JPH08329760A - Reed switch - Google Patents
Reed switchInfo
- Publication number
- JPH08329760A JPH08329760A JP13397295A JP13397295A JPH08329760A JP H08329760 A JPH08329760 A JP H08329760A JP 13397295 A JP13397295 A JP 13397295A JP 13397295 A JP13397295 A JP 13397295A JP H08329760 A JPH08329760 A JP H08329760A
- Authority
- JP
- Japan
- Prior art keywords
- reed switch
- insulating container
- sealing
- lead terminal
- diameter
- 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.)
- Granted
Links
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Contacts (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はリードスイッチに関し、
特にプリント基板等へ直接実装する表面実装型リードス
イッチに関する。FIELD OF THE INVENTION The present invention relates to a reed switch,
In particular, it relates to a surface mount reed switch that is directly mounted on a printed circuit board or the like.
【０００２】[0002]
【従来の技術】従来、通常のリードスイッチは、磁性材
料からなる一対のリード片と、各リード片の先端部に貴
金属めっきを施すとともに適量の間隔を開けて対向させ
た接点部と、これらを不活性ガスと一緒に内部に封入す
る絶縁容器と、前記リード片に連なり前記絶縁容器の両
端から直線状に突き出したリード端子部とで形成されて
いる。2. Description of the Related Art Conventionally, a conventional reed switch has a pair of reed pieces made of a magnetic material, a contact portion in which a tip of each reed piece is plated with a noble metal, and an appropriate amount of space is provided to face each other. It is formed of an insulating container that is sealed inside together with an inert gas, and lead terminal portions that are connected to the lead pieces and that linearly project from both ends of the insulating container.
【０００３】このリードスイッチをプリント配線板に実
装する場合、絶縁容器部分を収容するための穴を開け、
そこに絶縁容器の一部を配置するとともに、リード端子
部をプリント配線板の導体パターンに接触させ、半田を
用いて半田付けを行う。また、プリント配線板に絶縁容
器部分の穴を開けないで直接基板上に搭載する場合は、
リードスイッチのリード端子部を直角に曲げ、プリント
配線板のスルーホールなどの穴を通して裏面側に形成さ
れた導体パターンに半田付けを行うのが一般的である。When this reed switch is mounted on a printed wiring board, a hole for accommodating an insulating container portion is opened,
A part of the insulating container is placed there, the lead terminal portion is brought into contact with the conductor pattern of the printed wiring board, and soldering is performed using solder. Also, when mounting directly on the printed circuit board without making holes in the insulating container part,
In general, the lead terminal portion of the reed switch is bent at a right angle and soldered to a conductor pattern formed on the back surface side through a hole such as a through hole of a printed wiring board.
【０００４】このようなリードスイッチでは、電子機器
の高密度化に不可欠となっている表面実装をしようとし
ても問題がある。すなわち、プリント配線板に絶縁容器
を収める穴を開けることは困難であるため、従来のリー
ドスイッチは使用できないという問題がある。Such a reed switch has a problem even if it is attempted to be surface mounted, which is indispensable for increasing the density of electronic equipment. That is, since it is difficult to make a hole for accommodating the insulating container in the printed wiring board, there is a problem that the conventional reed switch cannot be used.
【０００５】そのため、表面実装するためのリードスイ
ッチとしては、例えば実開平２−１４８５１５号公報等
に記載のものが知られている。Therefore, as a reed switch for surface mounting, for example, one described in Japanese Utility Model Laid-Open No. 2-148515 is known.
【０００６】図４（ａ），（ｂ）はそれぞれかかる従来
の一例を示すリードスイッチの平面図および正面図であ
る。図４（ａ），（ｂ）に示すように、この表面実装型
リードスイッチは、接点部を封入した絶縁容器１０と、
接点部に接続され且つ所定の幅に圧延された圧延リード
端子１１とを備え、この圧延リード端子１１は絶縁容器
１０の近辺で折曲げられた脚部１１ｂおよびこの脚部１
１ｂの先端部から絶縁容器１０の長手方向に平行に伸長
した実装部１１ａを有している。FIGS. 4 (a) and 4 (b) are a plan view and a front view of a reed switch showing such a conventional example, respectively. As shown in FIGS. 4A and 4B, this surface-mounted reed switch includes an insulating container 10 enclosing a contact portion,
A rolled lead terminal 11 connected to the contact portion and rolled to a predetermined width is provided. The rolled lead terminal 11 is bent near the insulating container 10 to form a leg portion 11b and the leg portion 1.
