JP4236393B2

JP4236393B2 - Electrical connector

Info

Publication number: JP4236393B2
Application number: JP2001139680A
Authority: JP
Inventors: 智也大槻; 靖恵山崎
Original assignee: Fujikura Ltd
Current assignee: Fujikura Ltd
Priority date: 2001-05-10
Filing date: 2001-05-10
Publication date: 2009-03-11
Anticipated expiration: 2021-05-10
Also published as: JP2002343465A

Description

【０００１】
【発明の属する技術分野】
本発明は相対向する第１相手物と第２相手物とを接続する電気コネクタであって、支持部材と、第１相手物と接触する複数個の第１電気接触子を有するとともに前記支持部材の一方の表面上に配置された第１回路と、第２相手物と接触する第２電気接触子を有するとともに前記支持部材の他方の表面に配置された第２回路と、前記第１回路及び第２回路を接続する導体とを具えてなる電気コネクタに関するものであり、また特に、コネクタの性能の検査を行うため、繰り返して接触が行われる電気コネクタの第１電気接触子に付着する相手電気接点のはんだを除去し得る電気コネクタに関するものである。
【０００２】
【従来の技術】
例えば、はんだ等の球状突起から成る複数個の電気接点を有するＢＧＡ(Ball Grid Array) コネクタの性能を検査するため、このコネクタに着脱するソケットコネクタ（ＢＧＡ素子に接触するソケットコネクタ）を使用することが行われている。このソケットコネクタはＢＧＡコネクタに対して、数千回の接触を行うため、ソケットコネクタの電気接触子に、ＢＧＡコネクタの電気接点のはんだが付着し易く、接触不良の原因になることがある。
【０００３】
ソケットコネクタの電気接触子にはんだが付着するので、接触回数が数百回、もしくは数千回に一度、付着したはんだをブラシ等で落とす必要があるが、付着したはんだをブラシで除去するのは困難である。また、早めにブラシを使用すれば、或る程度は付着したはんだの除去は容易になるが、ブラシを使用する回数があまり頻繁になると、工数が増大し、コストが増大する恐れがある。
【０００４】
米国特許第5984691 号には、電気コネクタの電気接触子の表面を鋸歯状構造( 「樹枝状構造(dentritic structure)」）にした電気接触子を開示しているが、その記載によれば、針状掛合(needle-like engagement)によって、電気的接続を良好にするために過ぎない。
【０００５】
また、この米国特許第5984691 号には、中心の支持部材の上下に孔付き支持部材を配置し、更にその上下の外側に導体、即ち電気接触子を支持する上下の可撓性回路基材を配置し、導体、即ち電気接触子に力が加わった時には、電気接触子を支持している回路基材がそれに隣接する孔付き支持部材の孔の中に沈み込むようにした構成を開示している。その前文には、導電エラストーマ素子に力が加わると、固有抵抗が変化してしまうこと、可撓性回路部材に周期的応力が加わると、回路ラインの寿命を短くし、接続に故障を生ずること、システムの種々の構成部分に圧縮性がないと、製造公差に適応できないこと等を論じており、これ等に対応するために、特に弾性的な支持部材を提案しており、この提案する構成は電気接触子に付着したはんだを除去するものでない。
【０００６】
また、この米国特許第5984691 号の構造はその図１から明らかなように、上下の接点が同一の形状になっている。しかし、接点が接触する相手接点の形状や、相手コネクタの使用目的によって、上下の接点の形状を変え、接点の最適化を図る必要がある。
【０００７】
更に、製作に当たっては、測定に都合のよい伝送路としての特性を配慮したマイクロストリップラインの検討が必要になるが、実際上、マイクロストリップラインの検討は面倒である。
【０００８】
【発明が解決しようとする課題】
本発明の目的は上述の従来の技術の問題点を解決し、電気コネクタの両側の接点の最適化を図り、両側の接点を異なる形状にし、また、ＢＧＡチップにおいて、繰り返し接触を行っても、第１電気接触子にはんだが付着することなく、従って、接触抵抗の測定が不安定になることがなく、安定した接続が得られ、更に、伝送路の特性を配慮したマイクロストリップラインの検討が不必要な電気コネクタを得るにある。
【０００９】
【課題を解決するための手段】
