JPH097457A - Electric part having terminal - Google Patents
Electric part having terminalInfo
- Publication number
- JPH097457A JPH097457A JP7148951A JP14895195A JPH097457A JP H097457 A JPH097457 A JP H097457A JP 7148951 A JP7148951 A JP 7148951A JP 14895195 A JP14895195 A JP 14895195A JP H097457 A JPH097457 A JP H097457A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- casing
- housing
- side wall
- solder
- 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
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3421—Leaded components
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Multi-Conductor Connections (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プリント基板のはんだ
ランドにはんだ付けされる外部接続用の端子を、合成樹
脂製の筐体の底面縁部から該筐体の側壁に沿って起立さ
せることにより、該端子の該筐体からの突出量を抑えた
端子付き電気部品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to raise a terminal for external connection to be soldered to a solder land of a printed board from a bottom edge of a casing made of a synthetic resin along a side wall of the casing. Thus, the present invention relates to an electric component with a terminal in which the amount of protrusion of the terminal from the housing is suppressed.
【０００２】[0002]
【従来の技術】図３は、この種の端子付き電気部品の従
来例を示す要部断面図である。同図において、符号１１
はウェハ等の筐体、１２は外部接続用の端子であり、こ
の端子１２は、筐体１１内からその底面縁部１１ａへ導
出された金属板に曲げ加工を施してなるもので、基端側
の平坦部１２ａと、筐体１１の側壁１１ｂに沿って起立
する起立部１２ｂとを有する鉤形に形成されている。そ
して、この電気部品をプリント基板１３上に実装する際
には、まずプリント基板１３のはんだランド１４上にク
リームはんだを塗布し、このクリームはんだ上に端子１
２の平坦部１２ａを載せた後、リフロー炉内を通過させ
て赤外線照射を行うことにより、前記クリームはんだを
溶融させて端子１２に付着させる。その結果、図３に示
すように、溶融後のクリームはんだが固化してなるはん
だ層１５によって、端子１２とはんだランド１４とが電
気的且つ機械的に接続されることになる。2. Description of the Related Art FIG. 3 is a cross-sectional view of essential parts showing a conventional example of this type of electric component with a terminal. In FIG.
Is a housing such as a wafer, and 12 is a terminal for external connection. The terminal 12 is formed by bending a metal plate led out from inside the housing 11 to a bottom edge 11a thereof. It is formed in a hook shape having a flat portion 12a on the side and a standing portion 12b that stands up along the side wall 11b of the housing 11. When mounting this electric component on the printed circuit board 13, first, cream solder is applied to the solder lands 14 of the printed circuit board 13 and the terminal 1 is applied on the cream solder.
After mounting the second flat portion 12a, the cream solder is melted and adhered to the terminal 12 by passing through a reflow furnace and irradiating infrared rays. As a result, as shown in FIG. 3, the terminals 12 and the solder lands 14 are electrically and mechanically connected by the solder layer 15 formed by solidifying the cream solder after melting.
【０００３】このように、外部接続用の端子１２を上向
きの鉤形に形成することにより該端子１２の筐体１１か
らの突出量を抑えた電気部品は、端子１２を含む全体の
大きさが小型化できるので、実装密度の向上が図れると
いう利点がある。As described above, the electric component in which the terminal 12 for external connection is formed in a hook shape facing upward so that the protruding amount of the terminal 12 from the housing 11 is suppressed, the entire size including the terminal 12 is small. Since the size can be reduced, there is an advantage that the packaging density can be improved.
【０００４】[0004]
【発明が解決しようとする課題】ところで、この種の電
気部品の外部接続用の端子１２は、その平坦部１２ａを
溶融前のクリームはんだ上に載せてリフロー炉内へ送ら
れ、炉内で加熱されると図３に示すように、起立部１２
ｂの片面にも若干の溶融はんだが付着されるが、該端子
１２の平坦部１２ａが短寸でクリームはんだとの接触面
積が小さく、また起立部１２ｂの片面に付着しうる溶融
はんだもそう多くはないことから、該端子１２のプリン
ト基板１３に対するはんだ付け強度を十分なものにする
ためには、つまり、はんだ層１５による導通の信頼性や
機械的強度に支障をきたさないためには、平坦部１２ａ
の側面１２ｃや上面へも溶融はんだを付着させることが
好ましいとされている。By the way, a terminal 12 for external connection of an electric component of this type has its flat portion 12a placed on a cream solder before melting and is sent to a reflow furnace and heated in the furnace. Then, as shown in FIG.
