JP3193907U - Occupant restraint device control device - Google Patents

Occupant restraint device control device Download PDF

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JP3193907U
JP3193907U JP2014600039U JP2014600039U JP3193907U JP 3193907 U JP3193907 U JP 3193907U JP 2014600039 U JP2014600039 U JP 2014600039U JP 2014600039 U JP2014600039 U JP 2014600039U JP 3193907 U JP3193907 U JP 3193907U
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circuit board
electronic circuit
resin case
electronic
ground terminal
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啓二 堀部
啓二 堀部
健太郎 秋山
健太郎 秋山
田尻　剛
剛 田尻
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Autoliv Development AB
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0073—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having specific features for mounting the housing on an external structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0239—Electronic boxes

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

【課題】電子回路基板への電子部品の取り付け位置を考慮することで、低温度化を図って放熱フィン等の省略を可能とし、省資源化を図れる乗員拘束装置制御装置を提供する。【解決手段】起動用信号を出す制御回路を組み込んだ電子回路基板２と、これを収容して覆う樹脂ケース１及び裏蓋４と、電子回路基板２の外部へのアースを行うグランド端子３を有する。グランド端子３は形状を自立的に維持できる厚みの金属製プレートで、このグランド端子３の一端側を樹脂ケース１の取付け部１ａの一箇所に設ける。取付け部１ａである樹脂ケース１の角部を樹脂ケース１の内側に向かって凹ませた部分に沿って電子回路基板２の角部を切欠く。切欠いた部分より電子回路基板２の中央部側にグランド端子３の他端部が接続される接続点から半径２５mm内に他の電子部品よりも発熱量の大きい電子部品を少なくとも一つ配置する。【選択図】図１Provided is an occupant restraint device control apparatus that can reduce the temperature and reduce the need for heat dissipating fins and the like by considering the mounting position of an electronic component on an electronic circuit board. An electronic circuit board 2 incorporating a control circuit for issuing a start signal, a resin case 1 and a back cover 4 that accommodate and cover the circuit board, and a ground terminal 3 for grounding the outside of the electronic circuit board 2 are provided. Have. The ground terminal 3 is a metal plate having a thickness that can maintain its shape independently, and one end side of the ground terminal 3 is provided at one place of the mounting portion 1 a of the resin case 1. A corner portion of the electronic circuit board 2 is cut out along a portion where the corner portion of the resin case 1 as the attachment portion 1a is recessed toward the inside of the resin case 1. At least one electronic component that generates a larger amount of heat than other electronic components is disposed within a radius of 25 mm from the connection point at which the other end of the ground terminal 3 is connected to the center of the electronic circuit board 2 from the notched portion. [Selection] Figure 1

Description

本発明は、安全装置として自動車に設置されるエアバッグ等の乗員拘束具の起動を電気的に制御する、乗員拘束装置制御装置に関するものである。   The present invention relates to an occupant restraint device control apparatus that electrically controls activation of an occupant restraint device such as an air bag installed in an automobile as a safety device.

例えば、ガスによりエアバッグを展開させることによって、衝突の際の衝撃から乗員を保護する乗員拘束装置は、乗員拘束装置制御装置によってその起動を電気的に制御されている。   For example, an occupant restraint device that protects an occupant from an impact at the time of a collision by deploying an air bag with gas is electrically controlled by an occupant restraint device control device.

この乗員拘束装置制御装置は、加速度又は減速度を検出するセンサーと、センサーの検出出力に基づいて車両の衝突を判定し、エアバッグを展開するための制御信号を出力する制御回路が組み込まれた電子回路基板を備えた構成である。   This occupant restraint device control device incorporates a sensor that detects acceleration or deceleration, and a control circuit that determines a vehicle collision based on the detection output of the sensor and outputs a control signal for deploying the airbag. It is the structure provided with the electronic circuit board.

近年、軽量化の要求から電子回路基板を収納するケースの樹脂化が求められているが、この場合は、電子回路基板と樹脂ケースの車両への取付け部間をグランド端子で繋ぐことで、電子機器の安定化のためのアースを行っている（例えば特許文献１）。   In recent years, there has been a demand for resinization of a case for storing an electronic circuit board due to a demand for weight reduction. In this case, an electronic circuit board and a resin case attached to a vehicle are connected by a ground terminal to connect the electronic circuit board and the resin case. Grounding is performed to stabilize the equipment (for example, Patent Document 1).