この目的を達成するため、本発明の電気コネクタは、相対向する第１相手物と第２相手物とを接続する電気コネクタであって、支持部材と、該支持部材上に、第１相手物と接触し、片持梁によって支持される複数個の第１電気接触子を有するとともに前記支持部材の一方の表面上に配置された第１回路と、第２相手物と接触する第２電気接触子を有するとともに前記支持部材の他方の表面に配置された第２回路と、前記第１回路及び第２回路を接続する導体とを具え、前記第１電気接触子が、第１相手物の電気接点に接触し、押圧されて下方に前記支持部材が撓むことで、前記第１電気接触子上を前記第１相手物の電気接点が摺動し、この摺動方向に、ほぼ平行になるよう、前記第１電気接触子の表面に少なくとも１個の三角波状突起を設け、前記第１回路の第１電気接触子と前記第２回路の第２電気接触子とを接触相手の形状に沿って最適化し、前記第１相手物の電気接点の摺動方向に平行な複数本のスリットを形成した保護被覆層を、前記第１回路上の全面に設け、前記三角波状突起は、前記スリット上に前記保護被覆層の表面よりも高く突出するように形成しためっきからなることを特徴とする。
【００１０】
ここでいう最適化とは、第一相手物と第二相手物の接点形状によって、第一相手物と接触する第１電気接触子と第二相手物と接触する第２電気接触子の形状を変えることをいう。例えば、相手物がＢＧＡチップの場合、三角波状突起にするし、相手物が基板パッドのように平坦な場合は、球状突起にするといったものである。
【００１１】
【発明の実施の形態】
第１相手物と接触する第１電気接触子はその表面の三角波状突起と共に、めっきによって一体に形成されているのが好適である。
【００１２】
第１相手物と接触する第１電気接触子の周りに密接して、支持部材に貫通するＵ字状のスリットを支持部材に形成するのが好適である。弾性変形可能な軟質樹脂で支持部材を構成する。エラストーマ樹脂材料と、金属ばねとの複合体で支持部材を構成することもできる。
【００１３】
支持部材を複数個の支持部材で構成し、これ等の支持部材間に間隙を設けて、支持部材全体の変形が一層容易になるようにすることもできる。第１回路、及び第２回路を設けた支持部材の表面にほぼ平行に、又はほぼ直角に、少なくとも１個の孔を支持部材に設け、支持部材の変形が一層容易になるようにしてもよい。
【００１４】
添付図面を参照して本発明の実施例を説明する。
【実施例】
図１に本発明の一実施例の電気コネクタ２０を示す。図１の電気コネクタ２０の上方にある第１相手物であるコネクタ１０はその性能の検査を受けるコネクタであって、セラミックスや剛性のある硬質樹脂基板１２の片面上に、はんだ等の球状突起から成る複数個の電気接点１４を有する。電気接点１４のはんだは通常のはんだ用元素である鉛と錫の他に、銀、アンチモン等を加えた電気接点として良好なものが使用されている。
【００１５】
本発明の電気コネクタ２０は基板、即ち支持部材２１を具え、コネクタ１０の方向に向くこの支持部材２１の表面には、第１回路２２を形成している。例えば、この支持部材２１の表面上に、予め銅箔などの金属層を設け、例えば、基板製造技術の一つであるプリント配線パターン成形法によって、この金属層を処理し、必要な導体から成る第１回路２２を形成する。第１回路２２に接続するリード線２４の部分も同様に、プリント配線パターン成形法によって形成することができる。第１回路２２を形成する導体の材料としては、導電性の良好な黄銅、ベリリウム銅、りん青銅などが使用される。
【００１６】
第１回路２２に、ＢＡＧチップの前記電気接点と接触する導電性の良好な材料から成る複数個の第１電気接触子２６を設ける。これ等の第１電気接触子と電気接点間の導通距離は５ｍｍ未満である。この第１電気接触子２６は性能検査を受けるコネクタ１０の電気接点１４に接触する。第１電気接触子２６は第１回路２２にめっき等によって設ける。第１電気接触子２６の構造については、図３、及び図４を参照して、後に説明する。また、この支持部材２１の表面上の第１電気接触子２６を除く部分には、第１回路２２、及びリード線２４を保護するため、合成樹脂などから成る保護被覆層２８を設ける。
【００１７】
電気コネクタ２０の第１回路２２の反対側には、必要な導体から成る第２回路３０を設けるが、第２回路の導体材料、及び形成法は第１回路２２とほぼ同様である。この第２回路３０に基板４０のパッド４２と接触する半球状の複数個の第２電気接触子３２を設ける。この第２電気接触子３２は金、ニッケル、銅等のそれぞれの合金が使用される。図面から明らかなように、目的に応じて、ＢＡＧチップの電気接点１４と接触する第１電気接触子２６と、基板４０のパッド４２と接触する第２電気接触子３２の形状は相違している。