It has a mounting portion 11a extending from the tip portion of 1b in parallel with the longitudinal direction of the insulating container 10.
【０００７】図５は図４に示すリードスイッチの配線板
への実装状態を表わす断面図である。図５に示すよう
に、このリードスイッチをプリント配線板７に実装する
際、プリント配線板７に形成された導体パターン８上に
スイッチの圧延リード端子１１の実装部１１ａを実装
し、半田９により固定する。FIG. 5 is a sectional view showing a mounting state of the reed switch shown in FIG. 4 on a wiring board. As shown in FIG. 5, when mounting the reed switch on the printed wiring board 7, the mounting portion 11 a of the rolled lead terminal 11 of the switch is mounted on the conductor pattern 8 formed on the printed wiring board 7 and the solder 9 is used. Fix it.
【０００８】[0008]
【発明が解決しようとする課題】上述した従来のリード
スイッチは、接点部を封入した後にリード端子部の圧延
を行ったり、曲げ加工を施している。このため、加工工
数が必要であり、またリード端子部の封入部分にストレ
スが加わるので、絶縁容器に亀裂が生じ易いという欠点
がある。In the above-described conventional reed switch, the contact portion is sealed and then the lead terminal portion is rolled or bent. For this reason, processing man-hours are required, and stress is applied to the enclosed portion of the lead terminal portion, so that the insulating container is apt to crack.
【０００９】しかも、かかるリードスイッチは、実装部
を１面しか取れず、取付け方向が限定される上、そのリ
ード端子部が軟らかく曲がり易いので、取扱いに慎重さ
を要するという欠点がある。In addition, such a reed switch has a drawback in that the mounting portion can be removed from only one side, the mounting direction is limited, and the lead terminal portion is soft and easily bent, so that the reed switch requires careful handling.
【００１０】本発明の目的は、かかる絶縁容器に亀裂を
生ずることなく、配線板上への実装を容易にするととも
に、取扱いの容易な表面実装用リードスイッチを提供す
ることにある。An object of the present invention is to provide a surface mount reed switch which is easy to handle and easy to mount on a wiring board without causing a crack in the insulating container.
【００１１】[0011]
【課題を解決するための手段】本発明のリードスイッチ
は、全体を同一径で形成したガラス等の絶縁容器と、導
電金属材からなり前記絶縁容器の内径に等しい径を有す
るとともに前記絶縁容器の両端部に配置される封止部と
前記封止部の外側に形成され且つ前記絶縁容器の外径寸
法以上の径を有する電気接続部と金属磁性体からなり前
記封止部の内側に形成されるとともに相互の先端部を所
定の間隔をあけて対向させた接点リード片とよりなるリ
ード端子とを備え、前記リード端子の前記電気接続部に
半田付けの可能な表面処理を施して構成される。The reed switch of the present invention has an insulating container made of glass or the like and having the same diameter as a whole, and has a diameter equal to the inner diameter of the insulating container and made of a conductive metal material. A sealing portion arranged at both ends and an electrical connection portion formed outside the sealing portion and having a diameter equal to or larger than the outer diameter of the insulating container, and formed inside the sealing portion. And a lead terminal composed of contact lead pieces whose front end portions are opposed to each other with a predetermined gap therebetween, and the electric connection portion of the lead terminal is subjected to a solderable surface treatment. .
【００１２】また、本発明のリードスイッチは、そのリ
ード端子の封止部と電気接続部並びに記絶縁容器の断面
形状を円，長円，楕円，矩形のいずれかに形成する。Further, in the reed switch of the present invention, the cross-sectional shape of the sealing portion of the lead terminal, the electrical connection portion, and the insulating container is formed into any of a circle, an ellipse, an ellipse, and a rectangle.