この際、車両への取付け部の全箇所にグランド端子を設置すると、車両への取り付け時の締付け力の相違により、互いのグランド端子間に電位差が生じるため、全てのグランド端子間の電気的結合を強くするか、全箇所にＥＭＣ（Electro-Magnetic Compatibility）対策を講じる必要がある。   At this time, if ground terminals are installed at all locations on the mounting portion to the vehicle, a potential difference occurs between the ground terminals due to the difference in tightening force when mounting to the vehicle. It is necessary to take EMC (Electro-Magnetic Compatibility) measures at all locations.

従って、ＥＭＣ対策を一箇所のみとするために、車両への一箇所の取付け部だけでグランド端子で繋いでアースをとっている。   Therefore, in order to make the EMC countermeasure only at one place, the ground terminal is connected to the ground at only one attachment portion to the vehicle to take the ground.

ところで、電子回路基板に取り付ける電子部品には、発熱量の多い電子部品と少ない電子部品があるが、従来は、これら電子部品の電子回路基板への取り付け位置に関して考慮されることは無かった。   By the way, although there are electronic components with a large amount of heat generation and electronic components with a small amount of heat generation as electronic components attached to the electronic circuit board, conventionally, there has been no consideration regarding the attachment position of these electronic components to the electronic circuit board.

特開２００３−２６０９９２号公報JP 2003-260992 A

本発明が解決しようとする問題点は、電子回路基板に取り付ける電子部品には、発熱量の多い電子部品と少ない電子部品があるが、従来は、これら電子部品の電子回路基板への取り付け位置に関して考慮されることは無かったという点である。   The problem to be solved by the present invention is that electronic components attached to an electronic circuit board include electronic parts with a large amount of heat generation and electronic parts with a small amount of heat. Conventionally, these electronic parts are attached to the electronic circuit board. It was not considered.

本発明の乗員拘束装置制御装置は、電子回路基板への電子部品の取り付け位置を考慮することで、乗員拘束装置制御装置の低温度化を図って放熱フィン等の省略を可能とし、省資源化を図ることを目的としている。   The occupant restraint device control device of the present invention can reduce the temperature of the occupant restraint device control device by considering the mounting position of the electronic component on the electronic circuit board, and can omit the radiation fins, etc. It aims to plan.

すなわち、本発明の乗員拘束装置制御装置は、
車両の加速度又は減速度を検出するセンサーの検出出力に基づいて車両の衝突か否かを判定し、乗員拘束具を起動するための制御信号を出力する制御回路を組み込んだ電子回路基板と、
この電子回路基板を収容し、車両への取付け部を有する樹脂ケースと、
前記電子回路基板を収容した樹脂ケースの裏面開口部を覆う裏蓋と、
前記電子回路基板の外部へのアースを行うグランド端子と、
を有し、
前記グランド端子は、プレート形状を自立的に維持できる厚みを有する金属製のプレートで形成され、
前記樹脂ケースは、車両への取付け部である角部を内側に凹ませ、
前記電子回路基板は、前記樹脂ケースの角部の前記内側に凹ませた部分に沿って角部を切欠いた形状とし、
一端部を前記樹脂ケースの取付け部の一箇所に接続した前記グランド端子の他端部を、前記電子回路基板の切欠いた部分より中央部側の電子回路基板上に設けられた接続点に接続し、かつ、
この接続点から半径２５mm内の前記電子回路基板上に他の電子部品よりも発熱量の大きい電子部品が少なくとも一つ配置されていることを最も主要な特徴としている。That is, the occupant restraint device control device of the present invention is
An electronic circuit board that incorporates a control circuit that determines whether or not a vehicle has collided based on a detection output of a sensor that detects acceleration or deceleration of the vehicle and outputs a control signal for activating an occupant restraint;
A resin case that houses this electronic circuit board and has a mounting portion to the vehicle,
A back cover covering the back opening of the resin case containing the electronic circuit board;
A ground terminal for grounding to the outside of the electronic circuit board;
Have
The ground terminal is formed of a metal plate having a thickness capable of independently maintaining the plate shape,
The resin case has an indented corner that is an attachment to the vehicle,
The electronic circuit board has a shape in which a corner portion is cut out along a portion recessed in the inside of the corner portion of the resin case,
The other end of the ground terminal having one end connected to one place of the mounting portion of the resin case is connected to a connection point provided on the electronic circuit board on the center side from the notched portion of the electronic circuit board. ,And,
The most important feature is that at least one electronic component having a larger heating value than other electronic components is arranged on the electronic circuit board within a radius of 25 mm from this connection point.