第１回路２２と第２回路３０とを接続する導体３４を設ける。導体３４は通常のリード線、金属箔などを使用することができる。
図１の電気コネクタ２０の下方に示した第２相手物である基板４０には第２電気接触子３２が接触するための金めっきを施したパッド４２を設ける。
【００１８】
本発明においては、性能検査を受ける第１相手物であるコネクタ１０の電気接点１４に接触する際に、第１電気接触子２６に付着するはんだを除去するため、電気コネクタ２０の第１電気接触子２６の表面に少なくとも１個の三角波状突起３６を設け、三角波状突起３６の先端をある程度、鋭くする。
この三角波状突起３６の突出量としては0.1 〜0.2 mm程度あれば十分である。三角波状突起３６の数としては、コネクタ１０の電気接点１４と、電気コネクタ２０の電気第１接触子２６との位置のずれを考慮し、複数個あるのが望ましい。複数個の三角波状突起を設けると、第１電気接触子２６の表面は波状になる。
【００１９】
性能検査を受ける第１相手物であるコネクタ１０を電気コネクタ２０に押し付けて、コネクタ１０の電気接点１４をコネクタ２０の第１電気接触子２６に接触させた時、電気コネクタ２０の支持部材２１、少なくとも第１電気接触子２６を支持する部分が弾性変形をし、下方に撓む。この撓むことによって、コネクタ１０の電気接点が電気コネクタ２０の第１電気接触子２６上を摺動するから、第１電気接触子２６の表面に付着したはんだを除去することができる。
【００２０】
電気コネクタ２０が撓むことにより、付着したはんだを除去する原理を図２に付き説明する。
コネクタ１０の電気接点１４は一定の力で電気コネクタ２０に押し付けられ、コネクタ１０の電気接点１４は図２の位置Ｘで電気コネクタ２０の第１電気接触子２６に接触する。その後、一定の力で押し付けられると、電気コネクタ２０の第１電気接触子２６は図２のＯ点を支点にして、下方に変位するため、第１電気接触子２６の接触点ＸはＸ′に移動する。しかし、コネクタ１０はソケット構造で案内されているので、水平方向には移動できず、垂直方向に移動し、コネクタ１０の電気接点１４は図２のＹ点で電気コネクタ２０の第１電気接触子２６に接触する。従って、コネクタ１０の電気接点１４は電気コネクタ２０の第１電気接触子２６上をＸ′点からＹ点まで、一定の力で押し付けられながら移動、即ち摺動することになり、第１電気接触子２６の表面に付着したはんだを除去することができる。
【００２１】
次に、図３、及び図４を参照し、電気コネクタ２０の細長い三角波状突起３６を有する第１電気接触子２６の形成方法について説明する。
保護被覆層２８は最初は第１回路２２上に全面に設けられている。第１電気接触子２６を設ける位置に、図３に示すように、スリット５０を上述の電気接点１４の摺動方向に平行に設ける。このスリット５０はレーザ加工などで形成する。
次に、図４に示すように、スリット５０に、徐々にメッキを施し、まずスリットの中にめっきを行い、更に保護被覆層２８の表面より高くめっきを突出させ、第１電気接触子２６の本体部分を含む三角波状突起３６を形成する。
なお、図４は図１の断面の平面に対し、垂直な断面に沿う断面図である。
【００２２】
次に、電気コネクタ２０の基板、即ち支持部材２１を説明する。
上述のように電気コネクタ２０の第１電気接触子２６に接触するコネクタ１０の電気接点１４が第１電気接触子２６上を摺動するために、電気コネクタ２０の支持部材２１が弾性変形可能であることが必要であり、適度の剛性を有する軟質樹脂で造るのが好適であり、弾性に富むエラストーマ樹脂材料で構成する。しかし、樹脂に限定されず、エラストーマ樹脂材料と金属ばねとの複合体などで構成することもできる。
【００２３】
本発明の他の実施例では、図１、及び図５に符号５２によって示すように、基材、即ち支持部材２１に第１電気接触子２６を包囲するように、Ｕ字状のスリット５２を設ける。これにより、各第１電気接触子２６がＵ字状の片持梁によって支持されるから、第１電気接触子２６にコネクタ１０の電気接点１４が接触して、第１電気接触子２６を押圧する時、第１電気接触子２６は押圧される方向に移動し、上述のように、第１電気接触子２６上のコネクタ１０の電気接点１４の摺動が生ずる。
【００２４】
また、図６に示す本発明の他の実施例では、支持部材２１を例えば樹脂材料の支持部材５３、５４、５５で構成し、これ等支持部材の間に間隙５６を設け、支持部材２１の弾性を増大してもよい。又は一体の支持部材２１に少なくとも１個の孔５６を設け、支持部材２１の弾性を増大してもよい。或いは、表面にほぼ垂直な少なくとも１個の孔５８を上下の支持部材５３、５５に設け、支持部材の変形を容易にしてもよい。
【００２５】