【００１３】さらに、本発明のリードスイッチは、その
リード端子の接点リード片を封止部や電気接続部に接合
するか、または一体成形により形成され、リード端子の
接点リード片や封止部および電気接続部を金属磁性体か
ら形成してもよい。Further, in the reed switch of the present invention, the contact lead piece of the lead terminal is joined to the sealing portion or the electrical connection portion, or is formed by integral molding. The electrical connection portion may be formed of a magnetic metal material.
【実施例】次に、本発明について図面を参照して説明す
る。Next, the present invention will be described with reference to the drawings.
【００１４】図１（ａ），（ｂ）はそれぞれ本発明の一
実施例を示すリードスイッチの平面図およびＡ−Ａ断面
図である。図１（ａ），（ｂ）に示すように、本実施例
のリードスイッチは、両端が開口され且つ全体を同一径
で形成したガラス等の絶縁容器１と、この絶縁容器１の
両端に、複数の金属磁性体よりなる接点リード片４を備
えたリード端子５を有し、それぞれの先端をある空隙を
あけて対向させるとともに、絶縁容器１内に密封したも
のである。この絶縁容器１の外部から加えられる磁場に
より、前記空隙を閉じたり、開いたりして電気回路を開
閉する。特に、リード端子５は接点リード片４とこのリ
ード片４を接合部６で接合した導電金属材で形成した封
止部３および電気接続部２とからなり、その封止部３は
絶縁容器１の内側寸法と同じであり、また封止部３の外
側に形成した電気接続部２は絶縁容器１の寸法と同じ
か、それ以上とする。さらに、この電気接続部２は表面
上に半田を塗布するなどして、半田付けが可能な処理を
施しておく。尚、電気接続部２と封止部３は一体成形さ
れる。1 (a) and 1 (b) are a plan view and a sectional view taken along line AA of a reed switch showing an embodiment of the present invention, respectively. As shown in FIGS. 1 (a) and 1 (b), the reed switch of this embodiment has an insulating container 1 made of glass or the like having both ends opened and having the same diameter as a whole, and both ends of the insulating container 1. A lead terminal 5 having a contact lead piece 4 made of a plurality of metal magnetic materials is provided, and the tips of the lead terminals 5 are opposed to each other with a certain gap therebetween and sealed in the insulating container 1. A magnetic field applied from the outside of the insulating container 1 closes or opens the gap to open and close an electric circuit. In particular, the lead terminal 5 is composed of a contact lead piece 4, a sealing portion 3 and an electrical connecting portion 2 which are formed of a conductive metal material in which the lead piece 4 is joined at a joining portion 6, and the sealing portion 3 is an insulating container 1. And the electrical connection portion 2 formed on the outer side of the sealing portion 3 is the same as or larger than the dimension of the insulating container 1. Further, the electrical connection portion 2 is subjected to a solderable process by applying solder on the surface thereof. Note that the electrical connection portion 2 and the sealing portion 3 are integrally molded.
【００１５】すなわち、このリードスイッチの実際の組
立てにあたっては、断面が円形のガラスからなる絶縁容
器１の両端に、いずれも金属磁性体よりなり且つ絶縁容
器１の外形寸法と同じ電気接続部２と絶縁容器１の内側
寸法と同じ封止部３および接点リード片４からなる２つ
のリード端子５を挿入した後、それぞれの先端にある接
点リード片４所定の空隙をあけて対向させる。しかる後
に、不活性ガスとともにリード端子５の封止部３を加熱
封止して、接点リード片４を絶縁容器１内に密封する。
さらに、その後電気接続部２には、前述したような半田
処理を施す。That is, in the actual assembling of the reed switch, an electrical connecting portion 2 made of a magnetic metal material and having the same outer dimensions as the insulating container 1 is provided at both ends of the insulating container 1 made of glass having a circular cross section. After inserting the two lead terminals 5 having the same sealing portion 3 and contact lead pieces 4 as the inner dimensions of the insulating container 1, the contact lead pieces 4 at the respective tips are made to face each other with a predetermined gap. Thereafter, the sealing portion 3 of the lead terminal 5 is heat-sealed together with the inert gas, and the contact lead piece 4 is sealed in the insulating container 1.
