JP4162337B2 - High-frequency circuit connection structure - Google Patents

High-frequency circuit connection structure Download PDF

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Publication number
JP4162337B2
JP4162337B2 JP24423099A JP24423099A JP4162337B2 JP 4162337 B2 JP4162337 B2 JP 4162337B2 JP 24423099 A JP24423099 A JP 24423099A JP 24423099 A JP24423099 A JP 24423099A JP 4162337 B2 JP4162337 B2 JP 4162337B2
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JP
Japan
Prior art keywords
cable
hole
screw
connection structure
circuit
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.)
Expired - Lifetime
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JP24423099A
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Japanese (ja)
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JP2001068873A (en
Inventor
智之 渡辺
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Kenwood KK
Sharp Corp
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Kenwood KK
Sharp Corp
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Description

【0001】
【発明の属する技術分野】
本発明は高周波回路の接続構造に関する。
【0002】
【従来の技術】
近年、携帯電話などの電子機器は、小型化、低価格化の進展とともに社会に広く普及し、例えば、携帯電話などは我々の生活に不可欠のツールになりつつある。
周知のように携帯電話は、電波を用いて情報(音声)を送受信するものであり、現行のシステムでは主に1.5GHz帯の電波を使用している。このような電波を送受信するために携帯電話には種々の高周波回路が配置されている。
【0003】
従来、これらの高周波回路の接続には両端にコネクタが付いた所定長の同軸ケーブルを使用するのが一般的であった。しかしながら、電子機器への小型化要求が強まるに伴い、配置スペースが制限されて接続すべき高周波回路が密接(隣接)配置されるようになり、そのためコネクタを使用しない以下のような接続構造が用いられるようになった。
【0004】
図3は、従来の密接配置された2つの高周波回路の接続構造例を示す断面図である。この図に示す高周波回路の接続構造は、各金属ケース21、31内に載置された回路基板22、32上の回路パターン23及び33を、前記各金属ケースに設けたケーブル貫通孔24、34に挿通されたセミリジッドケーブル25(semi-rigid coaxial cable, 外部導体に銅管を用いた半可とう性の同軸ケーブル、詳細は、例えば、電子情報通信学会編、"アンテナ工学ハンドブック"、p.239、オーム社、1989年参照)の中心導体25aを介してはんだ付け26、36により接続したものである。さらに、セミリジッドケーブル25の外部導体は各金属ケース21、31とはんだ付け27a(27b)、37a(37b)により接続されている。
【0005】
このような接続構造を採用することにより制限されたスペース内に密接配置された高周波回路の接続が可能になる。
【0006】
【発明が解決しようとする課題】
しかしながら上述したような従来の高周波回路の接続構造においては以下に示すような問題点があった。つまり、装置組立の際に高周波回路接続のために施されるはんだ付けの内、一部の箇所(27b、37b)が同軸ケーブル25の裏側となり、はんだ付け状態を目視確認しにくく、従って、はんだ付けの信頼性が低くなり問題であった。
本発明は、上述した従来の高周波回路の接続構造に関する問題を解決するためになされたもので、回路接続のためのはんだ付け状態を容易に目視確認でき、従って、はんだ付けの信頼性が高い高周波回路の接続構造を提供することを目的とする。
【0007】
【課題を解決するための手段】
上記目的を達成するために、本発明に係わる高周波回路の接続構造の請求項1記載の発明は、2つの筐体に収納された回路基板上の2つの高周波回路を同軸ケーブルにて接続するための構造であって、同軸ケーブルはセミリジッドケーブルであって、2つの筐体はいずれも所要部にセミリジッドケーブルを挿通する1つの第1のケーブル貫通孔とネジを挿通する2つの第1のネジ貫通孔とを備え、2つの筐体を該筐体間の隙間に配置させて接続するフランジを有してこのフランジに第1のケーブル貫通孔及びネジ貫通孔と連通する2つの第2のネジ貫通孔と1つのケーブル貫通孔とを備えた回路接続器を具備し、第2のケーブル貫通孔に挿通させた所定長のセミリジッドケーブルのアース部がフランジの所要部と予めはんだ付けされて電気的に導通し、回路接続器を2つの筐体の間に挿入配置して第1及び第2のケーブル貫通孔同士と第1及び第2のネジ貫通孔同士とを位置合わせした後に当該ネジ貫通孔にネジを挿通して共締めして固定し、セミリジッドケーブルの中心導体を2つの筐体に収納された回路基板上のパターンにそれぞれはんだにより接続する。
【0008】
【発明の実施の形態】
以下、図示した実施の形態例に基づいて本発明を詳細に説明する。図1は本発明に係わる高周波回路の接続構造について実施の形態例を示す断面図である。また、図2は本発明に係わる高周波回路の接続構造において使用する回路接続器を説明するための図であり、同図(a)は斜視図、同図(b)は断面図を示す。
【0009】
図2を参照しつつ図1に示した本発明に係わる高周波回路の接続構造について説明する。この例に示す高周波回路の接続構造は、各金属ケース(筐体)1、11内に載置された回路基板2、12上の回路パターン3及び13を、前記各金属ケース1、11の間に挿入配置された回路接続器4の同軸ケーブル中心導体45bを用い、当該金属ケース1、11にそれぞれ設けたケーブル貫通孔5、15を介して2箇所のはんだ付け6、16により接続したものである。
【0010】
回路接続器4は、2つのネジ貫通孔41、42及び1つのケーブル貫通孔43を有するフランジ44と、当該ケーブル貫通孔43に挿通された所定長のセミリジッドケーブル45とを備え、当該セミリジッドケーブル45のアース導体部45aを前記フランジ44の所要部に予めはんだ付け46a〜46dして構成される。
【0011】
この回路接続器4を用いて2つの高周波回路を接続する手順について説明する。まず、回路接続器4を2つの金属ケース1,11の間に挿入配置し、それぞれの金属ケースに予め設けてあるネジ貫通孔(図示省略)と前記フランジのネジ貫通孔41、42とを位置合わせした後に、当該ネジ貫通孔に図示を省略したネジを挿通するとともにナットを用いて共締めする。これにより回路接続器4は金属ケースに固定される。
【0012】
次に、同軸ケーブルの中心導体45bの一端を回路パターン3にはんだ6により接続するとともに、中心導体45bの他端を回路パターン13にはんだ16により接続する。
【0013】
以上のように本発明に係わる高周波回路の接続構造は構成されるので、組立時の回路接続のために必要な2箇所のはんだ付け(6、16)の状態が容易に目視確認できる。しかも、同軸ケーブル45のアース導体部45aに係わるはんだ付け46a〜46dは回路接続器4を構成する際に実施するので、このはんだ付けの状態も容易に目視確認ができる。
従って、本発明に係わる高周波回路の接続構造は、はんだ付けの状態を十分に目視確認することができ、その結果、はんだ付けの信頼性低下を防止することが可能となる。
【0014】
【発明の効果】
本発明は以上説明したように回路接続器を用いて密接配置される高周波回路を接続するように構成したので、はんだ付け状態の目視確認が容易となり、その結果、はんだ付けの信頼性が高い高周波回路の接続構造を実現する上で著効を奏す。
【図面の簡単な説明】
【図1】本発明に係わる高周波回路の接続構造の実施例を説明するための断面図
【図2】本発明に係わる高周波回路の接続構造において使用する回路接続器を説明する図
【図3】従来の高周波回路の接続構造例を説明する断面図
【符号の説明】
1、11・・筐体(金属ケース)
2、12・・回路基板
3、13・・回路パターン
4、14・・回路接続器
5、15・・ケーブル貫通孔
6、16・・はんだ付け
41、42・・フランジに設けたネジ貫通孔
43・・フランジに設けたケーブル貫通孔
44・・フランジ
45・・セミリジッドケーブル
45a・・セミリジッドケーブルのアース導体
45b・・セミリジッドケーブルの中心導体
46a、46b、46c、46d・・フランジ部のはんだ付け