図１の導体３４を設けるに当たり、導体線を所定の間隔で張り、導体線を張った空間に液状シリコンを注入して成形する。次に導体線に直交する側から所定の厚さにスライスし、スライスした面をレーザによりエッチング加工し、シリコンの表面から導体を突出させる。次に第１回路、及び第２回路の各電気接触子、及び電気接点から延びる金属導体に設けた孔に、上記のシリコンの表面から突出する導体を嵌合する。その後、ペーストはんだを塗布し、リフローにより接続固定する。
【００２６】
【発明の効果】
本発明電気コネクタは次のような顕著な効果を有する。
（１）本発明の電気コネクタは一方の表面の接点は少なくとも１個の細長い三角波状突起を有する第１電気接触子であり、他方の表面の接点はこれと異なる形状の球状突出接点であり、使用目的に合わせて、接点の最適化を達成している。
（２）本発明の電気コネクタは第１電気接触子の表面に、相手電気接点の摺動方向に平行な少なくとも１個の細長い三角波状突起を設けているので、ＢＧＡチップの繰り返し接触を行う際、相手電気接点のはんだが第１電気接触子に付着することがなく、はんだの付着により、接触抵抗の測定が不安定になることがなく、安定した接続を行うことができる。
（３）本発明の電気コネクタは上述のように第１電気接触子に相手電気接点のはんだが付着しないから、ブラシによるはんだの除去作業が不要であり、作業効率が増大する。また、ブラシによる除去作用による効率低下もない。
（４）本発明の電気コネクタは接点間の導通距離を５mm未満にしているので、測定検査の際に、特別な考慮は不必要で、伝送路としての特性を配慮したマイクロストリップラインの検討が不要となり、コストの低減に貢献する。
【図面の簡単な説明】
【図１】性能検査を受けるコネクタと共に示す本発明の電気コネクタの断面図である。
【図２】本発明の電気コネクタの第１電気接触子上に相手接点が摺動することにより、第１電気接触子に付着しためっきを除去する原理を説明する図である。
【図３】本発明の電気コネクタの第１電気接触子に細長い突起を形成する一工程を示す平面図である。
【図４】本発明の電気コネクタの突起を有する第１電気接触子の断面図である。
【図５】第１電気接触子の周りにＵ字状のスリットを設けた本発明の電気コネクタの平面図である。
【図６】本発明の電気コネクタの支持部材の他の変形を示す断面図である。
【符号の説明】
１０コネクタ
１２基板
１４電気接点
２０電気コネクタ
２１支持部材
２２第１回路
２４リード線
２６第１電気接触子
２８保護被覆層
３０第２回路
３２第２電気接触子
３４導体
３６三角波状突起
４０基板
４２パッド
５２スリット
５３、５４、５５支持部材
５６間隙、孔
５８孔[0001]
BACKGROUND OF THE INVENTION
The present invention is an electrical connector for connecting a first counterpart and a second counterpart facing each other, and includes a support member and a plurality of first electrical contacts that contact the first counterpart and the support member. A second circuit disposed on the other surface of the support member and having a second electrical contact that contacts the second counterpart, the first circuit, The present invention relates to an electrical connector comprising a conductor for connecting a second circuit, and in particular, the mating electrical power attached to the first electrical contact of the electrical connector that is repeatedly contacted in order to inspect the performance of the connector . The present invention relates to an electrical connector capable of removing contact solder.