Further, thereafter, the electrical connection portion 2 is subjected to the soldering process as described above.
【００１６】図２（ａ），（ｂ）はそれぞれ図１に示す
リードスイッチの配線板への実装状態の正面図および側
面図である。図２（ａ），（ｂ）に示すように、このリ
ードスイッチをプリント配線板７へ実装するにあたって
は、プリント配線板７の導体パターン８上にリード端子
５の実装部である電気接続部２を乗せ、これらを半田９
を用いて半田付けする。しかるに、絶縁容器１の外形寸
法と電気接続部２の外形寸法とを同じにしているので、
プリント配線板７へ絶縁容器１を納める穴開けや封入後
の端子加工を不要にできる。また、電気接続部２も円形
であるため、実装部の形成を全周に渡って可能にするの
で、取付け方向の制限がなくなり、実装設計や実装その
ものを容易にすることができる。その上、リード端子５
は固いため、曲がりがなくなり、封入部分にもストレス
を加わらないので、絶縁容器１に亀裂を生じなくなる。
従って、取扱い易くなり、表面実装に適応させることが
できる。2 (a) and 2 (b) are a front view and a side view, respectively, of the reed switch shown in FIG. 1 mounted on a wiring board. As shown in FIGS. 2A and 2B, when mounting the reed switch on the printed wiring board 7, the electrical connection portion 2 which is the mounting portion of the lead terminal 5 on the conductor pattern 8 of the printed wiring board 7. And solder 9
Solder using. However, since the outer dimensions of the insulating container 1 and the electrical connection portion 2 are the same,
It is possible to eliminate the need for making holes for housing the insulating container 1 in the printed wiring board 7 and for processing the terminals after encapsulation. Further, since the electrical connection portion 2 is also circular, the mounting portion can be formed over the entire circumference, so that there is no limitation on the mounting direction and the mounting design and mounting itself can be facilitated. Besides, the lead terminal 5
Since it is hard, there is no bending and no stress is applied to the enclosed portion, so that the insulating container 1 is not cracked.
Therefore, it is easy to handle and can be adapted to surface mounting.
【００１７】図３（ａ），（ｂ）はそれぞれ本発明の他
の実施例を示すリードスイッチの平面図およびＢ−Ｂ断
面図である。図３（ａ），（ｂ）に示すように、本実施
例は断面が矩形の絶縁容器１を用いた点と、リード端子
５の形状における接点リード片４および金属材からなる
封止部３を一体成形により構成した点にある。本実施例
によれば、実装部である電気接続部２が４面となり、前
述した一実施例の円形断面に比べ、プリント配線板への
実装にあたり、転がりにくいので実装し易いという利点
がある。3 (a) and 3 (b) are a plan view and a BB sectional view of a reed switch showing another embodiment of the present invention, respectively. As shown in FIGS. 3 (a) and 3 (b), this embodiment uses an insulating container 1 having a rectangular cross section, a contact lead piece 4 in the shape of a lead terminal 5, and a sealing portion 3 made of a metal material. The point is that they are integrally molded. According to the present embodiment, the electrical connection portion 2 as the mounting portion has four surfaces, and has an advantage that it is easy to mount because it does not easily roll when mounted on a printed wiring board, as compared with the circular cross section of the above-described embodiment.
【００１８】以上二つの実施例について述べたが、絶縁
容器１およびこれに対応するリード端子５の電気接続部
２，封止部３の断面形状を長円あるいは楕円に形成して
もよく、その場合には、前述した一実施例の円形断面に
比べても転がりにくくすることができるので、プリント
配線板に実装し易くなるという利点がある。Although the two embodiments have been described above, the cross-sectional shape of the electrical connection portion 2 and the sealing portion 3 of the insulating container 1 and the lead terminal 5 corresponding thereto may be formed into an ellipse or an ellipse. In this case, it is possible to make it hard to roll compared to the circular cross section of the above-described embodiment, and there is an advantage that it can be easily mounted on a printed wiring board.