Although a small amount of molten solder is attached to one surface of b, the flat portion 12a of the terminal 12 is short and has a small contact area with the cream solder, and a large amount of molten solder can be attached to one surface of the rising portion 12b. Therefore, in order to make the soldering strength of the terminal 12 to the printed circuit board 13 sufficient, that is, in order not to hinder the reliability of the conduction and the mechanical strength of the solder layer 15, the flatness is required. Part 12a
It is said that it is preferable to attach the molten solder to the side surface 12c and the upper surface of the.
【０００５】しかしながら、従来品の場合、合成樹脂製
の筐体１１の側壁１１ｂに溶融はんだを遠ざける性質が
ある関係上、図３に示すように、この側壁１１ｂからの
突出量が少ない該端子１２の平坦部１２ａの側面１２ｃ
に溶融はんだを付着させることはほとんどできず、した
がって該平坦部１２ａの上面へ溶融はんだを回り込ませ
ることも困難であり、それゆえ該端子１２とはんだ層１
５との接触面積が不十分で高信頼性が得にくいという問
題があった。However, in the case of the conventional product, due to the property of keeping the molten solder away from the side wall 11b of the housing 11 made of synthetic resin, as shown in FIG. 3, the terminal 12 having a small protrusion amount from the side wall 11b. Side surface 12c of the flat portion 12a of
It is almost impossible to attach the molten solder to the upper surface of the flat portion 12a, and it is difficult to spread the molten solder to the upper surface of the flat portion 12a.
There is a problem that the contact area with 5 is insufficient and it is difficult to obtain high reliability.
【０００６】本発明はかかる従来技術の課題に鑑みてな
されたもので、その目的は、小型化を損なわずに外部接
続用の端子のプリント基板に対するはんだ付け強度を高
めることのできる端子付き電気部品を提供することにあ
る。The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide an electric component with a terminal capable of increasing the soldering strength of a terminal for external connection to a printed circuit board without impairing miniaturization. To provide.
【０００７】[0007]
【課題を解決するための手段】本発明の上述した目的
は、外殻を形成する合成樹脂製の筐体と、この筐体内か
ら該筐体の底面縁部へ導出されて該筐体の側壁に沿って
起立する外部接続用の端子とを備え、この端子がプリン
ト基板のはんだランドにはんだ付けされる電気部品にお
いて、前記筐体の前記側壁に、前記底面縁部に位置する
前記端子の基端部の側面を露出させる切欠を設けること
によって達成される。The above-mentioned object of the present invention is to provide a housing made of synthetic resin forming an outer shell, and a side wall of the housing which is led out from the inside of the housing to a bottom edge portion of the housing. And a terminal for external connection that stands up along the terminal, the terminal being soldered to a solder land of a printed circuit board, in the side wall of the housing, the base of the terminal located at the bottom edge portion. This is accomplished by providing a notch that exposes the sides of the end.
【０００８】[0008]
【作用】上述したように、筐体の側壁に設けた切欠内
に、外部接続用の端子の基端部の側面を露出させてやれ
ば、該端子の筐体からの突出量を増やすことなく、筐体
の側壁の外側ではんだランド上に載置可能な該端子の側
面を長くとることができるので、該側壁からある程度離
れた個所で該端子の側面に溶融はんだが付着しやすくな
るとともに、該端子の上面へも溶融はんだが回り込みや
すくなって、はんだ接触面積を大幅に増大させることが
できる。As described above, if the side surface of the base end portion of the external connection terminal is exposed in the notch provided in the side wall of the housing, the amount of protrusion of the terminal from the housing is not increased. Since the side surface of the terminal that can be placed on the solder land outside the side wall of the housing can be long, the molten solder easily adheres to the side surface of the terminal at a position apart from the side wall to some extent, The molten solder easily spreads over the upper surfaces of the terminals, and the solder contact area can be greatly increased.
【０００９】[0009]
【実施例】以下、本発明の一実施例を図１および図２に
基づいて説明する。ここで、図１は本実施例の要部斜視
図、図２は図１に示すウェハを備えたスイッチ装置の全
体構成図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Here, FIG. 1 is a perspective view of an essential part of this embodiment, and FIG. 2 is an overall configuration diagram of a switch device including the wafer shown in FIG.
