JP4500912B2

JP4500912B2 - connector

Info

Publication number: JP4500912B2
Application number: JP2000342505A
Authority: JP
Inventors: 英治白田
Original assignee: 大宏電機株式会社
Priority date: 2000-11-09
Filing date: 2000-11-09
Publication date: 2010-07-14
Anticipated expiration: 2020-11-09
Also published as: JP2002151186A

Description

【０００１】
【発明の属する技術分野】
本発明は、プリント基板へ仮取付するための取付機構を有するコネクタに関する。
【０００２】
【従来の技術】
コネクタのプリント基板への仮取付機構としては、例えば図５に示すように、コネクタ５０の絶縁ハウジング５１のプリント基板に接する端部５１ａから突出し、空所部５１ｂを挟んで対向する２片のガイド片５１ｃ、５１ｄを形成し、少なくともその一方の先端に脱落防止のための突起５１ｅ、５１ｆを設けた構造が良く知られている。
【０００３】
この従来のコネクタのプリント基板への仮取付は、図示しないプリント基板に設けた仮取付用の貫通孔にガイド片５１ｃ、５１ｄを挿入し、同時に電気的接続用の貫通孔に接続端子５１ｇを挿入するが、その際、仮取付用の貫通孔の大きさは突起５１ｅ、５１ｆの頂点間の寸法よりも小さくしてあり、ガイド片５１ｃ、５１ｄは互いに近接する方向に撓みながら仮取付用の貫通孔に挿入され、突起５１ｅ、５１ｆの頂点がプリント基板の反対表面まで貫通すると、ガイド片５１ｃ、５１ｄの撓みが元に戻り、コネクタ５０のプリント基板への仮取付が行われ、その後、接続端子５１ｇがプリント基板に半田付されるなどして、コネクタ５０の基板への取付が完了する。
【０００４】
また、異なる従来例として、図６に示すように、コネクタ６０の絶縁ハウジング６１のプリント基板に接する端部６１ａから突出し、先端で折り返す形状をした１片のガイド片６１ｈに突起６１ｉを形成し、突起６１ｉの後方の空所部６１ｊと、ガイド片６１ｈの大部分を覆うように覆い部６１ｋを形成したものが知られている。なお、ガイド片６１ｈがプリント基板の穴に挿入され、仮取付された後、図５の場合と同様に、接続端子６１ｇがプリント基板に半田付けされる。
【０００５】
【発明が解決しようとする課題】
しかし、図５に示す従来のコネクタのプリント基板への仮取付機構においては、２片のガイド片５１ｃ、５１ｄはその先端が２分されているため、複数のコネクタ５０を１つの箱に収納しての運搬に際し、２片のガイド片５１ｃ、５１ｄの間の空所部５１ｂに、他のコネクタのガイド片５１ｃ、５１ｄや接続端子５１ｇが挟まって、互いに絡み合って分離しにくくなり、分離に際し、ガイド片５１ｃ、５１ｄや接続端子５１ｇの破損や変形が生じるなど使用の妨げになる問題が生じていた。
【０００６】
また、図６に示す従来のコネクタのプリント基板への仮取付機構においては、プリント基板の仮取付用の貫通孔への挿入に要する挿入力を適度な値とするためには、空所部６１ｊの挿入方向の長さを長くすることが要求され、それがプリント基板の反対表面に突出して、装置の小型化の妨げになるという問題があった。
【０００７】
本発明は、複数のコネクタ５０を１つの箱に収納しての運搬においても、互いに絡み合うことなく容易に分離できて使用の妨げにならず、仮取付のためのガイド片のプリント基板の反対表面への突出量を少なくして、装置の小型化の妨げにならないコネクタを得ることを目的とする。
【０００８】
【課題を解決するための手段】
上記課題を解決するため、本発明では、プリント基板へ仮取付するコネクタにおいて、複数の接続端子が設けられたハウジングと、前記ハウジングのプリント基板への取付基準面から突出して形成された取付脚と、該取付脚の中央部を切り欠いて形成した矩形の空所部と、該空所部に形成され、前記ハウジングから該空所部の底面部に向けて該空所部内に垂設される係止片と、該係止片の下端に形成され、前記取付脚の外周より突出する突起部とを有するコネクタとし、複数のコネクタを１つの箱に収納して運搬する等しても互いに絡み合うことなく、基板反対表面への突出を少ないものとできる。
【０００９】
また、空所部は、取付脚から連続して取付基準面を超えてハウジングの内部にもその一部が形成されていることで、係止片の弾性を良好にした。
【００１０】
【発明の実施の形態】
以下図面を参照しながら、本発明の実施の形態を説明する。
【００１１】
図１及び図２は、本発明の取付構造を用いたコネクタの一実施例を示し、図１はその正面図、図２はその右側面図である。
【００１２】
図１及び図２において、コネクタ１は、絶縁性を有する樹脂材料で形成されたハウジング２と、ハウジング２に組み付けられた複数の接続端子３で構成され、ハウジング２の左右の取付基準面４には略柱状の取付脚５が、ハウジング２と一体に形成されている。
【００１３】
取付脚５は、この例では外形形状が円柱又は多角形柱であって、プリント基板の仮取付用の貫通孔への挿入を容易にするために、先端部を必要に応じて面取りを施した形状とし、取付脚内には略矩形の空所部６が形成され、空所部６の内部には、係止片７が空所部６の底面部６ａに向けてハウジング２側から伸びてハウジング２と一体に形成されている。
【００１４】
空所部６は、取付脚５から連続して取付基準面４を超えてハウジング２の内部にもその一部が形成され、係止片７の周囲よりも樹脂成形の生産性を考慮して、可能な限り狭い隙間を有した形状として、係止片７の弾性を良好ならしめると共に、係止片７の周囲の空所部６に、他のコネクタの取付脚や接続端子等が入り込み難く形成される。
【００１５】
また、取付脚５の先端部分は、後述するプリント基板への取付過程において明らかなように、なんらの機械的な強度や弾性を必要としないので、空所部６の下端部から取付脚５の先端部部分までの樹脂の肉厚は、樹脂成形の生産性を考慮して、可能な限り薄肉の形状とする。
【００１６】
図３は、取付機構の要部を示す図１のＡ−Ａ線断面部分図である。図３において、これまで説明したと同一箇所には同一の符号を付して説明を省略する。
【００１７】
図３において、取付脚５の空所部６の内部に形成される係止片７は、取付基準面４よりも図示上方のハウジング２から垂設され、その先端近傍には突起部７ａが一体に形成されている。また、先端頂部７ｂは取付脚５の外周に突出せず、突起部７ａは取付脚５の外周よりも突出する形状としている。
【００１８】
図４は、本発明のコネクタ１のプリント基板への取付過程を示す図３と同様な断面部分図である。図４においても、これまで説明したと同一箇所には同一の符号を付して説明を省略する。
【００１９】
図４において、プリント基板８の貫通孔８ａと取付脚５をおおよその位置合わせをして、コネクタ１をプリント基板８の上方から取付を開始すると、取付脚５の先端部は面取りが施してあり、係止片７の先端頂部７ｂは取付脚５の外周に突出していないので、取付脚５の貫通孔８ａへの挿入を円滑に開始することができる。
【００２０】
つぎに図４に図示する挿入途中では、係止片７に形成した突起部７ａが貫通孔８ａに当接するが、突起部７ａはハウジング２から充分な距離を隔てた係止片７上に形成されているので、係止片７はそのハウジング２との分岐点近傍を支点として取付脚５の空所部６の内方に容易に撓むことができ、突起部７ａは貫通孔８ａを円滑に通過することができる。
【００２１】
そして、図示しないが突起部７ａがプリント基板の反対表面に到達すると、係止片７の撓みが復元し、突起部７ａのハウジング２側の端部は、係止片７に対して略垂直に形成されているため、取付基準面４と突起部７ａとでプリント基板を挟持する状態となって、コネクタ１はプリント基板８に仮取付される。
【００２２】
【発明の効果】
以上説明したように、本発明によれば、複数のコネクタを１つの箱に収納して運搬する等しても、互いに絡み合うことなく容易に分離できて使用の妨げにならず、また仮取付のためのガイド片のプリント基板の反対表面への突出量を少なくでき、装置の小型化に寄与できるコネクタを得ることができる。
【図面の簡単な説明】
【図１】本発明の取付構造を用いたコネクタの一実施例の正面図である。
【図２】図１の本発明の取付構造を用いたコネクタの右側面図である。
【図３】取付機構の要部を示す図１のＡ−Ａ線断面部分図である。
【図４】プリント基板への取付過程を示す図３と同様な断面部分図である。
【図５】従来の取付機構を有するコネクタの部分図である。
【図６】従来の他の取付機構を有するコネクタの断面部分図である。
【符号の説明】