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high-frequency circuit connection structure.
[0002]
[Prior art]
In recent years, electronic devices such as mobile phones have become widespread in society with the progress of miniaturization and price reduction. For example, mobile phones are becoming indispensable tools for our lives.
As is well known, mobile phones transmit and receive information (voice) using radio waves, and current systems mainly use 1.5 GHz band radio waves. In order to transmit and receive such radio waves, various high frequency circuits are arranged in the mobile phone.
[0003]
Conventionally, a coaxial cable having a predetermined length with connectors at both ends is generally used to connect these high-frequency circuits. However, as the demand for miniaturization of electronic equipment increases, the arrangement space is limited and the high-frequency circuits to be connected are arranged closely (adjacent), so the following connection structure that does not use connectors is used. It came to be able to.
[0004]
FIG. 3 is a cross-sectional view showing a connection structure example of two conventional high frequency circuits closely arranged. The high-frequency circuit connection structure shown in this figure has the circuit patterns 23 and 33 on the circuit boards 22 and 32 placed in the metal cases 21 and 31, respectively, and the cable through holes 24 and 34 provided in the metal cases. Semi-rigid coaxial cable 25 (semi-rigid coaxial cable, semi-flexible coaxial cable using copper tube as outer conductor, for details, see, for example, the Institute of Electronics, Information and Communication Engineers, "Antenna Engineering Handbook", p.239. , Ohm Co., 1989), and connected by soldering 26 and 36 through a central conductor 25a. Further, the outer conductor of the semi-rigid cable 25 is connected to the metal cases 21 and 31 by soldering 27a (27b) and 37a (37b).
[0005]
By adopting such a connection structure, it is possible to connect a high-frequency circuit closely arranged in a limited space.
[0006]
[Problems to be solved by the invention]
However, the conventional high-frequency circuit connection structure as described above has the following problems. In other words, part of the soldering performed to connect the high-frequency circuit during device assembly (27b, 37b) is the back side of the coaxial cable 25, making it difficult to visually check the soldering state. The problem was that the reliability of the attachment was lowered.
The present invention has been made in order to solve the above-described problems related to the connection structure of a high-frequency circuit. The soldering state for circuit connection can be easily visually confirmed, and therefore high-reliability high-reliability soldering. An object of the present invention is to provide a circuit connection structure.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention according to claim 1 of the high-frequency circuit connection structure according to the present invention is for connecting two high-frequency circuits on circuit boards housed in two housings with a coaxial cable. The coaxial cable is a semi-rigid cable, and each of the two housings has one first cable through-hole through which the semi-rigid cable is inserted into a required portion and two first screw-throughs through which screws are inserted. and a hole, two housings through two second screws to the first cable through-hole and the screw through hole and the communication to the flange has a flange to connect is disposed in a gap between the housing A circuit connector having a hole and one cable through hole is provided, and a ground portion of a predetermined length of the semi-rigid cable inserted into the second cable through hole is soldered in advance to a required portion of the flange to electrically The first and second cable through holes and the first and second screw through holes are positioned after the circuit connector is inserted and arranged between the two housings. Screws are inserted into and fixed together, and the central conductor of the semi-rigid cable is connected to the patterns on the circuit boards housed in the two cases by soldering .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on the illustrated embodiment. FIG. 1 is a cross-sectional view showing an embodiment of a high-frequency circuit connection structure according to the present invention. FIG. 2 is a view for explaining a circuit connector used in the high-frequency circuit connection structure according to the present invention, where FIG. 2 (a) is a perspective view and FIG. 2 (b) is a cross-sectional view.
