 located between the capacitors 2 in the metal case 1.
【０００３】上記金属ケース１は、強度が要求されるた
めスチールを用いて形成し、貫通端子４は、通電時の電
流値を大きくとるために銅を用いるのが一般的であり、
また、コンデンサ２，２は外周の外側電極６が金属ケー
ス１に、内周の内側電極７が貫通端子４に各々半田付け
される。[0003] The metal case 1 is generally formed of steel because of its strength, and the through terminal 4 is generally formed of copper in order to obtain a large current value when energized.
In the capacitors 2, the outer electrode 6 on the outer periphery is soldered to the metal case 1, and the inner electrode 7 on the inner periphery is soldered to the through terminal 4.
【０００４】[0004]
【考案が解決しようとする課題】ところで、コンデンサ
２，２を金属ケース１及び貫通端子４に半田付けすると
き、金属ケース１及び貫通端子４に高温が加わることに
なるが、スチール製の金属ケース１と銅製の貫通端子４
には熱膨張率に大きな差があり、特に貫通端子４の方が
伸縮発生が大きく、従ってコンデンサ２，２の半田付け
作業時に貫通端子４は金属ケース１よりも大きく伸長
し、半田付け後の常温に戻るとき金属ケース１よりも大
きく収縮することになる。また極低温環境で使用する場
合は、この差はさらに大きくなる。When the capacitors 2 and 2 are soldered to the metal case 1 and the through terminal 4, a high temperature is applied to the metal case 1 and the through terminal 4; 1 and copper through terminal 4
Has a large difference in the thermal expansion coefficient. In particular, the expansion and contraction of the through terminal 4 is larger than that of the through terminal 4. Therefore, during the soldering operation of the capacitors 2 and 2, the through terminal 4 expands more than the metal case 1 and When the temperature returns to normal temperature, the metal case 1 contracts more greatly. When used in a cryogenic environment, this difference is even greater.
【０００５】上記のように、金属ケース１と貫通端子４
の収縮量に差が生じると、金属ケース１に固定化された
コンデンサ２，２に対して貫通端子４は内側へ向けての
力をかけることになり、この力をすべて半田付け部分で
支持することになるので、この力によってコンデンサ
２，２の内側電極７が引き剥され、コンデンサ２，２と
貫通端子４の半田付け部分が破損するという問題があ
る。As described above, the metal case 1 and the through terminal 4
When there is a difference in the amount of shrinkage, the through terminal 4 applies an inward force to the capacitors 2 and 2 fixed to the metal case 1, and this force is all supported by the soldered portion. Therefore, there is a problem that the inner electrodes 7 of the capacitors 2 and 2 are peeled off by this force, and a soldered portion between the capacitors 2 and 2 and the through terminal 4 is damaged.
【０００６】そこで、この考案は、上記のような問題点
を解決するため、金属ケースと貫通端子の収縮の差によ
る内側へ向けての力をコンデンサを介して金属ケースで
受けるようにし、コンデンサの内側電極と貫通端子の半
田付け部分の破損発生を防ぐことができる貫通型フィル
タを提供することを目的としている。In order to solve the above-mentioned problems, the present invention is designed so that an inward force due to the difference in contraction between the metal case and the through terminal is received by the metal case via the capacitor, and the capacitor is mounted on the metal case. It is an object of the present invention to provide a penetration type filter that can prevent the occurrence of breakage of a soldered portion between an inner electrode and a penetration terminal.