[0002]
[Prior art]
For example, in order to inspect the performance of a BGA (Ball Grid Array) connector having a plurality of electrical contacts made of spherical protrusions such as solder, use a socket connector (socket connector that contacts a BGA element) to be attached to and detached from this connector. Has been done. Since this socket connector makes contact with the BGA connector thousands of times, the solder of the electrical contact of the BGA connector is likely to adhere to the electrical contact of the socket connector, which may cause poor contact.
[0003]
Since the solder adheres to the electrical contacts of the socket connector, it is necessary to remove the adhered solder with a brush etc. once every few hundreds or thousands of times. Have difficulty. Further, if the brush is used early, it is easy to remove the attached solder to some extent, but if the frequency of using the brush becomes too frequent, the man-hour increases and the cost may increase.
[0004]
U.S. Pat. No. 5,984,691 discloses an electrical contact in which the surface of the electrical contact of the electrical connector has a serrated structure ("dentritic structure"). It is only to improve the electrical connection by needle-like engagement.
[0005]
Further, in US Pat. No. 5,984,691, a support member with a hole is disposed above and below a central support member, and upper and lower flexible circuit substrates that support conductors, that is, electric contacts, are further provided on the upper and lower sides thereof. Disclosed is a configuration in which when a conductor is applied to a conductor, that is, an electric contact, a circuit substrate supporting the electric contact sinks into a hole of a support member with a hole adjacent thereto. Yes. The preface states that if a force is applied to the conductive elastomer element, the specific resistance will change, and if a cyclic stress is applied to the flexible circuit member, the life of the circuit line will be shortened and the connection will fail. In addition, it discusses that various components of the system cannot be adapted to manufacturing tolerances if they are not compressible, and in order to cope with these, a particularly elastic support member has been proposed. Does not remove the solder attached to the electrical contacts.
[0006]
Further, as is apparent from FIG. 1 of the structure of US Pat. No. 5,984,691, upper and lower contacts have the same shape. However, it is necessary to optimize the contacts by changing the shapes of the upper and lower contacts depending on the shape of the mating contact with which the contacts contact and the purpose of use of the mating connector.
[0007]
Further, in the production, it is necessary to study a microstrip line in consideration of the characteristics as a transmission line convenient for measurement, but in practice, the microstrip line is troublesome.
[0008]
[Problems to be solved by the invention]
The object of the present invention is to solve the above-mentioned problems of the prior art, to optimize the contacts on both sides of the electrical connector, to make the contacts on both sides different shapes, and even with repeated contact in the BGA chip, There is no adhesion of solder to the first electrical contact, so contact resistance measurement does not become unstable, stable connection is obtained, and further, a microstrip line considering the characteristics of the transmission line has been studied. There is an unnecessary electrical connector.
[0009]
[Means for Solving the Problems]
In order to achieve this object, an electrical connector according to the present invention is an electrical connector for connecting a first counterpart and a second counterpart facing each other, and includes a support member, and a first counterpart on the support member. A first circuit disposed on one surface of the support member and a second electrical contact in contact with a second counterpart. A second circuit disposed on the other surface of the support member, and a conductor connecting the first circuit and the second circuit, wherein the first electrical contact is an electrical contact of the first counterpart. When the contact member contacts and is pressed and the support member bends downward, the electrical contact of the first counterpart slides on the first electrical contact and is substantially parallel to the sliding direction. And providing at least one triangular wave protrusion on the surface of the first electrical contact Wherein the first electrical contacts of the first circuit and a second electrical contact of the second circuit optimized along the shape of the contact partner, the plurality of parallel to the sliding direction of the electrical contacts of the first mating object A protective coating layer having slits formed thereon is provided on the entire surface of the first circuit, and the triangular wave-shaped protrusions are made of plating formed on the slits so as to protrude higher than the surface of the protective coating layer. Features.
[0010]
Optimization here means the shape of the first electrical contact that contacts the first counterpart and the shape of the second electrical contact that contacts the second counterpart, depending on the contact shape of the first counterpart and the second counterpart. It means changing. For example, when the counterpart is a BGA chip, it is a triangular wave projection, and when the counterpart is flat like a substrate pad, it is a spherical projection.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
First electrical contact in contact with the first mating was with triangular protrusions of the surface, it is preferable that are integrally formed by plating.
[0012]
It is preferable that a U-shaped slit penetrating the support member is formed in the support member in close contact with the first electrical contact that contacts the first counterpart. The support member is made of an elastically deformable soft resin. The support member can also be composed of a composite of an elastoma resin material and a metal spring.
