JP2004241446A - Electronic control device - Google Patents

Electronic control device Download PDF

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Publication number
JP2004241446A
JP2004241446A JP2003026579A JP2003026579A JP2004241446A JP 2004241446 A JP2004241446 A JP 2004241446A JP 2003026579 A JP2003026579 A JP 2003026579A JP 2003026579 A JP2003026579 A JP 2003026579A JP 2004241446 A JP2004241446 A JP 2004241446A
Authority
JP
Japan
Prior art keywords
electronic control
control device
printed circuit
ceramic substrate
circuit board
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.)
Granted
Application number
JP2003026579A
Other languages
Japanese (ja)
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JP2004241446A5 (en
JP3931145B2 (en
Inventor
Yasunori Odakura
安則 小田倉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Hitachi Automotive Systems Engineering Co Ltd
Original Assignee
Hitachi Ltd
Hitachi Car Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, Hitachi Car Engineering Co Ltd filed Critical Hitachi Ltd
Priority to JP2003026579A priority Critical patent/JP3931145B2/en
Publication of JP2004241446A publication Critical patent/JP2004241446A/en
Publication of JP2004241446A5 publication Critical patent/JP2004241446A5/ja
Application granted granted Critical
Publication of JP3931145B2 publication Critical patent/JP3931145B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost electronic control device in which a connector terminal can be electrically connected to a ceramic substrate without raising the accuracies of the size and the surface of a wire bonding part and without using a surface treatment having a restriction, and which can prevent a fault of a wire disconnection, etc. due to the stress generated at a connecting part. <P>SOLUTION: In a conductive plate like a printed circuit board, the connector terminal can be connected to the ceramic substrate of the electronic control device. The connector terminal is connected to the printed circuit board with the solder inserted into the hole provided at the printed circuit board. The printed board is wired to the ceramic substrate by a plurality of wires. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、電子部品を搭載し回路を構成したセラミック基板と、前記セラミック基板とを収容するケースと、前記ケースに合致するコネクタで構成された電子制御装置に係わり、コネクタの端子とセラミック基板とを、複数個のワイヤで結線する電子制御装置の構造に関する。
【0002】
【従来の技術】
従来、この種の電子制御装置として、特開平11−86933号公報に記載のようなものが知られている。この従来の構造は、電気回路を構成した基板と、前記基板を収納するケースと、該ケースに一体化されたコネクタとからなる制御装置において、前記基板と前記コネクタとの間を複数個のワイヤで結線する構造となっている。また、特開平5−335759号公報に記載のようにアルミベースにハイブリッドIC基板を接着剤により取付け、コネクタ部を一体形成したプラスチックケースを接着剤により前記アルミベースに取付けてある。そしてコネクタ端子及びセンサーターミナルは、ニッケルワイヤやアルミワイヤでハイブリッドIC基板と電気的接続を行っている。
【0003】
【特許文献1】
特開平11−86933号公報
【特許文献2】
特開平5−335759号公報
【0004】
【発明が解決しようとする課題】
しかしながら従来の電子制御装置は、電気回路を構成した基板と、前記基板を収納するケースと、該ケースに一体化されたコネクタとからなる制御装置において、前記基板と前記コネクタとの間を複数個のワイヤで結線する構造となっているため、ワイヤボンディング接続可能な専用のコネクタが必要となる。
【0005】
このワイヤボンディング用のコネクタは、端子のワイヤボンディング部の傾き,面粗さ等を高精度に管理する必要がある上、表面処理の種類が制限され、コスト高となるという問題があった。
【0006】
また、このコスト高の点から少量生産機種への適用が困難であるという問題もあった。
【0007】
【課題を解決するための手段】
本発明は上記課題を解決するために、電子部品を搭載し回路を構成したセラミック基板と、これを収容するケースと、前記ケースに合致するコネクタで構成された電子制御装置において、前記コネクタ端子とはんだ接続すると共に、前記セラミック基板と複数個のワイヤで接続可能なプリント基板のような導電体を設けた。
【0008】
また、本発明は、コネクタ端子とプリント基板とは、コネクタ端子をプリント基板に設けた穴に挿入しはんだにて接続すると共に、プリント基板とセラミック基板とを、複数個のボンディングワイヤにて結線する。また、ケースには、プリント基板とセラミック基板とをボンディングワイヤで結線する際の、プリント基板の剛性をUPさせるための補強座を設けた。
【0009】
さらに、本発明は、コネクタ端子とはんだ接続すると共に、セラミック基板と複数個のワイヤで接続可能であり、かつコネクタ端子の近傍にノイズ対策のためのコンデンサを搭載したプリント基板のような導電体を介して接続した。
【0010】
これらにより、従来ワイヤボンディング部の寸法および面の高精度化,表面処理の制約等が要求されたワイヤボンディング接続用のコネクタを用いることなく、コネクタ端子とセラミック基板とを電気的に接続することができるため、安価な電子制御装置を提供することができる。
【0011】
【発明の実施の形態】
以下、本発明の実施例を図1から図3により説明する。図1は本実施例が関わる第1の電子制御装置を示す斜視図であり、図2はその断面図である。
【0012】
本実施例は、電子部品を搭載し回路を構成したセラミック基板6,前記セラミック基板を収容するベース1,カバー2,外部の機器と電気的に接続するためのコネクタ3,コネクタ端子4とセラミック基板6とを電気的に接続するためのプリント基板5,セラミック基板6とプリント基板5とを電気的に接続するためのボンディングワイヤ7で構成されており、電子制御装置は、ベース1の取付部
11をネジ等により、取付けられる。
【0013】
セラミック基板6は、接着剤10によりベース1固定されており、コネクタ3はプリント基板5に設けたコネクタ端子4を接続するための接続穴52に挿入し、はんだ接合した後、接着剤10によりベース1固定されている。ベース1に固定されたプリント基板5とセラミック基板6は、複数個のボンディングワイヤ7により電気的に接続される。最後にカバー2を接着剤10によりベース1に固定し、前記プリント基板5とセラミック基板6が収容されている。また、前記ベース1には前記プリント基板5を前記セラミック基板6とをボンディングワイヤ7で結線する際の、プリント基板5のボンディングワイヤ接続部51の剛性をUPさせるための補強座12を設けている。
【0014】
これにより、コネクタ端子4とプリント基板5とは、L字形状としたコネクタ端子4を、プリント基板5に設けた接続穴52に挿入しはんだ接合した後、プリント基板5とセラミック基板6とを、ボンディングワイヤ7で接続されることにより、各々の接続部に発生する熱および機械的応力をL字形状のコネクタ端子4とボンディングワイヤ7で吸収させることができるため、コネクタ端子接続部であるはんだ接続部53に発生する応力による断線等の不具合も防止される。
【0015】
次に、本発明の第2の実施例を図3により説明する。図3は本実施例が関わる第2の電子制御装置を示す断面図である。
【0016】
本実施例は、第1の実施例と同一構造であるが、第1の実施例ではその他の電子部品9と共に、セラミック基板6に搭載していたコネクタ端子4の各入出力信号を安定させるためのコンデンサ8を、プリント基板5に搭載させることにより、セラミック基板6を小型化した。
【0017】
【発明の効果】
本発明によれば、コネクタ端子とセラミック基板とを、プリント基板を介してワイヤ接続することで、従来ワイヤボンディング部の寸法および面の高精度化,表面処理の制約等が要求されたワイヤボンディング接続用のコネクタを用いることなく、前記コネクタ端子と前記セラミック基板とを電気的に接続することができる。
【0018】
また、コネクタ端子とプリント基板とは、L字形状としたコネクタ端子を、プリント基板に設けた穴に挿入しはんだ接合した後、プリント基板とセラミック基板とを、ボンディングワイヤで接続することにより、各々の接続部に発生する熱および機械的応力をL字形状端子とボンディングワイヤで吸収させることができるため、接続部に発生する応力による断線等の不具合も防止できる。
【0019】
さらに、プリント基板のコネクタ端子接続部近傍にノイズ対策のためのコンデンサを搭載させることにより、高価なセラミック基板を小型化することができ、コスト低減を図ることもできる。
【0020】
これらにより、高温環境への設置も可能であり、かつ少量生産製品にも適用できる安価な制御装置を提供することができる。
【図面の簡単な説明】
【図1】実施例1の電子制御装置を示す斜視図。
【図2】実施例1の電子制御装置を示す断面図。
【図3】実施例2の導体保持構造を示す断面図。
【符号の説明】
1…ベース、2…カバー、3…コネクタ、4…コネクタ端子、5…プリント基板、6…セラミック基板、7…ボンディングワイヤ、8…コンデンサ、9…その他の電子部品、10…接着剤、11…取付部、12…補強座、51…プリント基板のボンディングワイヤ接続部、52…コネクタ端子接続穴、53…はんだ接続部、61…セラミック基板のボンディングワイヤ接続部。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ceramic substrate on which a circuit is mounted by mounting electronic components, a case accommodating the ceramic substrate, and an electronic control device including a connector that matches the case. To a structure of an electronic control unit for connecting the electronic control unit with a plurality of wires.
[0002]
[Prior art]
Conventionally, as this type of electronic control device, one described in Japanese Patent Application Laid-Open No. 11-86933 has been known. In this conventional structure, in a control device including a board constituting an electric circuit, a case accommodating the board, and a connector integrated with the case, a plurality of wires are provided between the board and the connector. It is structured to be connected by. Further, as described in JP-A-5-335759, a hybrid IC substrate is attached to an aluminum base with an adhesive, and a plastic case integrally formed with a connector portion is attached to the aluminum base with an adhesive. The connector terminals and the sensor terminals are electrically connected to the hybrid IC board by nickel wires or aluminum wires.
[0003]
[Patent Document 1]
JP-A-11-86933 [Patent Document 2]
JP-A-5-335759 [0004]
[Problems to be solved by the invention]
However, in a conventional electronic control device, a control device including a board constituting an electric circuit, a case for accommodating the board, and a connector integrated with the case includes a plurality of connectors between the board and the connector. Therefore, a dedicated connector capable of wire bonding connection is required.
[0005]
This wire bonding connector has a problem that the inclination, surface roughness, etc. of the wire bonding portion of the terminal must be managed with high precision, and the type of surface treatment is restricted, resulting in an increase in cost.
[0006]
In addition, there is a problem that it is difficult to apply to a small production model due to the high cost.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a ceramic substrate on which electronic components are mounted to form a circuit, a case accommodating the ceramic substrate, and an electronic control device including a connector matching the case. A conductor such as a printed circuit board that can be connected to the ceramic substrate with a plurality of wires while being connected by solder was provided.
[0008]
Further, according to the present invention, the connector terminal and the printed board are inserted into a hole provided in the printed board and connected by soldering, and the printed board and the ceramic board are connected by a plurality of bonding wires. . Further, the case was provided with a reinforcing seat for increasing the rigidity of the printed board when connecting the printed board and the ceramic board with bonding wires.
[0009]
Further, the present invention provides a conductor such as a printed circuit board which is connected to the ceramic substrate by a plurality of wires while being connected to the connector terminal by soldering, and having a capacitor for noise suppression near the connector terminal. Connected through.
[0010]
As a result, the connector terminals and the ceramic substrate can be electrically connected without using a connector for wire bonding connection, which has conventionally required the dimension and surface precision of the wire bonding portion and restrictions on surface treatment. Therefore, an inexpensive electronic control device can be provided.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing a first electronic control device according to the present embodiment, and FIG. 2 is a sectional view thereof.
[0012]
In the present embodiment, a ceramic substrate 6, on which electronic components are mounted and which constitutes a circuit, a base 1 for housing the ceramic substrate, a cover 2, a connector 3 for electrically connecting to an external device, a connector terminal 4, and a ceramic substrate And a bonding wire 7 for electrically connecting the ceramic substrate 6 and the printed board 5 to each other. The electronic control device includes a mounting portion 11 of the base 1. Can be attached with screws or the like.
[0013]
The ceramic substrate 6 is fixed to the base 1 with an adhesive 10, and the connector 3 is inserted into a connection hole 52 for connecting the connector terminal 4 provided on the printed circuit board 5, and is solder-joined. 1 is fixed. The printed board 5 and the ceramic board 6 fixed to the base 1 are electrically connected by a plurality of bonding wires 7. Finally, the cover 2 is fixed to the base 1 with an adhesive 10, and the printed board 5 and the ceramic board 6 are accommodated therein. Further, the base 1 is provided with a reinforcing seat 12 for increasing the rigidity of the bonding wire connection portion 51 of the printed board 5 when the printed board 5 is connected to the ceramic board 6 with the bonding wires 7. .
[0014]
As a result, the connector terminal 4 and the printed board 5 are connected to each other by inserting the L-shaped connector terminal 4 into the connection hole 52 provided in the printed board 5 and soldering the same. The connection by the bonding wire 7 allows the heat and mechanical stress generated in each connection portion to be absorbed by the L-shaped connector terminal 4 and the bonding wire 7, so that the solder connection as the connector terminal connection portion Problems such as disconnection due to stress generated in the portion 53 are also prevented.
[0015]
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a sectional view showing a second electronic control unit according to the present embodiment.
[0016]
This embodiment has the same structure as the first embodiment. However, in the first embodiment, in addition to the other electronic components 9, each input / output signal of the connector terminal 4 mounted on the ceramic substrate 6 is stabilized. The ceramic substrate 6 was miniaturized by mounting the capacitor 8 on the printed circuit board 5.
[0017]
【The invention's effect】
According to the present invention, the wire connection between the connector terminal and the ceramic substrate is performed via the printed circuit board, so that the wire bonding connection conventionally required to improve the dimensions and the surface accuracy of the wire bonding portion and to restrict the surface treatment. The connector terminal and the ceramic substrate can be electrically connected without using a connector for the connector.
[0018]
In addition, the connector terminal and the printed circuit board are connected by bonding the L-shaped connector terminal to a hole provided in the printed circuit board and soldering, and then connecting the printed circuit board and the ceramic substrate with bonding wires. Can be absorbed by the L-shaped terminal and the bonding wire, so that problems such as disconnection due to the stress generated at the connection portion can also be prevented.
[0019]
Further, by mounting a capacitor for noise suppression near the connector terminal connection portion of the printed circuit board, the expensive ceramic substrate can be reduced in size and cost can be reduced.
[0020]
Thus, it is possible to provide an inexpensive control device that can be installed in a high-temperature environment and can be applied to small-volume production products.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an electronic control device according to a first embodiment.
FIG. 2 is a cross-sectional view illustrating the electronic control device according to the first embodiment.
FIG. 3 is a sectional view showing a conductor holding structure according to a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Base, 2 ... Cover, 3 ... Connector, 4 ... Connector terminal, 5 ... Printed circuit board, 6 ... Ceramic board, 7 ... Bonding wire, 8 ... Capacitor, 9 ... Other electronic components, 10 ... Adhesive, 11 ... Attachment portion, 12: reinforcement seat, 51: bonding wire connection portion of printed circuit board, 52: connector terminal connection hole, 53: solder connection portion, 61: bonding wire connection portion of ceramic substrate.

Claims (4)

電子部品を搭載し回路を構成したセラミック基板と、これを収容するケースと、前記ケースに合致するコネクタで構成された電子制御装置において、前記コネクタ端子とはんだ接続すると共に、前記セラミック基板と複数個のワイヤで接続可能な導電体を設けたことを特徴とする電子制御装置。In an electronic control device including a ceramic substrate on which a circuit is mounted by mounting electronic components, a case accommodating the same, and a connector matching the case, the ceramic terminal is connected to the connector terminal by soldering, and An electronic control device comprising a conductor that can be connected by a wire. 請求項1記載の電子制御装置であって、前記コネクタ端子とはんだ接続すると共に、前記セラミック基板と複数個のワイヤで接続可能なプリント基板を設けたことを特徴とする電子制御装置。2. The electronic control device according to claim 1, further comprising a printed circuit board that is connected to the connector terminal by soldering and that can be connected to the ceramic substrate by a plurality of wires. 請求項2記載の電子制御装置であって、前記コネクタ端子と前記プリント基板とは、前期コネクタ端子を前記プリント基板に設けた穴に挿入し、はんだにて接合すると共に、前記プリント基板と前記セラミック基板とを、複数個のボンディングワイヤにて結線する。また、前記ケースには前記プリント基板をセラミック基板とをボンディングワイヤで結線する際の、プリント基板の剛性をUPさせるための補強座を設けたことを特徴とする電子制御装置。3. The electronic control device according to claim 2, wherein the connector terminal and the printed circuit board are inserted into a hole provided in the printed circuit board, and are joined by soldering. The substrate is connected with a plurality of bonding wires. Further, the case is provided with a reinforcing seat for increasing the rigidity of the printed circuit board when the printed circuit board is connected to the ceramic substrate with bonding wires. 請求項1,2,3記載の電子制御装置であって、前記コネクタ端子とはんだ接続すると共に、前記セラミック基板と複数個のワイヤで接続可能であり、かつコネクタ端子の近傍にノイズ対策のためのコンデンサを搭載したプリント基板のような導電体を介して接続したことを特徴とする電子制御装置。4. The electronic control device according to claim 1, wherein said electronic control unit is connected to said connector terminal by soldering, is connectable to said ceramic substrate by a plurality of wires, and is provided near said connector terminal for noise suppression. An electronic control unit connected via a conductor such as a printed circuit board on which a capacitor is mounted.
JP2003026579A 2003-02-04 2003-02-04 Electronic control unit Expired - Fee Related JP3931145B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003026579A JP3931145B2 (en) 2003-02-04 2003-02-04 Electronic control unit

Publications (3)

Publication Number Publication Date
JP2004241446A true JP2004241446A (en) 2004-08-26
JP2004241446A5 JP2004241446A5 (en) 2005-04-14
JP3931145B2 JP3931145B2 (en) 2007-06-13

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Family Applications (1)

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Country Status (1)

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