【０００７】[0007]
【課題を解決するための手段】上記のような課題を解決
するため、この考案は、金属ケース内の両端部にコンデ
ンサを収納し、金属ケースよりも熱収縮量が大きい貫通
端子が両コンデンサ及び金属ケース内を軸心に沿って貫
通し、金属ケース内の両端部に収納された両コンデンサ
の内側電極が貫通端子とそれぞれ半田付けされている貫
通型フィルタにおいて、貫通端子の両端部側に両コンデ
ンサの外面に面接触する金属製の止め具を固定した構成
としたものであり、また、上記考案において、コンデン
サの内側電極は、軸心の方向に沿って設けられている構
成を採用したものである。In order to solve the above-mentioned problems, the present invention has a structure in which capacitors are housed at both ends in a metal case , and the through terminals having a larger heat shrinkage than the metal case have both capacitors and capacitors. Both capacitors penetrate the metal case along the axis and are housed at both ends in the metal case
In the through-type filter inner electrodes are soldered respectively to the through terminal state, and are not to the structure of fixing the metal fasteners into surface contact with the outer surface of both capacitor both ends of the through-terminal, also In the above idea,
The inner electrode of the sensor is provided along the axial direction.
Ru der which was adopted formed.
【０００８】[0008]
【作用】貫通端子の両端部側に両コンデンサの外面に面
接触する金属製の止め具を固定したので、コンデンサを
金属ケース及び貫通コンデンサに半田付けした後の常温
に戻るとき、また極低温環境での使用の際の金属ケース
に対する貫通端子の収縮により発生する力が、止め具と
面接触しているコンデンサの外面に伝わり、コンデンサ
は内径段部で金属ケースに支持されているので、止め具
とコンデンサを介して金属ケースで支持され、これによ
ってコンデンサの内側電極と貫通端子の半田付け部分に
力がかかるのを防ぎ、内側電極が剥れて破損するのを防
止することができる。[Action] surface on both ends of the through pin on the outer surface of both condensers
Since the metal stopper that comes in contact is fixed, it occurs when the capacitor returns to normal temperature after being soldered to the metal case and the feedthrough capacitor, and also occurs due to the contraction of the feedthrough terminal with respect to the metal case when used in a cryogenic environment. force, and stop
It is transmitted to the outer surface of the capacitor in surface contact , and the capacitor is supported by the metal case at the inner diameter step, so it is supported by the metal case via the stopper and the capacitor, which allows the solder between the inner electrode of the capacitor and the through terminal It is possible to prevent a force from being applied to the attachment portion and prevent the inner electrode from peeling and being damaged.
【０００９】[0009]
【実施例】以下、この考案の実施例を添付図面の図１に
基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
【００１０】図１において、貫通型フィルタは、スチー
ルを用いた筒状金属ケース１１の内部両端を大径に形成
し、この大径両端部内にワッシャ形の積層コンデンサ１
２，１２を内径段部１３，１３に当接するよう収納し、
金属ケース１１の軸心に沿って貫通する貫通端子１４が
両積層コンデンサ１２，１２を貫通し、金属ケース１１
内で貫通端子１４の両コンデンサ１２と１２間に位置す
る部分にフェライトビーズ１５を外嵌挿し、貫通端子１
４の両端部側に両コンデンサ１２，１２の外面に当接す
る止め具１８，１８を固定し、両コンデンサ１２，１２
の外側電極１６を金属ケース１１と、内側電極１７を貫
通端子１４と各々半田付けしている。なお、両コンデン
サ１２，１２は、図示のような積層構造のものに限ら
ず、両面にコンデンサ電極を構成したもの等任意であ
る。In FIG. 1, a through filter has a large diameter inside both ends of a cylindrical metal case 11 made of steel, and a washer-type multilayer capacitor 1 is provided in both ends of the large diameter.
2 and 12 are stored so as to abut against the inner diameter steps 13 and 13,
A penetrating terminal 14 penetrating along the axis of the metal case 11 penetrates the multilayer capacitors 12, 12, and
A ferrite bead 15 is externally inserted into a portion of the through terminal 14 between the two capacitors 12 and 12 so that the through terminal 1
Fixing the stoppers 18, 18 in contact with the outer surfaces of both capacitors 12, 12 on both end sides of the capacitor 4,
The outer electrode 16 is soldered to the metal case 11, and the inner electrode 17 is soldered to the through terminal 14. The capacitors 12, 12 are not limited to those having a laminated structure as shown in the figure, but may be any such as those having capacitor electrodes formed on both sides.