【００１９】また、上述したリード端子５の接点リード
片４は、封止部３および電気接続部２に接合または一体
成形して形成してもよく、さらにリード端子５を形成す
る接点リード片４，封止部３および電気接続部２は、金
属磁性体から形成することもできる。Further, the contact lead piece 4 of the lead terminal 5 described above may be formed by joining or integrally molding with the sealing portion 3 and the electrical connecting portion 2, and further the contact lead piece 4 forming the lead terminal 5. The sealing portion 3 and the electrical connecting portion 2 can also be formed from a magnetic metal material.
【００２０】[0020]
【発明の効果】以上説明したように、本発明のリードス
イッチは、絶縁容器の外形寸法とリード端子の電気接続
部の寸法を同じにすることにより、プリント配線板に穴
をあけずに実装できるほか、実装面を多面的にとること
ができるので、リード端子部そのものを硬くすることが
でき、取扱い易く且つ表面実装に耐えるようにできると
いう効果がある。また、本発明はリード端子部を電気接
続部，封止部および接点リード部で形成することによ
り、接点部封入後の端子加工を無くすことができ、加工
工数の削減およびリード端子封入部分の亀裂も無くすこ
とができるという効果がある。As described above, the reed switch of the present invention can be mounted without making a hole on the printed wiring board by making the outer dimensions of the insulating container and the dimensions of the electrical connection portions of the lead terminals the same. In addition, since the mounting surface can be multifaceted, the lead terminal portion itself can be hardened, and there is an effect that it can be handled easily and can withstand surface mounting. Further, according to the present invention, by forming the lead terminal portion with the electric connection portion, the sealing portion and the contact lead portion, it is possible to eliminate the terminal processing after enclosing the contact portion, reducing the processing man-hour and cracking the lead terminal enclosing portion. There is an effect that it can be eliminated.
【図１】本発明の一実施例を示すリードスイッチの平面
およびＡ−Ａ断面を表わす図である。FIG. 1 is a diagram showing a plane and an AA cross section of a reed switch showing an embodiment of the present invention.
【図２】図１に示すリードスイッチの配線板への実装状
態の正面および側面を表わす図である。2A and 2B are front and side views showing a mounted state of the reed switch shown in FIG. 1 on a wiring board.
【図３】本発明の他の実施例を示すリードスイッチの平
面およびＢ−Ｂ断面を表わす図である。FIG. 3 is a diagram showing a plan view and a BB cross section of a reed switch according to another embodiment of the present invention.
【図４】従来の一例を示すリードスイッチの平面および
正面を表わす図である。FIG. 4 is a diagram showing a plan view and a front face of a reed switch showing an example of the related art.
【図５】図４に示すリードスイッチの配線板への実装状
態を表わす断面図である。5 is a cross-sectional view showing a mounted state of the reed switch shown in FIG. 4 on a wiring board.
１ 絶縁容器 ２ 電気接続部 ３ 封止部 ４ 接点リード部 ５ リード端子 ６ 接合部 1 Insulation container 2 Electrical connection part 3 Sealing part 4 Contact lead part 5 Lead terminal 6 Joint part
Claims (4)
容器と、導電金属材からなり前記絶縁容器の内径に等し
い径を有するとともに前記絶縁容器の両端部に配置され
る封止部と前記封止部の外側に形成され且つ前記絶縁容
器の外径寸法以上の径を有する電気接続部と金属磁性体
からなり前記封止部の内側に形成されるとともに相互の
先端部を所定の間隔をあけて対向させた接点リード片と
よりなるリード端子とを備え、前記リード端子の前記電
気接続部に半田付けの可能な表面処理を施したことを特
徴とするリードスイッチ。1. An insulating container, such as glass, having the same diameter as a whole, a sealing part made of a conductive metal material, having a diameter equal to the inner diameter of the insulating container, and arranged at both ends of the insulating container. It is formed on the outside of the sealing portion and is formed on the inside of the sealing portion, which is made of an electric connection portion having a diameter equal to or larger than the outer diameter of the insulating container and a metal magnetic body, and the mutual tips are spaced apart by a predetermined distance. A reed switch comprising: a lead terminal formed of contact lead pieces that are opened and opposed to each other, wherein the electrical connection portion of the lead terminal is subjected to surface treatment capable of being soldered.
