JP2005026021A - Shielding structure of coaxial connector for base plate mounting - Google Patents

Shielding structure of coaxial connector for base plate mounting Download PDF

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Publication number
JP2005026021A
JP2005026021A JP2003188826A JP2003188826A JP2005026021A JP 2005026021 A JP2005026021 A JP 2005026021A JP 2003188826 A JP2003188826 A JP 2003188826A JP 2003188826 A JP2003188826 A JP 2003188826A JP 2005026021 A JP2005026021 A JP 2005026021A
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Japan
Prior art keywords
coaxial connector
pattern
circuit board
flange
mounting
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.)
Withdrawn
Application number
JP2003188826A
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Japanese (ja)
Inventor
Atsushi Kaneko
敦司 金子
Daisuke Kawaguchi
大介 川口
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NEC Engineering Ltd
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NEC Engineering Ltd
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Filing date
Publication date
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Priority to JP2003188826A priority Critical patent/JP2005026021A/en
Publication of JP2005026021A publication Critical patent/JP2005026021A/en
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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shielding structure of a coaxial connector for base plate mounting enabled to connect an RF pattern without lifting it with a through-hole or the like by fitting the RF pattern at a connector mounting surface side of the base plate, capable of preventing unconformity of impedance characteristics, with workability improved by dispensing with manual soldering, capable of securing a perfect shielding in a simple structure. <P>SOLUTION: When the base plate is put on an automatic mounter, the base plate is mounted at an accurate position as a protrusion for positioning fitted at a lower part of a flange of the coaxial connector gets fitted into a positioning hole on the base plate. Further, the flange is connected to a GND pattern on the base plate, and a central conductor to the RF pattern. A conductive elastic shim is provided at an upper part of the flange, and the shim and a shielding case come in contact with each other in covering the base plate with the shielding case. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、回路基板に実装される基板取付用同軸コネクタに関し、特に実装の際の静電シールド構造が考慮された回路基板取付用同軸コネクタのシールド構造に関する。
【0002】
【従来の技術】
従来の回路基板取付用同軸コネクタは、シールドケース1などで電気的シールドを確保できない為、ディップタイプのコネクタ2を使用し、基板3を挟む上下のケースで電気的シールドを確保していた(図7参照)。通常このような回路基板取付用同軸コネクタは、図示しない自動搭載機によって回路基板への取り付け及び半田付けを行っているが、図7の場合、半田付け部4に機械的ストレスを与えない様、同軸コネクタをシ金属ケース5に締結した後、基板3の反りなどを無くすため、ネジ6などにより金属ケース5に押し付けた状態で手付けによる半田付けを行う必要があり、作業性があまり良くなかった。
【0003】