【００１１】前記貫通端子１４は、通電時の電流値を大
きくとるために銅を用い、この貫通端子１４の両端部側
に固定した止め具１８，１８は金属製の材料を用い、貫
通端子１４に対してねじ止め，カシメ，半田付け，接着
等の手段で固定化される。The through terminal 14 is made of copper in order to obtain a large current value when energized, and the stoppers 18 fixed to both ends of the through terminal 14 are made of a metal material. It is fixed by means such as screwing, caulking, soldering, and bonding.
【００１２】この考案の貫通型フィルタは、上記のよう
な構成であり、コンデンサ１２，１２を金属ケース１１
及び貫通端子１４と半田付けするとき、金属ケース１１
及び貫通端子１４に熱が伝わり、それぞれに伸びが生
じ、半田付け後に常温に戻るとき、また極低温環境で使
用するとき金属ケース１１と貫通端子１４は共に収縮す
る。The feed-through filter of the present invention has the above-described configuration, and the capacitors 12 and 12 are connected to the metal case 11.
When soldering with the through terminal 14, the metal case 11
The heat is transmitted to the through terminal 14 and the respective terminals are elongated, and the metal case 11 and the through terminal 14 both contract when returning to room temperature after soldering or when used in an extremely low temperature environment.
【００１３】貫通端子１４は、金属ケース１１よりも収
縮量が大きいが、その収縮時の力は両端側に固定した止
め具１８，１８で両コンデンサ１２，１２に伝わり、両
コンデンサ１２，１２は金属ケース１１の内径段部１３
で受けられているので、貫通端子１４の収縮によって生
じる力は、結果として止め具１８とコンデンサ１２を介
して金属ケース１１で支持され、貫通端子１４とコンデ
ンサ１２の内側電極１７の半田付け部分に力がかかるの
を防ぐことができる。The through terminal 14 shrinks more than the metal case 11, but the force at the time of shrinkage is transmitted to both capacitors 12, 12 by stoppers 18, 18 fixed to both ends, and both capacitors 12, 12 Inside diameter step 13 of metal case 11
As a result, the force generated by the contraction of the through terminal 14 is supported by the metal case 11 via the stopper 18 and the capacitor 12, and is applied to the soldered portion of the through terminal 14 and the inner electrode 17 of the capacitor 12. It can prevent the force from being applied.
【００１４】従って、貫通端子１４の収縮により、内側
電極１７が剥れてコンデンサ１２，１２と貫通端子１４
の半田付け部分が破損するのを確実に防止することがで
きる。Accordingly, the shrinkage of the through terminal 14 causes the inner electrode 17 to be peeled off and the capacitors 12 and 12 and the through terminal 14 to shrink.
It is possible to reliably prevent the soldered portion from being damaged.
【００１５】また、貫通型フィルタは、回路基板への実
装により温度差の大きい熱衝撃を繰り返し受ける場合が
あるが、この場合においても金属ケース１１と貫通端子
１４の収縮の差を止め具１８，１８とコンデンサ１２，
１２を介して金属ケース１１で支持し、コンデンサ１
２，１２と貫通端子１４の半田付け部分の破損発生を防
止することができる。The through-type filter may be repeatedly subjected to thermal shock having a large temperature difference due to mounting on a circuit board. In this case, the difference in shrinkage between the metal case 11 and the through terminal 14 is also reduced by the stoppers 18, 18 and capacitor 12,
12 and supported by the metal case 11 and the capacitor 1
It is possible to prevent the occurrence of breakage of the soldered portions of the terminals 2 and 12 and the through terminals 14.