[0009]
The connection structure of the high-frequency circuit according to the present invention shown in FIG. 1 will be described with reference to FIG. The connection structure of the high-frequency circuit shown in this example is that the circuit patterns 3 and 13 on the circuit boards 2 and 12 placed in the metal cases (casings) 1 and 11 are connected between the metal cases 1 and 11, respectively. Using the coaxial cable center conductor 45b of the circuit connector 4 inserted and arranged in the metal case 1, 11 connected by the soldering 6 and 16 through the cable through holes 5 and 15 provided in the metal cases 1 and 11, respectively. is there.
[0010]
The circuit connector 4 includes a flange 44 having two screw through holes 41 and 42 and one cable through hole 43, and a semi-rigid cable 45 having a predetermined length inserted through the cable through hole 43, and the semi-rigid cable 45 The ground conductor portion 45a is previously soldered 46a to 46d to the required portion of the flange 44.
[0011]
A procedure for connecting two high-frequency circuits using the circuit connector 4 will be described. First, the circuit connector 4 is inserted and arranged between the two metal cases 1 and 11, and screw through holes (not shown) provided in advance in the respective metal cases and the screw through holes 41 and 42 of the flange are positioned. After the alignment, a screw (not shown) is inserted into the screw through hole and tightened together with a nut. Thereby, the circuit connector 4 is fixed to the metal case.
[0012]
Next, one end of the central conductor 45b of the coaxial cable is connected to the circuit pattern 3 with the solder 6, and the other end of the central conductor 45b is connected to the circuit pattern 13 with the solder 16.
[0013]
Since the high-frequency circuit connection structure according to the present invention is configured as described above, the two soldering states (6, 16) necessary for circuit connection during assembly can be easily visually confirmed. Moreover, since the soldering 46a to 46d related to the ground conductor portion 45a of the coaxial cable 45 is performed when the circuit connector 4 is configured, the soldering state can be easily visually confirmed.
Therefore, the connection structure of the high-frequency circuit according to the present invention can sufficiently visually check the soldering state, and as a result, it is possible to prevent a decrease in soldering reliability.
[0014]
【The invention's effect】
Since the present invention is configured to connect high-frequency circuits that are closely arranged using a circuit connector as described above, it is easy to visually check the soldering state, and as a result, high-reliability high-frequency soldering. It is very effective in realizing the circuit connection structure.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view for explaining an embodiment of a high-frequency circuit connection structure according to the present invention. FIG. 2 is a diagram illustrating a circuit connector used in the high-frequency circuit connection structure according to the present invention. Sectional drawing explaining the connection structure example of the conventional high frequency circuit
1, 11, ... Housing (metal case)
2, 12, ... Circuit board
3, 13, ... Circuit pattern
4, 14, ... Circuit connector
5, 15 ... Cable through hole
6, 16, ... soldering
41, 42 .. Screw through holes provided in the flange
43. ・ Cable through hole in flange
44 ・ ・ Flange
45 ・ ・ Semi-rigid cable
45a ・ ・ Earth conductor of semi-rigid cable
45b ・ ・ Center conductor of semi-rigid cable
46a, 46b, 46c, 46d ・ ・ Flange soldering

Claims (1)

2つの筐体に収納された回路基板上の2つの高周波回路を同軸ケーブルにて接続するための構造であって、
前記同軸ケーブルはセミリジッドケーブルであって、
前記2つの筐体はいずれも所要部に前記セミリジッドケーブルを挿通する1つの第1のケーブル貫通孔と、ネジを挿通する2つの第1のネジ貫通孔と、を備え
前記2つの筐体を該筐体間の隙間に配置させて接続するフランジを有し、このフランジに前記第1のケーブル貫通孔及びネジ貫通孔と連通する2つの第2のネジ貫通孔と、1つの第2のケーブル貫通孔とを備えた回路接続器を具備し、
前記第2のケーブル貫通孔に挿通させた所定長の前記セミリジッドケーブルのアース部が前記フランジの所要部と予めはんだ付けされて電気的に導通し
前記回路接続器を前記2つの筐体の間に挿入配置し、前記第1及び第2のケーブル貫通孔同士と、前記第1及び第2のネジ貫通孔同士とを位置合わせした後に、当該ネジ貫通孔にネジを挿通して共締めして固定し、
前記セミリジッドケーブルの中心導体を、2つの筐体に収納された回路基板上のパターンにそれぞれはんだにより接続することを特徴とする高周波回路の接続構造。
A structure for connecting two high-frequency circuits on a circuit board housed in two housings by a coaxial cable,
The coaxial cable is a semi-rigid cable,
Each of the two housings includes a first cable through-hole through which the semi-rigid cable is inserted through a required portion, and two first screw through-holes through which a screw is inserted ,
The two housings has a flange to connect is disposed in a gap between the housing, and two second screw through hole communicating with the first cable through-hole and the screw through hole in the flange, Comprising a circuit connector having one second cable through hole,
The ground portion of the semi-rigid cable having a predetermined length inserted through the second cable through hole is pre-soldered and electrically connected to a required portion of the flange ,
The circuit connector is inserted and disposed between the two housings, and the first and second cable through holes are aligned with the first and second screw through holes, and then the screw is connected. Insert the screw into the through hole and fasten it together.
A high-frequency circuit connection structure, wherein the central conductor of the semi-rigid cable is connected to a pattern on a circuit board accommodated in two housings by soldering .
JP24423099A 1999-08-31 1999-08-31 High-frequency circuit connection structure Expired - Lifetime JP4162337B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24423099A JP4162337B2 (en) 1999-08-31 1999-08-31 High-frequency circuit connection structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24423099A JP4162337B2 (en) 1999-08-31 1999-08-31 High-frequency circuit connection structure

Publications (2)

Publication Number Publication Date
JP2001068873A JP2001068873A (en) 2001-03-16
JP4162337B2 true JP4162337B2 (en) 2008-10-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP24423099A Expired - Lifetime JP4162337B2 (en) 1999-08-31 1999-08-31 High-frequency circuit connection structure

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