図8に示すように基板直付ディップタイプの同軸コネクタ9を基板11の部品面側に搭載する場合は、電気的シールドを確保する為の手段としてRFライン10を半田面パターンで接続しなければならず、一度スルーホール12などで部品面側に持ち上げる際、周囲GNDの層変換によるインピーダンス特性の不整合が起こりやすいという問題があった。
【0004】
また特許文献1記載の回路基板取付用同軸コネクタのシールド方法では、プリントパターン面が同軸ケーブルにより構成され、かつ前記プリントパターン面がシールドカバーにより被覆される構成になっている。
【0005】
【特許文献1】
特開平2−103872号公報
【0006】
【発明が解決しようとする課題】
上記説明したように、従来の回路基板取付用同軸コネクタのシールド方法では、手付け半田を行う必要があったり、インピーダンス特性の不整合が起こりやすいという問題があった。また特許文献1記載の回路基板取付用同軸コネクタのシールド方法では、シールドケースとセミリジットケーブルの隙間を完全になくす事は出来ず、半田付けによる遮蔽が必要となる為にコストが増大するという問題があった。
【0007】
【課題を解決するための手段】
上記課題を解決するため、本発明は、回路基板に実装される回路基板取付用同軸コネクタのシールド構造において、前記同軸コネクタは中心導体と、フランジと、該フランジの下部に設けられた複数の位置決め用突起と、該フランジの上部に設けられる導電性のシムとを有し、前記回路基板は前記複数の位置決め用突起に対応する位置に設けられた位置決め用穴と、前記同軸コネクタが実装される面側の前記位置決め穴の周囲に設けられた接地パターンと、前記同軸コネクタが実装される面側に設けられたRFパターンとを有し、前記複数の位置決め用突起が前記複数の位置決め穴に嵌り込むことにより前記フランジが前記接地パターンに接続されると共に前記中心導体が前記RFパターンと接続され、かつ前記同軸コネクタと前記回路基板とを被覆するシールドケースが設けられ、前記シムが前記シールドケースと密着することを特徴とする。
【0008】
また、前記シムは弾性であることを特徴とする。
【0009】
【発明の実施の形態】
以下、本発明の実施形態について図面を参照して詳細に説明する。
図1は本発明の実施形態にかかる同軸コネクタ搭載用基板1を示した図である。基板1には同軸コネクタを正確な位置に実装する為の位置決め用穴2が複数設けられており、また各々の位置決め用穴2周辺の同軸コネクタ実装側面にはGNDパターン3が設けられている。更に基板の同軸コネクタ実装側面にはRFパターン4が設けられている。
【0010】
図2は本実施形態にかかる基板取付用同軸コネクタ5を示す斜視図である。6は同軸コネクタ5の中心導体であり、7は基板取付用のフランジであり、導電性を有している。フランジ下部には位置決め用突起8が設けられており、基板に設けられている位置決め用穴に嵌り込むことにより同軸コネクタが正確な位置に実装される。またフランジ上部には導電性を有する弾性のシム9が設けられている。更にフランジは実装時にRFパターンとのショートを防ぐために、実装方向を限定しないように各面に切り欠き部10が設けられている。
【0011】
次に図3に本実施形態の実装前の構成概要図を示す。基板1を図示しない自動搭載機にかけると、同軸コネクタ5のフランジ7の下部に設けられた位置決め用突起8が基板1に設けられている位置決め用穴2に嵌り込むことにより正確な位置に実装される。この際に位置決め用穴2周辺に設けられたGNDパターン3とフランジ7が接触し、また中心導体6とRFパターン4が接触してそれぞれ導通される。この後自動搭載機によりそれぞれの接触面が半田付けされる。これにより、RFパターンをスルーホールなどで持ち上げることなく接続することが可能となる。
【0012】
次に基板のシールドを行う為に基板をシールドケース11で覆う。この際同軸コネクタに設けられたシム9とシールドケース11が接触することによりGND接続となるが、シム9は弾性を有しているのでシム9とシールドケース11との隙間を完全になくすことが出来る。これにより、完全なシールドを確保することが可能となる。図4は本実施形態の実装後の概要図である。
【0013】
上記実施形態ではシムとシールドケースを接触させているが、図5に示すようにシムの代わりに導電ガスケット12を用いてもよい。また図6に示すように、同軸コネクタの基板への接続強度を高める為にフランジ下部にリード13及びフック14を設け、基板に引っかける構造にしてもよい。
【0014】
なお、自動搭載装置は同軸コネクタを基板に取り付けたり、自動的に半田付けを行う装置であるが、当業者にとって周知であるため説明は割愛している。
【0015】
【発明の効果】
以上説明したように本発明の回路基板取付用同軸コネクタのシールド構造によれば、基板のコネクタ実装面側にRFパターンを設けたことにより、RFパターンをスルーホールなどで持ち上げることなく接続することが可能となり、インピーダンス特性の不整合を防ぐことが出来る。また手付け半田を行う必要がなくなるので作業性を向上させることが出来る。更に簡単な構造で完全なシールドを確保することが出来る。
【図面の簡単な説明】
【図1】本発明の実施形態にかかる同軸コネクタ搭載用基板1を示した図である。
【図2】本発明の実施形態にかかる基板取付用同軸コネクタ5を示す斜視図である。
【図3】本発明の実施形態の実装前の構成概要図である。
【図4】本発明の実施形態の実装後の概要図である。
【図5】本発明の第二の実施形態にかかかる同軸コネクタを示した図である。
【図6】本発明の第三の実施形態にかかかる同軸コネクタを示した図である。
【図7】従来の回路基板取付用同軸コネクタのシールド方法を示した図である。
【図8】従来の他の回路基板取付用同軸コネクタのシールド方法を示した図である。
【符号の説明】
1 同軸コネクタ搭載用基板
2 位置決め用穴
3 GNDパターン
4 RFパターン
5 基板取付用同軸コネクタ
6 中心導体
7 フランジ
8 位置決め用突起
9 シム
10 切り欠き部
11 シールドケース
12 導電ガスケット
13 リード
14 フック
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a board-mounting coaxial connector mounted on a circuit board, and more particularly to a shield structure for a circuit board-mounting coaxial connector in consideration of an electrostatic shield structure in mounting.