１，５０，６０コネクタ、２，５１，６１ハウジング、３，５１ｇ，６１ｇ接続端子、４取付基準面、５取付脚、６空所部、６ａ底面部、７係止片、７ａ突起部、７ｂ先端頂部、８プリント基板、８ａ貫通孔。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector having an attachment mechanism for temporarily attaching to a printed circuit board.
[0002]
[Prior art]
As a temporary attachment mechanism of the connector to the printed circuit board, for example, as shown in FIG. 5, two pieces of guides that protrude from the end portion 51a of the insulating housing 51 of the connector 50 that contacts the printed circuit board and face each other with the space 51b interposed therebetween. A structure in which the pieces 51c and 51d are formed and the protrusions 51e and 51f for preventing the drop-off are provided at least at one end thereof is well known.
[0003]
Temporary mounting of the conventional connector to the printed circuit board is performed by inserting the guide pieces 51c and 51d into the temporary mounting through holes provided on the printed circuit board (not shown), and simultaneously inserting the connection terminals 51g into the electrical connection through holes. However, at this time, the size of the through hole for temporary attachment is made smaller than the dimension between the apexes of the protrusions 51e and 51f, and the guide pieces 51c and 51d penetrate through for temporary attachment while being bent in the directions close to each other. When the projections 51e and 51f are inserted into the holes and the tops of the protrusions 51e and 51f penetrate to the opposite surface of the printed circuit board, the bending of the guide pieces 51c and 51d is restored, and the connector 50 is temporarily attached to the printed circuit board. 51g is soldered to the printed circuit board, and the attachment of the connector 50 to the circuit board is completed.
[0004]
Further, as a different conventional example, as shown in FIG. 6, a protrusion 61 i is formed on one guide piece 61 h that protrudes from an end portion 61 a that contacts the printed circuit board of the insulating housing 61 of the connector 60 and is folded at the tip. There is known one in which a cover portion 61k is formed so as to cover a void portion 61j behind the protrusion 61i and most of the guide piece 61h. In addition, after the guide piece 61h is inserted into the hole of the printed board and temporarily attached, the connection terminal 61g is soldered to the printed board as in the case of FIG.
[0005]
[Problems to be solved by the invention]
However, in the conventional temporary attachment mechanism of the connector shown in FIG. 5 to the printed circuit board, the two guide pieces 51c and 51d are divided into two ends, so that a plurality of connectors 50 are stored in one box. When transporting, the gap 51b between the two guide pieces 51c, 51d is sandwiched between the guide pieces 51c, 51d of the other connector and the connection terminal 51g, which are entangled with each other and difficult to separate. The guide pieces 51c and 51d and the connection terminal 51g are damaged or deformed, resulting in problems that hinder use.
[0006]
Moreover, in the temporary attachment mechanism of the conventional connector to the printed circuit board shown in FIG. 6, in order to make the insertion force required for insertion into the through-hole for temporary attachment of the printed circuit board into an appropriate value, the cavity portion 61j There is a problem that it is required to increase the length in the insertion direction of the device, which protrudes on the opposite surface of the printed circuit board and hinders downsizing of the device.
[0007]
In the present invention, even when a plurality of connectors 50 are housed in a single box, they can be easily separated without being entangled with each other and do not hinder use. An object of the present invention is to obtain a connector that does not hinder downsizing of the apparatus by reducing the amount of protrusion of the device.