[0013]
The support member may be composed of a plurality of support members, and a gap may be provided between the support members so that the entire support member can be more easily deformed. The support member may be provided with at least one hole substantially parallel to or substantially perpendicular to the surface of the support member provided with the first circuit and the second circuit so that the support member can be more easily deformed. .
[0014]
Embodiments of the present invention will be described with reference to the accompanying drawings.
【Example】
FIG. 1 shows an electrical connector 20 according to an embodiment of the present invention. A connector 10 that is a first counterpart above the electrical connector 20 in FIG. 1 is a connector that is subjected to performance inspection. From a spherical protrusion such as solder on one surface of a ceramic or rigid hard resin substrate 12. And a plurality of electrical contacts 14. As the solder for the electrical contact 14, a good one is used as an electrical contact in which silver, antimony, or the like is added in addition to normal soldering elements lead and tin.
[0015]
Electrical connector 20 of the present invention is a substrate, i.e. a support member 21 comprises, on the surface of the support member 21 facing the direction of the connector 10 forms a first circuit 22. For example, a metal layer such as a copper foil is provided on the surface of the support member 21 in advance, and the metal layer is processed by, for example, a printed wiring pattern forming method which is one of the board manufacturing techniques, and is made of necessary conductors. A first circuit 22 is formed. Similarly, the portion of the lead wire 24 connected to the first circuit 22 can be formed by a printed wiring pattern forming method. As a material for the conductor forming the first circuit 22, brass, beryllium copper, phosphor bronze, or the like having good conductivity is used.
[0016]
The first circuit 22 is provided with a plurality of first electrical contacts 26 made of a material having good conductivity that comes into contact with the electrical contacts of the BAG chip. The conduction distance between these first electrical contacts and electrical contacts is less than 5 mm. The first electrical contact 26 contacts the electrical contact 14 of the connector 10 to be subjected to performance inspection. The first electrical contact 26 is provided on the first circuit 22 by plating or the like. The structure of the first electrical contact 26 will be described later with reference to FIGS. 3 and 4. Further, a protective coating layer 28 made of synthetic resin or the like is provided on the surface of the support member 21 except for the first electric contact 26 to protect the first circuit 22 and the lead wires 24.
[0017]
A second circuit 30 made of a necessary conductor is provided on the opposite side of the first circuit 22 of the electrical connector 20, and the conductor material and formation method of the second circuit are substantially the same as those of the first circuit 22. The second circuit 30 is provided with a plurality of hemispherical second electrical contacts 32 that contact the pads 42 of the substrate 40. The second electrical contact 32 is made of an alloy such as gold, nickel, or copper. As apparent from the drawing, the shapes of the first electrical contact 26 that contacts the electrical contact 14 of the BAG chip and the second electrical contact 32 that contacts the pad 42 of the substrate 40 are different depending on the purpose. .
A conductor 34 for connecting the first circuit 22 and the second circuit 30 is provided. The conductor 34 can be a normal lead wire, metal foil, or the like.
A substrate 40 which is a second counterpart shown below the electrical connector 20 in FIG. 1 is provided with a gold-plated pad 42 for the second electrical contact 32 to contact.
[0018]
In the present invention, when in contact with the electrical contacts 14 of the connector 10 is a first partner Subjected to performance inspection, for the removal of solder from adhering to the first electric contact 26, a first electrical contact of the electrical connector 20 At least one triangular wave protrusion 36 is provided on the surface of the child 26, and the tip of the triangular wave protrusion 36 is sharpened to some extent.
About 0.1 to 0.2 mm is sufficient as the protrusion amount of the triangular wave protrusion 36. As for the number of the triangular wave projections 36, it is desirable that there are a plurality of triangular wave projections 36 in consideration of a positional shift between the electrical contact 14 of the connector 10 and the electrical first contactor 26 of the electrical connector 20. When a plurality of triangular wave projections are provided, the surface of the first electrical contact 26 becomes wavy.
[0019]
When the connector 10 which is the first counterpart to be subjected to the performance test is pressed against the electrical connector 20 and the electrical contact 14 of the connector 10 is brought into contact with the first electrical contact 26 of the connector 20, the support member 21 of the electrical connector 20, At least a portion supporting the first electrical contact 26 undergoes elastic deformation and bends downward. By bending, the electrical contact of the connector 10 slides on the first electrical contact 26 of the electrical connector 20, so that the solder attached to the surface of the first electrical contact 26 can be removed.
[0020]
The principle of removing the attached solder by the bending of the electrical connector 20 will be described with reference to FIG.
The electrical contact 14 of the connector 10 is pressed against the electrical connector 20 with a constant force, and the electrical contact 14 of the connector 10 contacts the first electrical contact 26 of the electrical connector 20 at a position X in FIG. Thereafter, when pressed with a certain force, the first electrical contact 26 of the electrical connector 20 is displaced downward with the point O in FIG. 2 as a fulcrum, so the contact point X of the first electrical contact 26 is X ′. Move to. However, since the connector 10 is guided by the socket structure, it cannot move in the horizontal direction but moves in the vertical direction, and the electrical contact 14 of the connector 10 is the first electrical contact of the electrical connector 20 at the point Y in FIG. 26 is contacted. Therefore, the electrical contacts 14 of the connector 10 on the first electric contact 26 of the electrical connector 20 from the X 'point to the Y point, moved while pressed with a constant force, i.e. will be slid, the first electrical contact The solder attached to the surface of the child 26 can be removed.
[0021]
Next, with reference to FIG. 3 and FIG. 4, a method for forming the first electrical contact 26 having the elongated triangular wave-shaped protrusion 36 of the electrical connector 20 will be described.
The protective coating layer 28 is initially provided on the entire surface of the first circuit 22. As shown in FIG. 3, the slit 50 is provided in parallel to the sliding direction of the electrical contact 14 at a position where the first electrical contact 26 is provided. The slit 50 is formed by laser processing or the like.
Next, as shown in FIG. 4, the slit 50 is gradually plated is first subjected to plating in the slit, and further protruding higher plating the surface of the protective coating layer 28, the first electric contact 26 A triangular wave projection 36 including the main body portion is formed.
FIG. 4 is a cross-sectional view taken along a cross section perpendicular to the plane of the cross section of FIG.
[0022]
Next, the substrate of the electrical connector 20, that is, the support member 21 will be described.
For electrical contact 14 of the first connector 10 in contact with the electrical contacts 26 of the electrical connector 20 as described above slides on first electric contact 26, a support member 21 of the electrical connector 20 is elastically deformable It is necessary to be made of a soft resin having an appropriate rigidity and is made of an elastomer resin material rich in elasticity. However, it is not limited to the resin, and may be composed of a composite of an elastomer resin material and a metal spring.
[0023]
In another embodiment of the present invention, as indicated by reference numeral 52 in FIGS. 1 and 5, a U-shaped slit 52 is provided so as to surround the first electric contact 26 in the base material, that is, the support member 21 . Provide. As a result, each first electrical contact 26 is supported by a U-shaped cantilever, so that the electrical contact 14 of the connector 10 contacts the first electrical contact 26 and presses the first electrical contact 26. When this occurs, the first electrical contact 26 moves in the direction in which it is pressed, and sliding of the electrical contact 14 of the connector 10 on the first electrical contact 26 occurs as described above.
[0024]
Further, in another embodiment of the present invention shown in FIG. 6, the support member 21 is constituted by, for example, support members 53, 54, 55 made of a resin material, and a gap 56 is provided between these support members. Elasticity may be increased. Alternatively, at least one hole 56 may be provided in the integrated support member 21 to increase the elasticity of the support member 21. Alternatively, at least one hole 58 substantially perpendicular to the surface may be provided in the upper and lower support members 53 and 55 to facilitate the deformation of the support member.
[0025]
When the conductor 34 of FIG. 1 is provided, conductor wires are stretched at a predetermined interval, and liquid silicon is injected into a space in which the conductor wires are stretched, and is molded. Next, it is sliced to a predetermined thickness from the side perpendicular to the conductor wire, and the sliced surface is etched by a laser to project the conductor from the silicon surface. Next, the conductor protruding from the surface of the silicon is fitted into the electrical contact of the first circuit and the second circuit, and the hole provided in the metal conductor extending from the electrical contact. Thereafter, paste solder is applied, and the connection is fixed by reflow.
[0026]
【The invention's effect】
The electrical connector of the present invention has the following remarkable effects.
(1) In the electrical connector of the present invention , the contact on one surface is a first electrical contact having at least one elongated triangular wave-like protrusion, and the contact on the other surface is a spherical protruding contact having a different shape, Contact optimization is achieved according to the purpose of use.
(2) Since the electrical connector of the present invention is provided with at least one elongated triangular wave projection parallel to the sliding direction of the mating electrical contact on the surface of the first electrical contact, when repeatedly contacting the BGA chip The solder of the other electrical contact does not adhere to the first electrical contact, and the measurement of contact resistance does not become unstable due to the adhesion of the solder, and a stable connection can be made.
(3) Since the electrical connector of the present invention does not adhere the solder of the mating electrical contact to the first electrical contact as described above, it is not necessary to remove the solder with a brush, and the working efficiency is increased. In addition, there is no reduction in efficiency due to the removing action by the brush.
(4) Since the electrical connector of the present invention has a conduction distance between contacts of less than 5 mm, no special consideration is required during measurement and inspection, and a microstrip line that considers the characteristics of the transmission line is considered. This is unnecessary and contributes to cost reduction.
[Brief description of the drawings]
1 is a cross-sectional view of the electrical connector of the present invention shown together with a connector for receiving a performance test.
By mating contact slides [2] on the first electrical contact child of the electrical connector of the present invention, is a diagram for explaining a principle of removing the plating adhered to the first electrical contact.
3 is a plan view showing a step of forming an elongated projection on the first electrical contact of the electrical connector of the present invention.
FIG. 4 is a cross-sectional view of a first electrical contact having a protrusion of the electrical connector of the present invention.
FIG. 5 is a plan view of the electrical connector of the present invention in which a U-shaped slit is provided around the first electrical contact.
FIG. 6 is a cross-sectional view showing another modification of the support member of the electrical connector of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Connector 12 Board | substrate 14 Electrical contact 20 Electrical connector 21 Support member 22 1st circuit 24 Lead wire 26 1st electrical contact 28 Protective coating layer 30 2nd circuit 32 2nd electrical contact 34 Conductor 36 Triangular wave projection 40 Board | substrate 42 Pad 52 Slit 53, 54, 55 Support member 56 Gap, hole 58 hole

Claims

An electrical connector for connecting a first mating object and a second mating object facing each other, comprising: a supporting member; and a plurality of supporting members on the supporting member that are in contact with the first mating object and supported by cantilevers. A first circuit having a first electrical contact and disposed on one surface of the support member, and a second electrical contact in contact with a second counterpart and disposed on the other surface of the support member A second circuit, and a conductor connecting the first circuit and the second circuit,
The first electrical contact comes into contact with the electrical contact of the first counterpart, and is pressed and the support member bends downward, so that the electrical contact of the first counterpart is on the first electrical contact. Sliding and providing at least one triangular wave projection on the surface of the first electrical contact so as to be substantially parallel to the sliding direction;
Optimize the first electrical contact of the first circuit and the second electrical contact of the second circuit along the shape of the contact partner,
A protective coating layer formed with a plurality of slits parallel to the sliding direction of the electrical contacts of the first counterpart is provided on the entire surface of the first circuit, and the triangular wave-shaped protrusions are formed on the protective coating on the slits. An electrical connector comprising a plating formed so as to protrude higher than the surface of the layer .

When the first counterpart is a BGA (Ball Grid Array) and the second counterpart is a printed circuit board, the triangular wave protrusions are provided on the surface of the first electric contact of the first circuit, 2. The electrical connector according to claim 1 , wherein the second electric contact of two circuits is formed as a spherical protrusion, and the surfaces of the first circuit and the second circuit are formed in an irregular shape.

The electrical connector according to claim 1 or 2 , wherein the first electrical contact that contacts the first counterpart is integrally formed by plating together with a triangular wave projection on the surface thereof.

The electrical connector according to claim 1, 2 or 3 , wherein a U-shaped slit penetrating the support member is formed in the support member in close contact with the first electrical contact that contacts the first counterpart. .

The electrical connector according to claim 1 , wherein the support member is made of an elastically deformable soft resin.

The electrical connector according to claim 1 , wherein the support member is formed of a composite of an elastoma resin material and a metal spring.

The support member according to any one of claims 1 to 4 , wherein the support member includes a plurality of support members, and a gap is provided between the support members so that the entire support member can be more easily deformed. Electrical connector as described.

At least one hole is provided in the support member substantially parallel to or substantially perpendicular to the surface of the support member provided with the first circuit and the second circuit so that the support member can be more easily deformed. The electrical connector according to any one of claims 1 to 4 .