[0002]
[Prior art]
Since the conventional coaxial connector for circuit board mounting cannot secure an electrical shield by the shield case 1 or the like, the dip type connector 2 is used and the electrical shield is secured by the upper and lower cases sandwiching the board 3 (see FIG. 7). Usually, such a coaxial connector for mounting a circuit board is attached to a circuit board and soldered by an automatic mounting machine (not shown), but in the case of FIG. 7, in order not to give mechanical stress to the soldering part 4, After the coaxial connector is fastened to the metal case 5, it is necessary to perform soldering by hand in a state in which it is pressed against the metal case 5 with screws 6 or the like in order to eliminate warping of the substrate 3, and workability is not so good. .
[0003]
As shown in FIG. 8, when the dip type coaxial connector 9 directly attached to the substrate is mounted on the component surface side of the substrate 11, the RF line 10 must be connected by a solder surface pattern as a means for securing an electrical shield. In other words, there is a problem that impedance characteristics are likely to be mismatched due to layer conversion of the surrounding GND once it is lifted to the component surface side by the through hole 12 or the like.
[0004]
Moreover, in the shielding method of the coaxial connector for circuit board attachment of patent document 1, the printed pattern surface is comprised by the coaxial cable, and the said printed pattern surface is comprised by the shield cover.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 2-103872 [0006]
[Problems to be solved by the invention]
As described above, the conventional shield method for the coaxial connector for mounting a circuit board has problems that it is necessary to perform manual soldering and impedance characteristics are likely to be mismatched. Further, in the method of shielding a coaxial connector for mounting a circuit board described in Patent Document 1, the gap between the shield case and the semi-rigid cable cannot be completely eliminated, and shielding is required by soldering, resulting in an increase in cost. there were.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a shield structure for a coaxial connector for mounting a circuit board mounted on a circuit board, wherein the coaxial connector includes a central conductor, a flange, and a plurality of positioning members provided at a lower portion of the flange. The circuit board has a positioning hole provided at a position corresponding to the plurality of positioning protrusions, and the coaxial connector is mounted on the circuit board. A grounding pattern provided around the positioning hole on the surface side, and an RF pattern provided on the surface side on which the coaxial connector is mounted, and the plurality of positioning protrusions fit into the plurality of positioning holes. The flange is connected to the ground pattern and the center conductor is connected to the RF pattern, and the coaxial connector and the circuit board A shield case covering is provided, characterized in that the shim is in close contact with the shield case.
[0008]
The shim is elastic.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view showing a coaxial connector mounting board 1 according to an embodiment of the present invention. The substrate 1 is provided with a plurality of positioning holes 2 for mounting the coaxial connectors at accurate positions, and a GND pattern 3 is provided on the side of the coaxial connector mounting around each positioning hole 2. Further, an RF pattern 4 is provided on the side of the substrate where the coaxial connector is mounted.
[0010]
FIG. 2 is a perspective view showing the board-mounting coaxial connector 5 according to the present embodiment. Reference numeral 6 denotes a central conductor of the coaxial connector 5, and reference numeral 7 denotes a flange for mounting the board, which has conductivity. Positioning protrusions 8 are provided at the lower portion of the flange, and the coaxial connector is mounted at an accurate position by being fitted into a positioning hole provided in the substrate. Further, an elastic shim 9 having conductivity is provided on the upper portion of the flange. Furthermore, in order to prevent a short circuit with the RF pattern at the time of mounting, the flange is provided with a notch 10 on each surface so as not to limit the mounting direction.
[0011]
Next, FIG. 3 shows a schematic configuration diagram before the implementation of the present embodiment. When the board 1 is put on an automatic mounting machine (not shown), the positioning protrusion 8 provided at the lower portion of the flange 7 of the coaxial connector 5 is fitted into the positioning hole 2 provided in the board 1 to be mounted at an accurate position. Is done. At this time, the GND pattern 3 provided around the positioning hole 2 and the flange 7 are in contact with each other, and the center conductor 6 and the RF pattern 4 are in contact with each other to be electrically connected. Thereafter, each contact surface is soldered by an automatic mounting machine. As a result, the RF pattern can be connected without being lifted by a through hole or the like.
[0012]
Next, the substrate is covered with a shield case 11 in order to shield the substrate. At this time, the shim 9 provided on the coaxial connector comes into contact with the shield case 11 to make a GND connection. However, since the shim 9 has elasticity, the gap between the shim 9 and the shield case 11 can be completely eliminated. I can do it. This makes it possible to ensure a complete shield. FIG. 4 is a schematic diagram after the implementation of this embodiment.