本発明は、車両への取付け部とする樹脂ケースの角部を内側に凹ませ、この凹ませた部分に沿って電子回路基板の角部を切欠いた形状とするので、電子回路基板のグランド端子の接続点周りの面積が単なるコーナ部よりも広くなる。従って、発熱量の大きい電子部品を接続点の周りによりたくさん配置することができる。   In the present invention, the corner portion of the resin case serving as the attachment portion to the vehicle is recessed inward, and the corner portion of the electronic circuit board is cut out along the recessed portion. The area around the connection point is wider than a simple corner. Accordingly, it is possible to arrange a larger number of electronic components with a large amount of heat generation around the connection point.

本発明において、「プレート形状を自立的に維持できる厚み」とは、その金属プレート単体を何も支えのない状態で机上に置いた時に、当該金属プレートが、その自重等によって変形することがほとんどなく、金属プレート単体の形がほぼそのままの形状を保つことができる厚みをいう。例えば金属箔は紙のように容易に変形するので、本願でいう金属製のプレートには含まれない。好ましくは、０．１mm以上の厚みを有する場合を言う。   In the present invention, the “thickness capable of maintaining the plate shape independently” means that when the metal plate is placed on a desk without any support, the metal plate is almost deformed by its own weight or the like. In other words, the thickness of the metal plate can be kept as it is. For example, a metal foil is easily deformed like paper and is not included in the metal plate referred to in this application. Preferably, the case where it has the thickness of 0.1 mm or more is said.

本発明では、電子回路基板上へのグランド端子の接続点周りに、発熱量の大きい電子部品をよりたくさん配置することができるので、グランド端子を介する効果的な熱伝導が可能となって、発熱量の大きい電子部品の表面温度が低下する。その結果、放熱フィン等を省略することが可能となって、省資源化が図れることになる。   In the present invention, since more electronic components having a large amount of heat generation can be arranged around the connection point of the ground terminal on the electronic circuit board, effective heat conduction through the ground terminal becomes possible and heat generation The surface temperature of a large amount of electronic components decreases. As a result, it is possible to omit heat radiating fins and the like, and resource saving can be achieved.

本発明の乗員拘束装置制御装置を底面側から見た図である。It is the figure which looked at the crew member restraint device control device of the present invention from the bottom side. 本発明の乗員拘束装置制御装置の外観を表面側から示す斜視図である。It is a perspective view which shows the external appearance of the passenger | crew restraint apparatus control apparatus of this invention from the surface side. 本発明の乗員拘束装置制御装置を構成する電子回路基板と電子回路基板に取り付ける電子部品を表面側から見た図である。It is the figure which looked at the electronic component which attaches to the electronic circuit board which comprises the passenger | crew restraint apparatus control apparatus of this invention, and an electronic circuit board from the surface side. （ａ）は本発明の乗員拘束装置制御装置の特徴を説明するグランド端子の他端部と接続する接続点の近傍を示した図、（ｂ）（ｃ）は従来の構成を説明する（ａ）と同様の図である。(A) is the figure which showed the vicinity of the connection point connected with the other end part of the ground terminal explaining the characteristic of the passenger | crew restraint apparatus control apparatus of this invention, (b) (c) demonstrates the conventional structure (a ).