【００１０】これらの図に示すスイッチ装置は、端子群
である第１の固定接点端子１、第２の固定接点端子２、
コモン接点端子３および外部接続端子４と、これらの端
子群１〜４を一体にモールドしてなるウェハの本体部分
で外殻を形成している合成樹脂製の筐体５と、操作部６
ａや回動軸６ｂを有して筐体５内に回動可能に組み込ま
れた合成樹脂製のレバー６と、クリップ状の接点部７ａ
および湾曲した板ばね状の摺動部７ｂを有しレバー６に
取着された可動接点７と、レバー６を戻し方向（図２の
時計回り方向）へ常時付勢する捩りコイルばね８と、筐
体５を蓋閉して捩りコイルばね８を上から押えつけてい
るカバー９とによって概略構成されており、レバー６の
回動に伴って、可動接点７の接点部７ａが第１もしくは
第２の固定接点端子１，２と接離し、且つ摺動部７ｂが
コモン接点端子３に対して摺動するようになっている。The switch device shown in these figures has a first fixed contact terminal 1, a second fixed contact terminal 2, which is a terminal group,
A common contact terminal 3 and an external connection terminal 4, a casing 5 made of synthetic resin forming an outer shell with a main body of a wafer formed by integrally molding these terminal groups 1 to 4, and an operating portion 6.
a, a lever 6 made of synthetic resin rotatably incorporated in the housing 5 having a and a rotating shaft 6b, and a clip-shaped contact portion 7a.
And a movable contact 7 having a curved leaf spring-shaped sliding portion 7b attached to the lever 6, and a torsion coil spring 8 for constantly urging the lever 6 in the returning direction (clockwise direction in FIG. 2), The cover 5 closes the housing 5 and presses the torsion coil spring 8 from above. The cover 9 covers the housing 5, and as the lever 6 rotates, the contact portion 7a of the movable contact 7 is either the first or the first. The two fixed contact terminals 1 and 2 are brought into contact with and separated from each other, and the sliding portion 7b slides with respect to the common contact terminal 3.
【００１１】すなわち、このスイッチ装置は、レバー６
の操作部６ａに対して下方への負荷が加わっていないと
きには、捩りコイルばね８の付勢力で該レバー６が図２
の状態に保たれるので、可動接点７の接点部７ａが第１
の固定接点端子１に接触しており、よって可動接点７を
介して第１の固定接点端子１とコモン接点端子３とを導
通せしめた回路が形成されることになる。また、この状
態で操作部６ａに対して下方への負荷が加わり、捩りコ
イルばね８の付勢力に抗してレバー６が図２の反時計回
り方向へ回転すると、接点部７ａが第１の固定接点端子
１から離れて第２の固定接点端子２に接触するので、可
動接点７を介して第２の固定接点端子２とコモン接点端
子３とを導通せしめた回路への切換えが行われることに
なる。したがって、この回路切換えから、接点部７ａに
対する負荷の有無を検出することが可能となる。That is, this switch device has a lever 6
When no downward load is applied to the operating portion 6a of the lever 6, the lever 6 is moved by the urging force of the torsion coil spring 8.
Therefore, the contact portion 7a of the movable contact 7 is
Therefore, a circuit in which the first fixed contact terminal 1 and the common contact terminal 3 are electrically connected via the movable contact 7 is formed. Further, in this state, a downward load is applied to the operation portion 6a, and when the lever 6 rotates counterclockwise in FIG. 2 against the biasing force of the torsion coil spring 8, the contact portion 7a moves to the first position. Since the second fixed contact terminal 2 is separated from the fixed contact terminal 1 and comes into contact with the second fixed contact terminal 2, it is necessary to switch to the circuit in which the second fixed contact terminal 2 and the common contact terminal 3 are electrically connected via the movable contact 7. become. Therefore, it is possible to detect the presence or absence of a load on the contact portion 7a from this circuit switching.