[0013]
In the above embodiment, the shim and the shield case are brought into contact with each other, but a conductive gasket 12 may be used instead of the shim as shown in FIG. Further, as shown in FIG. 6, in order to increase the connection strength of the coaxial connector to the substrate, a lead 13 and a hook 14 may be provided at the lower portion of the flange so as to be hooked on the substrate.
[0014]
The automatic mounting apparatus is an apparatus that attaches a coaxial connector to a substrate or performs automatic soldering, but is not described because it is well known to those skilled in the art.
[0015]
【The invention's effect】
As described above, according to the shield structure of the coaxial connector for mounting a circuit board of the present invention, the RF pattern is provided on the connector mounting surface side of the board, so that the RF pattern can be connected without being lifted by a through hole or the like. It becomes possible to prevent mismatch of impedance characteristics. In addition, since there is no need to perform manual soldering, workability can be improved. In addition, a complete shield can be secured with a simple structure.
[Brief description of the drawings]
FIG. 1 is a view showing a coaxial connector mounting board 1 according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a board-mounting coaxial connector 5 according to an embodiment of the present invention.
FIG. 3 is a schematic configuration diagram before implementation of the embodiment of the present invention;
FIG. 4 is a schematic diagram after the implementation of the embodiment of the present invention.
FIG. 5 is a view showing a coaxial connector according to a second embodiment of the present invention.
FIG. 6 is a view showing a coaxial connector according to a third embodiment of the present invention.
FIG. 7 is a view showing a conventional shielding method for a coaxial connector for mounting a circuit board.
FIG. 8 is a view showing another conventional shielding method for a coaxial connector for mounting a circuit board.
[Explanation of symbols]
1 Coaxial connector mounting board 2 Positioning hole 3 GND pattern 4 RF pattern 5 Board mounting coaxial connector 6 Center conductor 7 Flange 8 Positioning protrusion 9 Shim 10 Notch 11 Shield case 12 Conductive gasket 13 Lead 14 Hook

Claims (5)

回路基板に実装される回路基板取付用同軸コネクタのシールド構造において、前記同軸コネクタは中心導体と、フランジと、該フランジの下部に設けられた複数の位置決め用突起と、該フランジの上部に設けられる導電性のシムとを有し、前記回路基板は前記複数の位置決め用突起に対応する位置に設けられた位置決め用穴と、前記同軸コネクタが実装される面側の前記位置決め穴の周囲に設けられた接地パターンと、前記同軸コネクタが実装される面側に設けられたRFパターンとを有し、前記複数の位置決め用突起が前記複数の位置決め穴に嵌り込むことにより前記フランジが前記接地パターンに接続されると共に前記中心導体が前記RFパターンと接続され、かつ前記同軸コネクタと前記回路基板とを被覆するシールドケースが設けられ、前記シムが前記シールドケースと密着することを特徴とする基板取付用同軸コネクタのシールド構造。In a shield structure of a circuit board mounting coaxial connector mounted on a circuit board, the coaxial connector is provided on a central conductor, a flange, a plurality of positioning protrusions provided at a lower portion of the flange, and an upper portion of the flange. A conductive shim, and the circuit board is provided around a positioning hole provided at a position corresponding to the plurality of positioning protrusions and the positioning hole on a surface side where the coaxial connector is mounted. A ground pattern and an RF pattern provided on a surface side on which the coaxial connector is mounted, and the flanges are connected to the ground pattern by fitting the plurality of positioning protrusions into the plurality of positioning holes. In addition, a shield case is provided in which the central conductor is connected to the RF pattern and covers the coaxial connector and the circuit board. , Shield structure of the coaxial connector board mounting, characterized in that said shim is in close contact with the shield case. 前記シムは弾性であることを特徴とする請求項1の基板取付用同軸コネクタのシールド構造。2. The shield structure for a coaxial connector for mounting a substrate according to claim 1, wherein the shim is elastic. 