[0008]
[Means for Solving the Problems]
To solve the above problems, the present invention, a connector for temporarily attached to the printed circuit board, a housing in which a plurality of connection terminals are provided, and a mounting leg formed to protrude from the mounting reference plane of the printed circuit board of the housing A rectangular void portion formed by cutting out the central portion of the mounting leg , and formed in the void portion, and suspended in the void portion from the housing toward the bottom surface of the void portion. A connector having a locking piece and a protrusion formed at the lower end of the locking piece and projecting from the outer periphery of the mounting leg is intertwined even when a plurality of connectors are housed in a single box and transported. Therefore, the protrusion to the surface opposite to the substrate can be reduced.
[0009]
In addition, the void portion is formed in part inside the housing beyond the reference mounting surface continuously from the mounting leg, thereby improving the elasticity of the locking piece.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
1 and 2 show an embodiment of a connector using the mounting structure of the present invention, FIG. 1 is a front view thereof, and FIG. 2 is a right side view thereof.
[0012]
1 and 2, the connector 1 includes a housing 2 formed of an insulating resin material and a plurality of connection terminals 3 assembled to the housing 2. A substantially columnar mounting leg 5 is formed integrally with the housing 2.
[0013]
In this example, the mounting leg 5 is a cylinder or a polygonal column, and the tip portion is chamfered as necessary in order to facilitate insertion into the through hole for temporary mounting of the printed circuit board. A substantially rectangular void portion 6 is formed in the mounting leg, and a locking piece 7 extends from the housing 2 side toward the bottom surface portion 6 a of the void portion 6 inside the void portion 6. It is formed integrally with the housing 2.
[0014]
Part of the void portion 6 is continuously formed from the mounting leg 5 beyond the mounting reference surface 4 and also inside the housing 2, considering the productivity of resin molding rather than the periphery of the locking piece 7. In addition to making the shape of the gap as narrow as possible, the elasticity of the locking piece 7 is made good, and the mounting legs and connection terminals of other connectors do not easily enter the space 6 around the locking piece 7. It is formed.
[0015]
Further, as will be apparent in the process of attaching to the printed circuit board, which will be described later, the tip portion of the mounting leg 5 does not require any mechanical strength or elasticity. The thickness of the resin up to the tip portion is made as thin as possible in consideration of the productivity of resin molding.
[0016]
FIG. 3 is a partial cross-sectional view taken along line AA of FIG. 1 showing a main part of the attachment mechanism. In FIG. 3, the same portions as those described so far are denoted by the same reference numerals, and the description thereof is omitted.
[0017]
In FIG. 3, the locking piece 7 formed inside the cavity portion 6 of the mounting leg 5 is suspended from the housing 2 above the mounting reference surface 4 in the drawing, and a protrusion 7a is integrated in the vicinity of the tip. Is formed. Further, the tip apex portion 7 b does not protrude from the outer periphery of the mounting leg 5, and the protruding portion 7 a has a shape protruding from the outer periphery of the mounting leg 5.
[0018]