【００１２】ところで、かかるスイッチ装置は、第１お
よび第２の固定接点端子１，２とコモン接点端子３とか
ら筐体５の底面縁部５ａへ導出した金属板に曲げ加工を
施してなる複数の外部接続端子４を、図１に示すように
プリント基板１３のはんだランド１４にはんだ付けする
ことにより面実装される電気部品であって、この外部接
続端子４は、基端側の平坦部４ａと、筐体５の側壁５ｂ
に沿って起立する起立部４ｂとを有する鉤形に形成され
ている。つまり、このスイッチ装置をプリント基板１３
上に実装する際には、まずプリント基板１３のはんだラ
ンド１４上にクリームはんだを塗布し、このクリームは
んだ上に外部接続端子４の平坦部４ａを載せた後、リフ
ロー炉内を通過させて該クリームはんだを溶融させ、溶
融後のクリームはんだが固化してなるはんだ層１５によ
って、外部接続端子４とはんだランド１４とを電気的且
つ機械的に接続する。By the way, in such a switch device, a plurality of metal plates, which are led out from the first and second fixed contact terminals 1 and 2 and the common contact terminal 3 to the bottom edge 5a of the housing 5, are bent. The external connection terminal 4 is surface-mounted by soldering the external connection terminal 4 to the solder land 14 of the printed board 13 as shown in FIG. 1, and the external connection terminal 4 has a flat portion 4a on the base end side. And the side wall 5b of the housing 5
Is formed in a hook shape having a standing portion 4b standing upright along. That is, this switch device is connected to the printed board
When mounting on top, first, cream solder is applied on the solder lands 14 of the printed circuit board 13, the flat portion 4a of the external connection terminal 4 is placed on the cream solder, and then the solder paste is passed through a reflow oven to remove the flat portion 4a. The external connection terminal 4 and the solder land 14 are electrically and mechanically connected by the solder layer 15 formed by melting the cream solder and solidifying the melted cream solder.
【００１３】そして本実施例では、外部接続端子４をは
んだ付けする際の信頼性を向上させるため、筐体５の側
壁５ｂで該端子４と対向する個所を挟む両側にそれぞれ
切欠５ｃを設け、この切欠５ｃ内に、底面縁部５ａに位
置する該端子４の基端部の側面４ｃが露出させてある。
すなわち、このような切欠５ｃを設けることにより、外
部接続端子４の筐体５からの突出量を増やすことなく、
筐体５の側壁５ｂの外側ではんだランド１４上に載置可
能な該端子４の平坦部４ａの側面４ｃを長くとることが
できるので、図１に示すように、切欠５ｃ内の側壁５ｂ
が溶融はんだを遠ざけても、該側壁５ｂからある程度離
れた個所では該平坦部４ａの側面４ｃに溶融はんだが付
着しやすくなり、そのため該平坦部４ａの上面へも溶融
はんだが回り込みやすくなって、はんだ接触面積を大幅
に増大させることができる。したがって、このスイッチ
装置は、外部接続端子４の筐体５からの突出量を抑えて
高密度実装に好適な小型化を図りつつ、該端子４がプリ
ント基板１３のはんだランド１４に確実にはんだ付けで
きるようになっていて、実装後の導通信頼性や機械的強
度が従来品に比して大幅に向上している。In this embodiment, in order to improve the reliability when soldering the external connection terminals 4, notches 5c are provided on both sides of the side wall 5b of the housing 5 sandwiching a portion facing the terminals 4, respectively. Inside the notch 5c, the side surface 4c of the base end portion of the terminal 4 located at the bottom edge 5a is exposed.
That is, by providing such a cutout 5c, the amount of protrusion of the external connection terminal 4 from the housing 5 is not increased,
Since the side surface 4c of the flat portion 4a of the terminal 4 which can be placed on the solder land 14 outside the side wall 5b of the housing 5 can be made long, as shown in FIG.
Even if the molten solder is moved away from the side wall 5b, the molten solder is likely to adhere to the side surface 4c of the flat portion 4a at a position apart from the side wall 5b to some extent, so that the molten solder is easily spread around the upper surface of the flat portion 4a. The solder contact area can be greatly increased. Therefore, in this switch device, the amount of protrusion of the external connection terminal 4 from the housing 5 is suppressed, and the size suitable for high-density mounting is achieved, while the terminal 4 is reliably soldered to the solder land 14 of the printed circuit board 13. It is possible to do so, and the continuity reliability and mechanical strength after mounting are greatly improved compared with the conventional products.
【００１４】なお、本発明がスイッチ装置以外の電気部
品にも適用できることは言うまでもない。Needless to say, the present invention can be applied to electric parts other than the switch device.