本発明は、乗員拘束装置制御装置の低温度化を図って放熱フィン等の省略を可能とし、省資源化を図ることを目的とするものである。そして、その目的を、車両への取付け部とする樹脂ケースの角部を樹脂ケースの内側に凹ませ、この凹ませた部分に沿って電子回路基板の角部を切欠いた形状と成すことで実現した。   An object of the present invention is to reduce the temperature of an occupant restraint device control device, thereby enabling a heat dissipating fin and the like to be omitted, and to save resources. And the purpose is realized by forming the corner part of the resin case as the attachment part to the vehicle into the inside of the resin case and making the shape of the corner part of the electronic circuit board cut out along this recessed part. did.

以下、本発明を実施するための実施例を、図１〜図４を用いて説明する。
１は樹脂ケースであり、底面と一方の側面が開口した箱型形状をしている。本発明では、この樹脂ケース１の底面開口部の外周側の例えば三箇所の角部に車両への取付け部１ａを設けている。そして、この取付け部１ａを設けた樹脂ケース１の例えば三箇所全ての角部を、図１に示すように、樹脂ケース１の各辺から直交する直線方向の内側に１５〜３０mm凹ませている。Hereinafter, an embodiment for carrying out the present invention will be described with reference to FIGS.
Reference numeral 1 denotes a resin case, which has a box shape with an open bottom surface and one side surface. In the present invention, mounting portions 1a to the vehicle are provided at, for example, three corners on the outer peripheral side of the bottom opening of the resin case 1. Then, for example, all three corners of the resin case 1 provided with the mounting portion 1a are recessed 15 to 30 mm inward in the linear direction orthogonal to each side of the resin case 1 as shown in FIG. .

２は前記樹脂ケース１の内部に収容される電子回路基板である。この電子回路基板２には、車両の加速度又は減速度を検出するセンサーの検出出力に基づいて車両の衝突か否かを判定し、例えばエアバッグを起動するための制御信号を出力する制御回路が組み込まれている。   Reference numeral 2 denotes an electronic circuit board accommodated in the resin case 1. The electronic circuit board 2 includes a control circuit that determines whether or not the vehicle has collided based on a detection output of a sensor that detects acceleration or deceleration of the vehicle, and outputs a control signal for starting an airbag, for example. It has been incorporated.

本発明では、電子回路基板２の形状を、前記樹脂ケース１の内面形状と相似形、すなわち、樹脂ケース１の取付け部１ａを設けた三箇所の角部の前記内側に凹ませた部分に沿って、電子回路基板２の角部を切欠いた形状としている。そして、この切欠いた部分より中央部側の電子回路基板２上に、電子回路基板２から樹脂ケース１の取付け部１ａを介して外部にアースを行うためのグランド端子３の接続点２ａを設けている。   In the present invention, the shape of the electronic circuit board 2 is similar to the shape of the inner surface of the resin case 1, that is, along the indented portions on the inside of the three corners where the mounting portions 1a of the resin case 1 are provided. Thus, the corner portion of the electronic circuit board 2 is cut out. Then, a connection point 2a of the ground terminal 3 for grounding from the electronic circuit board 2 to the outside through the mounting portion 1a of the resin case 1 is provided on the electronic circuit board 2 closer to the center than the notched portion. Yes.

前記グランド端子３は、金属製のプレートで形成され、当該金属製プレートのプレート形状を自立的に維持できる、例えば０．１mm以上の厚みを有している。そして、この金属製のプレートの一端部を前記樹脂ケース１の取付け部１ａの一箇所に、他端部を電子回路基板２上の前記接続点２ａに位置させて接続している。   The ground terminal 3 is formed of a metal plate, and has a thickness of, for example, 0.1 mm or more so that the plate shape of the metal plate can be maintained independently. Then, one end of the metal plate is connected to one position of the mounting portion 1 a of the resin case 1 and the other end is connected to the connection point 2 a on the electronic circuit board 2.

４は電子回路基板２を収容した樹脂ケース１の底面開口部を覆うように、樹脂ケース１の底面側に取り付けられる裏蓋である。   A back cover 4 is attached to the bottom surface side of the resin case 1 so as to cover the bottom surface opening of the resin case 1 containing the electronic circuit board 2.