FIG. 4 is a partial cross-sectional view similar to FIG. 3 showing the process of attaching the connector 1 of the present invention to a printed circuit board. Also in FIG. 4, the same portions as those described so far are denoted by the same reference numerals and description thereof is omitted.
[0019]
In FIG. 4, when the through hole 8a of the printed circuit board 8 and the mounting leg 5 are roughly aligned and the connector 1 is mounted from above the printed circuit board 8, the tip of the mounting leg 5 is chamfered. Since the top end portion 7b of the locking piece 7 does not protrude from the outer periphery of the mounting leg 5, the insertion of the mounting leg 5 into the through hole 8a can be started smoothly.
[0020]
Next, in the middle of the insertion shown in FIG. 4, the protruding portion 7 a formed on the locking piece 7 contacts the through hole 8 a, but the protruding portion 7 a is formed on the locking piece 7 separated from the housing 2 by a sufficient distance. Therefore, the locking piece 7 can be easily bent inward of the space portion 6 of the mounting leg 5 with the vicinity of the branch point with the housing 2 as a fulcrum, and the protrusion 7a smoothly passes through the through hole 8a. Can pass through.
[0021]
Then, although not shown, when the protrusion 7a reaches the opposite surface of the printed circuit board, the bending of the locking piece 7 is restored, and the end of the protrusion 7a on the housing 2 side is substantially perpendicular to the locking piece 7. Thus, the connector 1 is temporarily attached to the printed circuit board 8 with the printed circuit board sandwiched between the attachment reference surface 4 and the protrusion 7a.
[0022]
【The invention's effect】
As described above, according to the present invention, even when a plurality of connectors are housed in a single box and transported, the connectors can be easily separated without being entangled with each other, so that they are not hindered from being used. Therefore, the amount of protrusion of the guide piece to the opposite surface of the printed circuit board can be reduced, and a connector that can contribute to downsizing of the apparatus can be obtained.
[Brief description of the drawings]
FIG. 1 is a front view of an embodiment of a connector using a mounting structure according to the present invention.
FIG. 2 is a right side view of a connector using the mounting structure of the present invention shown in FIG.
FIG. 3 is a partial cross-sectional view taken along line AA of FIG. 1 showing a main part of the attachment mechanism.
4 is a partial cross-sectional view similar to FIG. 3 showing a process of attaching to a printed circuit board.
FIG. 5 is a partial view of a connector having a conventional attachment mechanism.
FIG. 6 is a partial cross-sectional view of a connector having another conventional attachment mechanism.
[Explanation of symbols]
1,50,60 connector, 2,51,61 housing, 3,51g, 61g connection terminal, 4 mounting reference surface, 5 mounting leg, 6 cavity portion, 6a bottom surface portion, 7 locking piece, 7a protrusion, 7b Tip top, 8 printed circuit board, 8a through hole.

Claims

In a connector temporarily attached to a printed circuit board, a housing provided with a plurality of connection terminals , an attachment leg formed to project from a reference surface for attachment of the housing to the printed circuit board, and a central portion of the attachment leg are notched A formed rectangular space portion, a locking piece formed in the space portion and suspended in the space portion from the housing toward the bottom surface of the space portion, and a lower end of the locking piece And a protrusion protruding from the outer periphery of the mounting leg.

2. The connector according to claim 1, wherein a part of the void portion is formed in the interior of the housing beyond the reference mounting surface continuously from the mounting leg.