【００１５】[0015]
【発明の効果】以上説明したように、本発明による端子
付き電気部品は、合成樹脂製の筐体の側壁に、その底面
縁部に位置する外部接続用の端子の基端部の側面を露出
させる切欠が設けてあるので、該端子の筐体からの突出
量を増やすことなく、筐体の側壁の外側ではんだランド
上に載置可能な該端子の側面を長くとることができ、よ
って該側壁からある程度離れた個所で該端子の側面に溶
融はんだが付着しやすくなるとともに、該端子の上面へ
も溶融はんだが回り込みやすくなって、はんだ接触面積
が大幅に増大し、その結果、電気部品の小型化を損なう
ことなく、外部接続用の端子のプリント基板に対するは
んだ付け強度を高めることができるという優れた効果を
奏する。As described above, in the electric component with terminal according to the present invention, the side surface of the base end portion of the terminal for external connection located at the bottom edge of the housing is exposed on the side wall of the housing made of synthetic resin. Since the notch is provided, the side surface of the terminal that can be placed on the solder land outside the side wall of the housing can be made long without increasing the amount of protrusion of the terminal from the housing. The molten solder is likely to adhere to the side surface of the terminal at a position apart from the side wall to some extent, and the molten solder is more likely to spread to the upper surface of the terminal, resulting in a large increase in the solder contact area. This has an excellent effect that the soldering strength of the terminal for external connection to the printed circuit board can be increased without impairing the miniaturization.
【図１】本実施例の要部斜視図である。FIG. 1 is a perspective view of a main part of this embodiment.
【図２】図１に示すウェハを備えたスイッチ装置の全体
構成図である。2 is an overall configuration diagram of a switch device including the wafer shown in FIG.
【図３】従来例を示す要部斜視図である。FIG. 3 is a perspective view of a main part showing a conventional example.
４ 外部接続端子 ４ａ 平坦部 ４ｂ 起立部 ４ｃ 側面 ５ 筐体 ５ａ 底面縁部 ５ｂ 側壁 ５ｃ 切欠 １３ プリント基板 １４ はんだランド １５ はんだ層 4 External Connection Terminals 4a Flat Part 4b Standing Part 4c Side 5 Housing 5a Bottom Edge 5b Sidewall 5c Notch 13 Printed Circuit Board 14 Solder Land 15 Solder Layer
Claims (1)
の筐体内から該筐体の底面縁部へ導出されて該筐体の側
壁に沿って起立する外部接続用の端子とを備え、この端
子がプリント基板のはんだランドにはんだ付けされる電
気部品であって、前記筐体の前記側壁に、前記底面縁部
に位置する前記端子の基端部の側面を露出させる切欠を
設けたことを特徴とする端子付き電気部品。1. A housing made of synthetic resin, which forms an outer shell, and a terminal for external connection, which is led out from the inside of the housing to a bottom edge portion of the housing and stands up along a side wall of the housing. The terminal is an electric component to be soldered to a solder land of a printed circuit board, the side wall of the casing is provided with a notch exposing a side surface of a base end portion of the terminal located at the bottom edge portion. Electrical parts with terminals characterized by
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14895195A JP3163316B2 (en) | 1995-06-15 | 1995-06-15 | Electrical parts with terminals |
| TW085104136A TW444523B (en) | 1995-06-15 | 1996-04-09 | Switch apparatus and mounting structure of switch apparatus |
| TW088100273A TW404151B (en) | 1995-06-15 | 1996-04-09 | Switch apparatus |
| MYPI96002379A MY126630A (en) | 1995-06-15 | 1996-06-12 | Switch apparatus |
| CN96106603A CN1039952C (en) | 1995-06-15 | 1996-06-14 | Switch apparatus |
| FR9607413A FR2735608B1 (en) | 1995-06-15 | 1996-06-14 | SWITCH APPARATUS APPLICABLE TO A HOOK SWITCH OR THE LIKE |
| IT96MI001221A IT1284022B1 (en) | 1995-06-15 | 1996-06-14 | SWITCH |
| DE19623802A DE19623802C2 (en) | 1995-06-15 | 1996-06-14 | Switch device |
| KR1019960022440A KR100230525B1 (en) | 1995-06-15 | 1996-06-15 | Switch device |
| FR9611848A FR2737804B1 (en) | 1995-06-15 | 1996-09-30 | SWITCH APPARATUS APPLICABLE TO A HOOK SWITCH OR THE LIKE |
| CN98100305A CN1069146C (en) | 1995-06-15 | 1998-01-05 | Electric Component part with terminal and mounting structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14895195A JP3163316B2 (en) | 1995-06-15 | 1995-06-15 | Electrical parts with terminals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH097457A true JPH097457A (en) | 1997-01-10 |
| JP3163316B2 JP3163316B2 (en) | 2001-05-08 |
Family
ID=15464309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14895195A Expired - Fee Related JP3163316B2 (en) | 1995-06-15 | 1995-06-15 | Electrical parts with terminals |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3163316B2 (en) |
-
1995
- 1995-06-15 JP JP14895195A patent/JP3163316B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3163316B2 (en) | 2001-05-08 |
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