回路基板に実装される回路基板取付用同軸コネクタのシールド構造において、前記同軸コネクタは中心導体と、フランジと、該フランジの下部に設けられた複数の位置決め用突起と、該フランジの上部に設けられる導電性のガスケットとを有し、前記回路基板は前記複数の位置決め用突起に対応する位置に設けられた位置決め用穴と、前記同軸コネクタが実装される面側の前記位置決め穴の周囲に設けられた接地パターンと、前記同軸コネクタが実装される面側に設けられたRFパターンとを有し、前記複数の位置決め用突起が前記複数の位置決め穴に嵌り込むことにより前記フランジが前記接地パターンに接続されると共に前記中心導体が前記RFパターンと接続され、かつ前記同軸コネクタと前記回路基板とを被覆するシールドケースが設けられ、前記シムが前記シールドケースと密着することを特徴とする基板取付用同軸コネクタのシールド構造。In a shield structure of a circuit board mounting coaxial connector mounted on a circuit board, the coaxial connector is provided on a central conductor, a flange, a plurality of positioning protrusions provided at a lower portion of the flange, and an upper portion of the flange. A conductive gasket, and the circuit board is provided around a positioning hole provided at a position corresponding to the plurality of positioning protrusions and the positioning hole on a surface side where the coaxial connector is mounted. A ground pattern and an RF pattern provided on a surface side on which the coaxial connector is mounted, and the flanges are connected to the ground pattern by fitting the plurality of positioning protrusions into the plurality of positioning holes. And a shield case in which the central conductor is connected to the RF pattern and covers the coaxial connector and the circuit board. Vignetting, the shim shielding structure of the coaxial connector board mounting, characterized in that close contact with the shield case. 前記位置決め用突起は基板に引っかける為のリード及びフックを有することを特徴とする請求項1乃至3のいずれか1に記載の回路基板取付用同軸コネクタのシールド構造。4. The shield structure for a coaxial connector for mounting a circuit board according to claim 1, wherein the positioning protrusion has a lead and a hook for hooking on the board. 前記フランジは前記RFパターンとショートしない為の切り欠き部を有することを特徴とする請求項1乃至4のいずれか1に記載の回路基板取付用同軸コネクタのシールド構造。5. The shield structure for a coaxial connector for mounting a circuit board according to claim 1, wherein the flange has a notch for preventing short-circuiting with the RF pattern.
JP2003188826A 2003-06-30 2003-06-30 Shielding structure of coaxial connector for base plate mounting Withdrawn JP2005026021A (en)

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CN103579871A (en) * 2012-08-09 2014-02-12 泰科电子(上海)有限公司 Radio-frequency connector
JP2015533019A (en) * 2012-10-29 2015-11-16 ローゼンベルガー ホーフフレクベンツテクニーク ゲーエムベーハー ウント ツェーオー カーゲー Contact element for transmitting high-frequency signals between two circuit boards
JP2017073521A (en) * 2015-10-09 2017-04-13 日本アンテナ株式会社 Electronic apparatus case
KR20190037792A (en) * 2017-09-29 2019-04-08 히로세코리아 주식회사 Coaxial connector
KR102336050B1 (en) * 2020-05-28 2021-12-06 (주)엠케이 Device for fixing and supporting silicone steel sheets
US11246245B2 (en) 2017-10-17 2022-02-08 Panasonic Intellectual Property Management Co., Ltd. Camera

Cited By (13)

* Cited by examiner, † Cited by third party
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JP2009524179A (en) * 2006-01-17 2009-06-25 レセプテク ゲーエムベーハー RF connector installation means
JP2007227767A (en) * 2006-02-24 2007-09-06 Optrex Corp Electromagnetic shield structure of electronics
WO2012100601A1 (en) * 2011-01-27 2012-08-02 中兴通讯股份有限公司 Connector
JP2014022521A (en) * 2012-07-17 2014-02-03 Denso Corp Circuit board device
US9647392B2 (en) 2012-08-09 2017-05-09 Tyco Electronics Japan G.K. RF connector
CN103579871A (en) * 2012-08-09 2014-02-12 泰科电子(上海)有限公司 Radio-frequency connector
WO2014024137A1 (en) * 2012-08-09 2014-02-13 Tyco Electronics (Shanghai) Co. Ltd. An rf connector
JP2015533019A (en) * 2012-10-29 2015-11-16 ローゼンベルガー ホーフフレクベンツテクニーク ゲーエムベーハー ウント ツェーオー カーゲー Contact element for transmitting high-frequency signals between two circuit boards
JP2017073521A (en) * 2015-10-09 2017-04-13 日本アンテナ株式会社 Electronic apparatus case
KR20190037792A (en) * 2017-09-29 2019-04-08 히로세코리아 주식회사 Coaxial connector
KR102316690B1 (en) * 2017-09-29 2021-10-25 히로세코리아 주식회사 Coaxial connector
US11246245B2 (en) 2017-10-17 2022-02-08 Panasonic Intellectual Property Management Co., Ltd. Camera
KR102336050B1 (en) * 2020-05-28 2021-12-06 (주)엠케이 Device for fixing and supporting silicone steel sheets

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