【００１６】[0016]
【考案の効果】以上のように、この考案によると、コン
デンサ及び金属ケース内を貫通する貫通端子の両端部側
にコンデンサの外面に面接触する金属製の止め具を固定
したので、金属ケースと貫通端子の熱による伸縮率の差
による貫通端子の収縮力を止め具とコンデンサを介して
金属ケースで支持することができ、コンデンサと金属ケ
ースに対する貫通端子の半田付け後における貫通端子の
収縮時にコンデンサの内側電極部分にかかる力を分散す
ることができ、内側電極の剥れによるコンデンサと貫通
端子の半田付け部分の破損発生を防止し、貫通型フィル
タの信頼性を向上させることができる。As described above, according to the present invention, metal stoppers that are in surface contact with the outer surface of the capacitor are fixed to both ends of the through terminal penetrating the capacitor and the metal case. The shrinkage force of the through terminal due to the difference in expansion and contraction ratio due to the heat of the through terminal can be supported by the metal case via the stopper and the capacitor. The force applied to the inner electrode portion can be dispersed, and damage to the soldered portion between the capacitor and the through terminal due to peeling of the inner electrode can be prevented, and the reliability of the through filter can be improved.
【図１】この考案に係る貫通型フィルタの縦断面図。FIG. 1 is a longitudinal sectional view of a penetration type filter according to the present invention.
【図２】従来の貫通型フィルタを示す縦断面図。FIG. 2 is a longitudinal sectional view showing a conventional through-type filter.
１１ 金属ケース １２ コンデンサ １４ 貫通端子 １６ 外側電極 １７ 内側電極 １８ 止め具 DESCRIPTION OF SYMBOLS 11 Metal case 12 Capacitor 14 Through terminal 16 Outer electrode 17 Inner electrode 18 Stopper
───────────────────────────────────────────────────── フロントページの続き (72)考案者 坂本 幸夫 京都府長岡京市天神二丁目26番10号 株 式会社村田製作所内 (56)参考文献 実開 昭58−125438（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H03H 7/01 - 7/075 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yukio Sakamoto 2-26-10 Tenjin, Nagaokakyo-shi, Kyoto Murata Manufacturing Co., Ltd. Field surveyed (Int.Cl. 7 , DB name) H03H 7 /01-7/075
Claims (2)
納し、金属ケースよりも熱収縮量が大きい貫通端子が両
コンデンサ及び金属ケース内を軸心に沿って貫通し、金
属ケース内の両端部に収納された両コンデンサの内側電
極が貫通端子とそれぞれ半田付けされている貫通型フィ
ルタにおいて、貫通端子の両端部側に両コンデンサの外
面に面接触する金属製の止め具を固定したことを特徴と
する貫通型フィルタ。1. A housing the capacitor at both ends of the metal case, the amount of thermal contraction than the metal case has a larger through-pin penetrates along in both capacitors and a metal case the axis, gold
Inside the two capacitors housed at both ends in the metal case.
A through-type filter in which the poles are soldered to the through-terminals, wherein a metal stopper that is in surface contact with the outer surfaces of both capacitors is fixed to both ends of the through-terminal.
沿って設けられている、請求項１記載の貫通型フィル
タ。 2. The inner electrode of the capacitor is oriented in the direction of the axis.
The penetration type fill according to claim 1 provided along.
Ta.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993009262U JP2604175Y2 (en) | 1993-02-10 | 1993-02-10 | Feed-through filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993009262U JP2604175Y2 (en) | 1993-02-10 | 1993-02-10 | Feed-through filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0662625U JPH0662625U (en) | 1994-09-02 |
| JP2604175Y2 true JP2604175Y2 (en) | 2000-04-17 |
Family
ID=11715524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993009262U Expired - Lifetime JP2604175Y2 (en) | 1993-02-10 | 1993-02-10 | Feed-through filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2604175Y2 (en) |
-
1993
- 1993-02-10 JP JP1993009262U patent/JP2604175Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0662625U (en) | 1994-09-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |