JP4597416B2 - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
JP4597416B2
JP4597416B2 JP2001123170A JP2001123170A JP4597416B2 JP 4597416 B2 JP4597416 B2 JP 4597416B2 JP 2001123170 A JP2001123170 A JP 2001123170A JP 2001123170 A JP2001123170 A JP 2001123170A JP 4597416 B2 JP4597416 B2 JP 4597416B2
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Prior art keywords
substrate
housing
terminal
electrical connector
mounting
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JP2001123170A
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JP2002319443A (en
Inventor
司 久保
幸介 竹松
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JST Mfg Co Ltd
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JST Mfg Co Ltd
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Priority to JP2001123170A priority Critical patent/JP4597416B2/en
Priority to KR10-2002-0021129A priority patent/KR100458682B1/en
Priority to CNB021055971A priority patent/CN1215605C/en
Priority to TW091108099A priority patent/TW543252B/en
Publication of JP2002319443A publication Critical patent/JP2002319443A/en
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Publication of JP4597416B2 publication Critical patent/JP4597416B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/028—Soldered or welded connections comprising means for preventing flowing or wicking of solder or flux in parts not desired
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • H01R12/523—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures by an interconnection through aligned holes in the boards or multilayer board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、基板の表面に取り付けられて、その端子及び係止具が基板の背面に係止される電気コネクタに関する。
【０００２】
【従来の技術】
従来、図６に示すように、この種の電気コネクタ３０では、基板３１の表面３２に当接するハウジング３３の取付面３４から係止具３５が突出しており、係止具３５は、基板３１の係止具挿通孔３６を貫通して基板３１の裏面３７に係止されることにより、電気コネクタ３０を基板３１にロックしている。
また、取付面３４から所定量凹んだ凹部３８からは端子のリード３９が突出しており、各リード３９は基板３１の対応する挿通孔４０に挿通され、基板３１の裏面３７に突出している。
【０００３】
【発明が解決しようとする課題】
通例、電気コネクタの製造工程では、図６に示す状態で、例えば、噴流式はんだ付け方式(WAVE SOLDERING)の自動はんだ付け装置のコンベア炉内に搬送され、リード３９の先端が基板３２の裏面３７の導電部（図示せず）にはんだ付けされるが、いわゆるフラックス上がりの問題がある。
すなわち、電気コネクタ３０が、コンベア炉内に搬送されるときに、基板３１の底面である裏面３７に拡げられるフラックスが係止具挿通孔３６を通して基板３１の表面３２に達し、次いで凹部３８を横に拡がり、さらにハウジング３３に形成される端子保持孔（図示せず）を通して、端子の接点部に達するおそれがある（図６において、矢符にて示す）。この場合、端子の接触不良が発生するおそれがある。
【０００４】
本発明は上記課題に鑑みてなされたものであり、フラックス上がりによる接触不良の発生を確実に防止することができる電気コネクタを提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を達成するため、請求項１記載の発明は、背面に通ずる端子挿通孔及び係止具取付孔を有する基板の表面に取り付けられる電気コネクタにおいて、上記基板の表面に対向する対向面を有する合成樹脂からなるハウジングを備え、このハウジングの対向面は、基板の表面に当接する左右一対の取付面と、これら取付面間に形成され基板表面との間に所定の隙間を設ける中間面とを含み、ハウジングと一体の合成樹脂からなり、各取付面から突出し、基板の係止具取付孔を貫通して基板の背面に係止される一対の係止具と、ハウジングに横並びに保持され、中間面に開口する端子保持孔及び基板の端子挿通孔を貫通して基板の背面にはんだ付けされる複数の端子とをさらに備え、上記対向面は、上記ハウジングの取付面とこれに隣接する中間面との間を仕切る仕切り溝を含み、上記仕切り溝の溝底部が、上記中間面の最上位部よりも高位に配置されていることを特徴とするものである。
【０００６】
本発明では、仕切り溝によって、取付面と中間面との縁を切ってあるので、自動はんだ付け装置のコンベア炉内で、基板の裏面に拡がるフラックスが、仮に、係止具挿通孔を伝って取付面まで達したとしても、仕切り溝内に溜まることになり、中間面には伝わっていかない。したがって、フラックス上がりの影響で端子の接触不良が発生することを確実に防止することができる。
請求項２記載の発明は、請求項１において、上記ハウジングは対向面の背面となる連結側端面に、対となる電気コネクタを連結するための連結凹部を開口しており、上記端子は横方向に突出する湾曲状の突出部を含み、この突出部はハウジングの対向面側から端子保持孔を通して連結凹部内に収容されており、その頂部に接点部が設けられることを特徴とするものである。
【０００７】
この場合、端子保持孔は、端子をハウジングに装着するときに、端子の突出部を通過させる必要がある。このため、端子保持孔は、少なくとも突出部の突出する方向に関して大きくなる。したがって、万一、中間面にフラックスが達した場合には、これが端子の接点部に達し易い傾向にあるが、本発明では、中間面にフラックスが達する自体を確実に防止することができるので、このようなタイプの電気コネクタにおいても、接点部へのフラックス上がりを確実に防止することができる。
【０００８】
請求項３記載の発明は、請求項１又は２において、上記取付面に、係止具の周辺部を少なくとも中間面の反対側に開放させる開放溝を設けたことを特徴とするものである。本発明では、自動はんだ付け装置のコンベア炉内で、基板の裏面に拡がるフラックスが、仮に、係止具挿通孔を伝って取付面まで達したとしても、このフラックスを開放溝を介して中間面の反対側へ促すことができる。その結果、フラックス上がりに起因する端子接触不良の発生を、より確実に防止することができる。
【０００９】
請求項４記載の発明は、請求項１，２又は３において、上記仕切り溝の深さと幅の和が３ｍｍ以上であることを特徴とするものである。本願発明者は、取付面を介して仕切り溝内に侵入するフラックスが中間面に到達することを防止するためには、いわゆる縁面距離に相当するものが重要であるとの認識を持ち、３ｍｍ以上であれば、格段の効果を得られるという知見を得た。
【００１０】
【発明の実施の形態】
本発明の好ましい実施の形態を添付図面を参照しつつ説明する。
図１は本発明の一実施の形態の電気コネクタが基板に取り付けられた状態を示す一部破断側面図である。図２は図１のII−II線に沿う断面図であって基板の図示を省略してある。図３は図１の要部の部分断面拡大図である。
まず、図１を参照して、本電気コネクタ１は、基板２の表面２ａに取り付けられる絶縁性の合成樹脂からなるハウジング３と、このハウジング３を貫通する状態で例えば横並びの２列に配置された端子列４，５（図１では片側の端子列４のみを示してある。図２を参照）とを備えている。
【００１１】
図１を参照して、ハウジング３は左右方向Ｘに長い。ハウジング３は、基板２の表面２ａに対向する対向面６を有しており、この対向面６の左右方向Ｘの対向端部は、基板２の表面２ａに当接する一対の取付面７，７としてある。また、対向面６において、一対の取付面７，７間の中間面８は、取付面７から凹んだ位置にあり、中間面８と基板２の表面２ａとの間には、所定の隙間が設けられている。中間面８からは各端子列４（５）の各端子が突出し、基板２の表面２ａから裏面２ｂへ貫通して、基板２の裏面２ｂの導電部にはんだ付けされている（図示せず）。
【００１２】
また、一対の取付面７，７からは、ハウジング３と一体の合成樹脂により形成される一対の係止具９がそれぞれボス状をなして突出しており、各係止具９は係止具挿通孔２２を通して基板２の表面２ａから裏面２ｂへ貫通し、裏面２ｂに係止している。
本実施の形態の特徴とするところは、ハウジング３の対向面６を横断して、各取付面７と中間面８との間を仕切る仕切り溝１０を対向面６に形成し、仕切り溝１０によって、はんだ付け時のフラックス上がりを防止する点にある。
【００１３】
図２を参照して、端子列４は、端子４ａと端子４ｂを交互に配列しており、図２に示すように、端子４ａと端子４ｂとでは、そのリード７１，７２の形状のみが異なる。同様に、端子列５は、端子５ａと端子５ｂを交互に配列しており、端子５ａと端子５ｂとでは、そのリード７３，７４の形状のみが異なる。
図１及び図２を参照して、ハウジング３は、対向面６の背面となる連結側端面１１に開口する連結凹部１２を有している。連結凹部８は、相手方の電気コネクタの挿入凸部（図示せず）を挿入して連結するための凹部であり、本電気コネクタ１は、いわゆるトップタイプとして構成されている。
【００１４】
図２を参照して、ハウジング３において連結凹部１２を区画する前後一対の保持壁１３，１４にはそれぞれ端子保持溝１５が横並びで形成され、各端子保持溝１５には各端子列４，５の対応する端子が保持される。
連結凹部１２の下方となるハウジング３の底部３ａには、各端子列４，５の端子をそれぞれ保持する端子保持孔１６が形成されている。
端子４ａは、連結凹部１２の端子保持溝１５に収容される長尺の主体部１７と、この主体部１７の先端に設けられて山形形状に湾曲する突出部１８とを備える。この突出部１８の頂部により接点部１９が構成されている。さらに、端子４ａは、主体部１７に連なり端子保持孔１５に圧入される圧入部２０と、圧入部２０に連なりハウジング３の下方に突出するＬ字形形状をなすリード７１とを備えている。突出部１８はハウジング３の前後方向Ｙ（図２における左右方向）であって内向きに突出している。
【００１５】
端子４ｂも端子４ａと同様の構成であるが、端子４ａのリード７１がハウジング３の前方に大きくオフセットされているのに対して、端子４ｂのリード７２が後方へ若干量オフセットさている点が異なる。
端子列５の端子５ａは、端子列４の端子４ａに対してハウジング３の前後方向Ｙに対向しているが、その形状は、端子列４の４ｂに対して前後に対称な形状である。また、端子列５の端子５ｂは、端子列４の端子４ｂに対してハウジング３の前後方向Ｙに対向しているが、その形状は、端子列４の４ａに対して前後に対称な形状である。このようにして、各リード７１，７２，７３，７４を均一に分散させ、これにより、基板２の裏面２ｂにおいて、各リードのはんだ付け部分の干渉を防止しつつ実装密度を向上できるようにしてある。
【００１６】
例えば端子４ａをハウジング３に組み付けるときには、端子４ａの先端である突出部１８は、ハウジング３の底部３ａの端子保持孔１６を通して、連結凹部１２内に挿入されるようになっている。このため、端子保持孔１６の断面形状において、前後方向Ｙの幅は、突出部１８を通過させることのできる量に設定されている。したがって、端子保持孔１６に圧入部２０が圧入された状態で、端子保持孔１６内に隙間が存在することになる。なお、圧入部２０に形成される圧入突起は、ハウジング３の左右方向（図２において紙面に直交する方向）に向けて***するようにしてある。
【００１７】
図３を参照して、基板２には、各リード７１〜７４を挿通させるためにの端子挿通孔２１が基板２の表面２ａから裏面２ｂに貫通形成されると共に、係止具９を挿通させるための係止具挿通孔２２が貫通形成されている。
係止具９は、全体が略円柱状をなすボス状突起からなり、すり割り２３により分割された例えば一対の分割体２４，２５を有している。一対の分割体２４，２５のうち、電気コネクタ１の端部に近い側の分割体２４の先端には、外向きのフック２６が形成され、各フック２６が係止具挿通孔２２の周縁に係止するようにしてある。図３において、２９は仕切り溝１０を連結凹部１２内の側部に連通させる連通孔である。
【００１８】
仕切り溝３の断面形状は略矩形をなし、仕切り溝３の深さＨ（具体的には、取付面７からの高さに相当）と幅Ｗとの和は３ｍｍ以上になるように設定されている。例えば、深さＨを２ｍｍとし、幅Ｗを１．７ｍｍとしてある。
次いで、図４及び図５を参照して、係止具９の基部の周辺について説明する。
取付面７には、係止具９の基部の周囲を座ぐるようにして、開放溝２７が形成されている。この開放溝２７は左右方向Ｘに延び、ハウジング３の端部及び仕切り溝１０に開放している。このため、取付面７は前後一対の部分７ａ，７ｂに分割されている。さらに、開放溝２７の底部には、切り込み溝２８が係止具９の分割体２４に到達する範囲まで形成されている。また、上述した連通孔２９が開放溝２７及び仕切り溝１０の一部に開口している。
【００１９】
本実施の形態によれば、仕切り溝１０によって、取付面７と中間面８との縁を切ってあるので、下記の利点がある。すなわち、図１に示すように、係止具９によって電気コネクタ１を基板２の表面２ａに取り付けた状態で、これを、自動はんだ付け装置のコンベア炉内に搬送したときに、基板２の裏面２ｂに拡がるフラックスが、仮に、係止具挿通孔２２を伝って取付面７まで達したとしても、仕切り溝１０内に溜まることになり、端子保持孔１６（図２参照）が開口する中間面８には伝わっていかない。したがって、フラックス上がりの影響で端子４ａ等の接触不良が発生することを確実に防止することができる。
【００２０】
特に、仕切り溝１０の深さＨと幅Ｗの和が３ｍｍ以上としてあるので、取付面７を介して中間面８に到達するまでの、いわゆる縁面距離に相当する距離を充分に確保でき、中間面８へフラックスが伝わることを確実に防止することができる。
また、本実施の形態では、端子４ａ等をハウジング３に装着するときに、端子保持孔１６に突出部１８を通過させる必要があるため、端子保持孔１６が、大きくされており、したがって、万一、中間面８までフラックスが達した場合には、これが接点部１９に達し易い傾向にあるが、上記のようにして、中間面８にフラックスが達することを確実に防止することができるので、非常に好ましい。
【００２１】
さらに、取付面７に開放溝２７を設けてあるので、係止具９を伝わって上がってきたフラックスを溜めておく容積を充分に確保することができる。しかも、このフラックスが開放溝２７を介して切り込み溝２８や連通孔２９にも促されるので、全体としてフラックスを溜めておく容積を非常に大きく確保することができる。その結果、中間面８側へフラックスが到達することをより確実に防止することができ、端子接触不良の発生をより確実に防止することができる。
【００２２】
なお、本発明は上記実施の形態に限定されるものではなく、例えば、連通孔２９を廃止しても良い。また、開放溝２７は少なくともハウジング３の端部側に開放していれば良い。その他、本発明の範囲で種々の変更を施すことができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態の電気コネクタが基板に取り付けられた状態を示す一部破断側面図である。
【図２】図１のII−II線に沿う断面図である。
【図３】図１の要部の拡大断面図である。
【図４】電気コネクタを底面である対向面側から見た概略斜視図である。
【図５】電気コネクタの底面図である。
【図６】従来の電気コネクタの概略断面図である。
【符号の説明】
１ 電気コネクタ
２ 基板
２ａ 表面
２ｂ 裏面
３ ハウジング
４，５ 端子列
４ａ，４ｂ，５ａ，５ｂ 端子
６ 対向面
７ 取付面
８ 中間面
９ 係止具
１０ 仕切溝
１１ 連結側端面
１２ 連結凹部
１６ 端子保持孔
１８ 突出部
１９ 接点部
２１ 端子挿通孔
２２ 係止具挿通孔
２７ 開放溝
２８ 切り込み溝
２９ 連通孔
７１，７２，７３，７４ リード[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical connector that is attached to the surface of a substrate and whose terminals and locking members are locked to the back surface of the substrate.
[0002]
[Prior art]
Conventionally, in this type of electrical connector 30, as shown in FIG. 6, the locking tool 35 protrudes from the mounting surface 34 of the housing 33 that contacts the surface 32 of the board 31. The electrical connector 30 is locked to the substrate 31 by passing through the locking tool insertion hole 36 and being locked to the back surface 37 of the substrate 31.
Further, terminal leads 39 protrude from recessed portions 38 that are recessed by a predetermined amount from the mounting surface 34, and each lead 39 is inserted into a corresponding insertion hole 40 of the substrate 31 and protrudes from the back surface 37 of the substrate 31.
[0003]
[Problems to be solved by the invention]
Typically, in the manufacturing process of the electrical connector, in the state shown in FIG. However, there is a problem of so-called flux increase.
That is, when the electrical connector 30 is transported into the conveyor furnace, the flux spread on the back surface 37 which is the bottom surface of the substrate 31 reaches the front surface 32 of the substrate 31 through the locking tool insertion hole 36, and then the recess 38 crosses the recess 38. There is a risk of reaching the contact portion of the terminal through a terminal holding hole (not shown) formed in the housing 33 (indicated by an arrow in FIG. 6). In this case, the contact failure of the terminal may occur.
[0004]
This invention is made | formed in view of the said subject, and it aims at providing the electrical connector which can prevent generation | occurrence | production of the contact failure by a flux rise reliably.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is an electrical connector attached to a surface of a board having a terminal insertion hole and a locking tool attachment hole leading to the back surface, and has an opposing surface facing the surface of the board. A housing made of a synthetic resin is provided, and the opposing surfaces of the housing include a pair of left and right mounting surfaces that contact the surface of the substrate, and an intermediate surface that is formed between the mounting surfaces and provides a predetermined gap between the mounting surfaces. A synthetic resin integral with the housing, protruding from each mounting surface, penetrating through the board mounting holes of the board and locked to the back of the board, and held side by side in the housing, And a terminal holding hole that opens in the intermediate surface and a plurality of terminals that pass through the terminal insertion hole of the substrate and are soldered to the back surface of the substrate, and the opposing surface is adjacent to the mounting surface of the housing Look including the partition groove for dividing between the between surfaces, the groove bottom of the partition grooves, and is characterized in that it is arranged so high than the uppermost portion of the intermediate plane.
[0006]
In the present invention, since the edge between the mounting surface and the intermediate surface is cut by the partition groove, the flux spreading on the back surface of the substrate in the conveyor furnace of the automatic soldering apparatus temporarily passes through the engaging tool insertion hole. Even if it reaches the mounting surface, it will accumulate in the partition groove and will not be transmitted to the intermediate surface. Therefore, it is possible to reliably prevent the contact failure of the terminals from occurring due to the effect of flux increase.
According to a second aspect of the present invention, in the first aspect of the present invention, the housing has a connection recess for connecting a pair of electrical connectors on the connection side end surface which is the back surface of the opposing surface, and the terminal is in the lateral direction. The protruding portion is housed in the connecting recess through the terminal holding hole from the facing surface side of the housing, and a contact portion is provided on the top thereof. .
[0007]
In this case, the terminal holding hole needs to pass through the protruding portion of the terminal when the terminal is mounted on the housing. For this reason, a terminal holding hole becomes large at least about the direction in which a protrusion part protrudes. Therefore, in the unlikely event that the flux reaches the intermediate surface, this tends to reach the contact portion of the terminal, but in the present invention, it is possible to reliably prevent the flux itself from reaching the intermediate surface, Even in this type of electrical connector, it is possible to reliably prevent the flux from rising to the contact portion.
[0008]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the mounting surface is provided with an open groove that opens the peripheral portion of the locking tool to at least the opposite side of the intermediate surface. In the present invention, in the conveyor furnace of the automatic soldering apparatus, even if the flux spreading to the back surface of the substrate reaches the mounting surface through the engaging tool insertion hole, this flux is passed through the open groove to the intermediate surface. Can be urged to the other side. As a result, it is possible to more reliably prevent the occurrence of terminal contact failure due to flux increase.
[0009]
A fourth aspect of the present invention is characterized in that, in the first, second, or third aspect, the sum of the depth and width of the partition groove is 3 mm or more. The inventor of the present application recognizes that what corresponds to the so-called edge distance is important in order to prevent the flux that enters the partition groove through the mounting surface from reaching the intermediate surface. If it was above, the knowledge that a remarkable effect was acquired was acquired.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a partially broken side view showing a state where an electrical connector according to an embodiment of the present invention is attached to a substrate. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and illustration of the substrate is omitted. FIG. 3 is an enlarged partial cross-sectional view of the main part of FIG.
First, referring to FIG. 1, the electrical connector 1 is arranged in, for example, two rows arranged side by side in a state of passing through the housing 3 and a housing 3 made of an insulating synthetic resin attached to the surface 2 a of the substrate 2. Terminal rows 4 and 5 (FIG. 1 shows only one terminal row 4; see FIG. 2).
[0011]
Referring to FIG. 1, the housing 3 is long in the left-right direction X. The housing 3 has a facing surface 6 that faces the surface 2 a of the substrate 2, and a facing end portion in the left-right direction X of the facing surface 6 is a pair of mounting surfaces 7 and 7 that abut against the surface 2 a of the substrate 2. It is as. Further, in the facing surface 6, the intermediate surface 8 between the pair of mounting surfaces 7, 7 is in a position recessed from the mounting surface 7, and a predetermined gap is present between the intermediate surface 8 and the surface 2 a of the substrate 2. Is provided. Each terminal of each terminal row 4 (5) protrudes from the intermediate surface 8, penetrates from the front surface 2a of the substrate 2 to the back surface 2b, and is soldered to the conductive portion of the back surface 2b of the substrate 2 (not shown). .
[0012]
Further, from the pair of mounting surfaces 7, a pair of locking tools 9 formed of a synthetic resin integral with the housing 3 protrudes in a boss shape, and each locking tool 9 is inserted through the locking tool. It penetrates from the front surface 2a of the substrate 2 to the back surface 2b through the hole 22, and is locked to the back surface 2b.
A feature of the present embodiment is that a partition groove 10 is formed in the opposing surface 6 across the opposing surface 6 of the housing 3 so as to partition each mounting surface 7 and the intermediate surface 8. It is in the point which prevents the flux rise at the time of soldering.
[0013]
Referring to FIG. 2, terminal row 4 has terminals 4a and terminals 4b arranged alternately. As shown in FIG. 2, only the shapes of leads 71 and 72 are different between terminals 4a and 4b. . Similarly, in the terminal row 5, the terminals 5a and 5b are alternately arranged, and only the shapes of the leads 73 and 74 are different between the terminals 5a and 5b.
Referring to FIGS. 1 and 2, the housing 3 has a connection recess 12 that opens to a connection side end surface 11 that is the back surface of the facing surface 6. The connection recess 8 is a recess for inserting and connecting an insertion convex portion (not shown) of the other electrical connector, and the electrical connector 1 is configured as a so-called top type.
[0014]
Referring to FIG. 2, terminal holding grooves 15 are formed side by side on the pair of front and rear holding walls 13, 14 that define the coupling recess 12 in the housing 3, and each terminal row 4, 5 is provided in each terminal holding groove 15. Corresponding terminals are held.
Terminal holding holes 16 for holding the terminals of the terminal rows 4 and 5 are formed in the bottom 3a of the housing 3 below the connecting recess 12.
The terminal 4a includes a long main body portion 17 accommodated in the terminal holding groove 15 of the connection concave portion 12, and a projecting portion 18 provided at the tip of the main body portion 17 and curved in a chevron shape. A contact portion 19 is formed by the top of the protruding portion 18. Further, the terminal 4 a includes a press-fit portion 20 that is continuous with the main body portion 17 and press-fitted into the terminal holding hole 15, and an L-shaped lead 71 that is continuous with the press-fit portion 20 and protrudes downward from the housing 3. The protruding portion 18 protrudes inward in the front-rear direction Y (left-right direction in FIG. 2) of the housing 3.
[0015]
The terminal 4b has the same configuration as that of the terminal 4a, except that the lead 71 of the terminal 4a is largely offset to the front of the housing 3, whereas the lead 72 of the terminal 4b is slightly offset backward. .
The terminal 5 a of the terminal row 5 faces the terminal 4 a of the terminal row 4 in the front-rear direction Y of the housing 3, but its shape is symmetrical to the front and rear of 4 b of the terminal row 4. The terminal 5b of the terminal row 5 faces the terminal 4b of the terminal row 4 in the front-rear direction Y of the housing 3, but the shape thereof is symmetrical to the front and rear with respect to 4a of the terminal row 4. is there. In this way, each lead 71, 72, 73, 74 is uniformly dispersed, so that on the back surface 2b of the substrate 2, the mounting density can be improved while preventing the interference of the soldered portion of each lead. is there.
[0016]
For example, when the terminal 4 a is assembled to the housing 3, the protruding portion 18 that is the tip of the terminal 4 a is inserted into the connecting recess 12 through the terminal holding hole 16 in the bottom 3 a of the housing 3. For this reason, in the cross-sectional shape of the terminal holding hole 16, the width in the front-rear direction Y is set to an amount that allows the protruding portion 18 to pass therethrough. Accordingly, a gap exists in the terminal holding hole 16 in a state where the press-fitting portion 20 is press-fitted into the terminal holding hole 16. Note that the press-fitting protrusion formed on the press-fitting portion 20 protrudes in the left-right direction of the housing 3 (the direction orthogonal to the paper surface in FIG. 2).
[0017]
With reference to FIG. 3, terminal insertion holes 21 for inserting the leads 71 to 74 are formed through the substrate 2 from the front surface 2 a to the back surface 2 b, and the locking tool 9 is inserted through the substrate 2. A locking tool insertion hole 22 is formed through.
The locking tool 9 is composed of a boss-like projection having a substantially cylindrical shape as a whole, and has, for example, a pair of divided bodies 24 and 25 divided by a slot 23. Out of the pair of divided bodies 24, 25, an outward hook 26 is formed at the tip of the divided body 24 on the side close to the end of the electrical connector 1, and each hook 26 is formed on the periphery of the locking tool insertion hole 22. It is designed to be locked. In FIG. 3, reference numeral 29 denotes a communication hole that allows the partition groove 10 to communicate with the side portion in the connection recess 12.
[0018]
The sectional shape of the partition groove 3 is substantially rectangular, and the sum of the depth H of the partition groove 3 (specifically, the height from the mounting surface 7) and the width W is set to be 3 mm or more. ing. For example, the depth H is 2 mm, and the width W is 1.7 mm.
Next, the periphery of the base portion of the locking tool 9 will be described with reference to FIGS. 4 and 5.
An opening groove 27 is formed on the mounting surface 7 so as to sit around the base portion of the locking tool 9. The open groove 27 extends in the left-right direction X and is open to the end of the housing 3 and the partition groove 10. For this reason, the mounting surface 7 is divided into a pair of front and rear portions 7a and 7b. Furthermore, a cut groove 28 is formed at the bottom of the open groove 27 up to a range that reaches the divided body 24 of the locking tool 9. Further, the communication hole 29 described above is opened in a part of the open groove 27 and the partition groove 10.
[0019]
According to the present embodiment, since the edges of the attachment surface 7 and the intermediate surface 8 are cut by the partition groove 10, there are the following advantages. That is, as shown in FIG. 1, when the electrical connector 1 is attached to the front surface 2a of the substrate 2 by the locking tool 9, when this is conveyed into the conveyor furnace of the automatic soldering apparatus, the back surface of the substrate 2 Even if the flux spreading to 2b reaches the mounting surface 7 through the locking tool insertion hole 22, it will accumulate in the partition groove 10, and the intermediate surface where the terminal holding hole 16 (see FIG. 2) opens. 8 is not transmitted. Therefore, it is possible to reliably prevent contact failure of the terminals 4a and the like due to the influence of flux increase.
[0020]
In particular, since the sum of the depth H and the width W of the partition groove 10 is 3 mm or more, a distance corresponding to the so-called edge distance until reaching the intermediate surface 8 via the mounting surface 7 can be sufficiently secured. It is possible to reliably prevent the flux from being transmitted to the intermediate surface 8.
In the present embodiment, when the terminal 4a or the like is mounted on the housing 3, the terminal holding hole 16 is enlarged because it is necessary to allow the protruding portion 18 to pass through the terminal holding hole 16. 1. When the flux reaches the intermediate surface 8, this tends to reach the contact portion 19, but as described above, it is possible to reliably prevent the flux from reaching the intermediate surface 8, Highly preferred.
[0021]
Furthermore, since the open groove 27 is provided on the mounting surface 7, a sufficient volume can be secured for storing the flux that has risen through the locking tool 9. Moreover, since this flux is also urged to the cut groove 28 and the communication hole 29 through the open groove 27, the volume for storing the flux as a whole can be secured very large. As a result, it is possible to more reliably prevent the flux from reaching the intermediate surface 8 side, and it is possible to more reliably prevent the occurrence of poor terminal contact.
[0022]
In addition, this invention is not limited to the said embodiment, For example, you may abolish the communication hole 29. FIG. Moreover, the open groove 27 should just open to the edge part side of the housing 3 at least. In addition, various modifications can be made within the scope of the present invention.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view showing a state where an electrical connector according to an embodiment of the present invention is attached to a substrate.
2 is a cross-sectional view taken along line II-II in FIG.
FIG. 3 is an enlarged cross-sectional view of a main part of FIG.
FIG. 4 is a schematic perspective view of the electrical connector as viewed from the opposite surface side, which is the bottom surface.
FIG. 5 is a bottom view of the electrical connector.
FIG. 6 is a schematic sectional view of a conventional electrical connector.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electrical connector 2 Board | substrate 2a Front surface 2b Back surface 3 Housing 4, 5 Terminal row | line | column 4a, 4b, 5a, 5b Terminal 6 Opposite surface 7 Mounting surface 8 Intermediate surface 9 Locking tool 10 Partition groove 11 Connection side end surface 12 Connection recessed part 16 Terminal holding | maintenance Hole 18 Protruding portion 19 Contact portion 21 Terminal insertion hole 22 Locking tool insertion hole 27 Open groove 28 Cut groove 29 Communication holes 71, 72, 73, 74 Lead

Claims (4)

背面に通ずる端子挿通孔及び係止具取付孔を有する基板の表面に取り付けられる電気コネクタにおいて、
上記基板の表面に対向する対向面を有する合成樹脂からなるハウジングを備え、このハウジングの対向面は、基板の表面に当接する左右一対の取付面と、これら取付面間に形成され基板の表面との間に所定の隙間を設ける中間面とを含み、
さらに、ハウジングと一体の合成樹脂からなり、各取付面から突出し、基板の係止具取付孔を貫通して基板の背面に係止される一対の係止具と、
ハウジングに横並びに保持され、中間面に開口する端子保持孔及び基板の端子挿通孔を貫通して基板の背面にはんだ付けされる複数の端子とを備え、
上記対向面はハウジングの取付面と中間面との間を仕切る仕切り溝を含み、
上記仕切り溝の溝底部が、上記中間面の最上位部よりも高位に配置されていることを特徴とする電気コネクタ。In the electrical connector attached to the surface of the substrate having a terminal insertion hole and a fastener attachment hole leading to the back surface,
A housing made of a synthetic resin having a facing surface facing the surface of the substrate is provided, and the facing surface of the housing includes a pair of left and right mounting surfaces that contact the surface of the substrate, and a surface of the substrate formed between the mounting surfaces. And an intermediate surface providing a predetermined gap between,
Furthermore, a pair of latches made of synthetic resin integral with the housing, protruding from each mounting surface, penetrating through the latch mounting holes of the substrate and locked to the back surface of the substrate,
A plurality of terminals that are held side by side in the housing and open to the intermediate surface and soldered to the back surface of the substrate through the terminal insertion holes of the substrate;
The opposing surfaces viewed contains a partition groove for dividing between the mounting surface and the intermediate surface of the housing,
The electrical connector according to claim 1, wherein a groove bottom portion of the partition groove is disposed higher than an uppermost portion of the intermediate surface . 請求項１において、上記ハウジングは対向面の背面となる連結側端面に、対となる電気コネクタを連結するための連結凹部を開口しており、
上記端子は横方向に突出する湾曲状の突出部を含み、この突出部はハウジングの対向面側から端子保持孔を通して連結凹部内に挿入されて収容されており、突出部の頂部に接点部が設けられていることを特徴とする電気コネクタ。In claim 1, the housing has a connection recess for connecting a pair of electrical connectors on the connection side end surface which is the back surface of the opposing surface,
The terminal includes a curved protruding portion that protrudes in the lateral direction, and this protruding portion is inserted and accommodated in the connecting recess through the terminal holding hole from the opposite surface side of the housing, and a contact portion is provided at the top of the protruding portion. An electrical connector is provided. 請求項１又は２において、上記取付面に、係止具の周辺部を少なくとも中間面の反対側に開放させる開放溝を設けたことを特徴とする電気コネクタ。  3. The electrical connector according to claim 1, wherein an opening groove is provided on the mounting surface to open a peripheral portion of the locking tool to at least the opposite side of the intermediate surface. 請求項１，２又は３において、上記仕切り溝の深さと幅の和が３ｍｍ以上であることを特徴とする電気コネクタ。  4. The electrical connector according to claim 1, wherein the sum of the depth and width of the partition groove is 3 mm or more.
JP2001123170A 2001-04-20 2001-04-20 Electrical connector Expired - Fee Related JP4597416B2 (en)

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JP5026942B2 (en) * 2007-12-10 2012-09-19 日本圧着端子製造株式会社 Board connector and manufacturing method thereof
KR101014992B1 (en) * 2009-12-22 2011-02-17 엘지이노텍 주식회사 Connector
JP5692333B1 (en) 2013-10-30 2015-04-01 第一精工株式会社 Electrical connector housing
JP6815635B2 (en) * 2017-03-01 2021-01-20 日本圧着端子製造株式会社 connector
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