接続部並びに前記絶縁容器は、その断面形状を円，長
円，楕円，矩形のいずれかに形成した請求項１記載のリ
ードスイッチ。2. The reed switch according to claim 1, wherein the sealing portion of the lead terminal, the electrical connecting portion, and the insulating container have a cross-sectional shape of any one of a circle, an ellipse, an ellipse, and a rectangle.
前記封止部および前記電気接続部に接合または一体成形
してなる請求項１記載のリードスイッチ。3. The contact lead piece of the lead terminal,
The reed switch according to claim 1, wherein the reed switch is joined to or integrally molded with the sealing portion and the electrical connection portion.
記封止部および前記電気接続部は、金属磁性体からなる
請求項１記載のリードスイッチ。4. The reed switch according to claim 1, wherein the contact lead piece of the lead terminal, the sealing portion, and the electrical connecting portion are made of a magnetic metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7133972A JP2738345B2 (en) | 1995-05-31 | 1995-05-31 | Reed switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7133972A JP2738345B2 (en) | 1995-05-31 | 1995-05-31 | Reed switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08329760A true JPH08329760A (en) | 1996-12-13 |
| JP2738345B2 JP2738345B2 (en) | 1998-04-08 |
Family
ID=15117384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7133972A Expired - Lifetime JP2738345B2 (en) | 1995-05-31 | 1995-05-31 | Reed switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2738345B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941557A (en) * | 2017-12-29 | 2018-04-20 | 北京桑德环境工程有限公司 | A kind of column shaped deposit layered sampling device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6360619A (en) * | 1986-08-29 | 1988-03-16 | Murata Mfg Co Ltd | Electronic component with cap |
-
1995
- 1995-05-31 JP JP7133972A patent/JP2738345B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6360619A (en) * | 1986-08-29 | 1988-03-16 | Murata Mfg Co Ltd | Electronic component with cap |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941557A (en) * | 2017-12-29 | 2018-04-20 | 北京桑德环境工程有限公司 | A kind of column shaped deposit layered sampling device |
| CN107941557B (en) * | 2017-12-29 | 2020-07-28 | 北京桑德环境工程有限公司 | Columnar sediment layered sampling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2738345B2 (en) | 1998-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3862870B2 (en) | Electrical components with solderless terminal fittings | |
| US3771101A (en) | Electronic circuit assemblies and method of manufacture | |
| US3315218A (en) | Electrical connector for coaxial cable | |
| US20030181088A1 (en) | Electrical connector | |
| JPH11340001A (en) | Electrical parts unit provided with terminal metal fitting for connecting lead wire | |
| JP2738345B2 (en) | Reed switch | |
| US3747050A (en) | Adaptor | |
| JP3081701B2 (en) | Connection structure of electronic parts, mounting plate of electronic parts, circuit board, and assembled finished product using these | |
| JP2586599Y2 (en) | Impedance element | |
| JP4024103B2 (en) | High-frequency circuit connection structure | |
| JP3686884B2 (en) | Manufacturing method of casing for electronic component | |
| JP2640327B2 (en) | Contact forming method and isometric right angle connector formed using the same | |
| JP4229222B2 (en) | Taping connection terminal | |
| JP2530782Y2 (en) | Coaxial cable connection terminal | |
| JPH054295Y2 (en) | ||
| JP2559104Y2 (en) | Surface mount connector | |
| JP3563200B2 (en) | Electronic components | |
| JP2000268690A (en) | Surface mounted type reed switch | |
| JPH1056250A (en) | Fitting structure of electrical equipment | |
| JPS5918665Y2 (en) | High voltage feedthrough capacitor | |
| JPS61283206A (en) | Manufacture of bead filter device | |
| JPH0418447B2 (en) | ||
| JP2557117Y2 (en) | Coaxial cable connection structure | |
| JPH0743982Y2 (en) | Reed switch mounting structure | |
| JPH04322088A (en) | Surface-mounting-type connector |