本発明は、樹脂ケース１と電子回路基板２を前記形状となすと共に、電子回路基板２の接続点２ａから半径２５mmの範囲内、より好ましくは２０mmの範囲内に、他の電子部品５ａに比べて発熱量の大きい電子部品５ｂを可能な限り配置するものである。ここで、発熱量の大きい電子部品５ｂとは、主に電源回路等の集積回路部品をいう。部品内部にトランジスタ等の半導体部品を複数含み、当該部品の作動中に、その内部に例えば８５℃を超すような部品を少なくとも含むような集積回路部品が発熱量の大きい電子部品５ｂである。   In the present invention, the resin case 1 and the electronic circuit board 2 are shaped as described above, and within a radius of 25 mm from the connection point 2 a of the electronic circuit board 2, more preferably within a range of 20 mm, compared to other electronic components 5 a. Thus, the electronic component 5b having a large calorific value is arranged as much as possible. Here, the electronic component 5b having a large calorific value mainly refers to an integrated circuit component such as a power supply circuit. An electronic circuit component 5b that generates a large amount of heat is an integrated circuit component that includes a plurality of semiconductor components such as transistors inside the component and includes at least a component that exceeds, for example, 85 ° C. during operation of the component.

このような角部を切欠いた形状の電子回路基板２の場合（図４（ａ）参照）、角部を切欠かない単なるコーナ部（図４（ｂ）参照）や、電子回路基板２ｂの一辺の近傍に接続点２ａを設けた場合（図４（ｃ）参照）よりも、接続点２ａ周りの面積が広くなる。   In the case of the electronic circuit board 2 having such a corner-cut shape (see FIG. 4A), a simple corner portion (see FIG. 4B) that does not cut the corner, or one side of the electronic circuit board 2b. The area around the connection point 2a is larger than when the connection point 2a is provided in the vicinity (see FIG. 4C).

このような作用効果を奏するために、樹脂ケース１の角部を内側に凹ませる範囲は、先に説明したように１５mm以上とすることが望ましいのである。一方、３０mmを超えた場合は、電子回路基板２の面積が小さくなって、所定の制御回路を組み込めなくなるため、３０mm以下とすることが望ましい。   In order to achieve such effects, it is desirable that the range in which the corners of the resin case 1 are recessed inward is 15 mm or more as described above. On the other hand, if it exceeds 30 mm, the area of the electronic circuit board 2 becomes small and a predetermined control circuit cannot be incorporated.

従って、本発明は、図４（ｂ）（ｃ）に示した電子回路基板２に比べて、発熱量の大きな電子部品５ｂを接続点２ａの周りの熱伝導の良好な位置にたくさん配置することができ、電子部品５ｂの表面温度を低下することができる。   Therefore, in the present invention, a large number of electronic components 5b having a large amount of heat generation are arranged at positions where heat conduction is good around the connection point 2a as compared with the electronic circuit board 2 shown in FIGS. The surface temperature of the electronic component 5b can be lowered.

このような作用効果を奏するために、すなわち電子回路基板２の接続点２ａから半径２５mmを超える範囲では熱伝導が悪くなって、電子部品の表面温度の低下が期待できないから、本発明では半径２５mmの範囲内としているのである。   In order to achieve such an effect, that is, in a range exceeding the radius 25 mm from the connection point 2 a of the electronic circuit board 2, the heat conduction is deteriorated, and a decrease in the surface temperature of the electronic component cannot be expected. It is within the range.

ちなみに、より好ましい、電子回路基板２の接続点２ａから半径２０mmの範囲内に発熱量の大きい電子部品５ｂを設置した場合、周囲の温度が８５℃の高温環境下において、当該電子部品５ｂの表面温度が最大３℃程度下がることが確認された。   Incidentally, when the electronic component 5b having a large calorific value is installed within a radius of 20 mm from the connection point 2a of the electronic circuit board 2, the surface of the electronic component 5b in a high temperature environment with an ambient temperature of 85 ° C. It was confirmed that the temperature dropped by a maximum of about 3 ° C.

このことから、本発明の乗員拘束装置制御装置によれば、一般に電子部品の放熱対策として使用される放熱フィン等を省略することができることが分かる。   From this, it can be seen that, according to the occupant restraint device control apparatus of the present invention, it is possible to omit heat dissipating fins and the like that are generally used as heat dissipation measures for electronic components.

本発明における前記接続点２ａの位置は、図４（ａ）に示すように、前記切欠いた部分の両辺の切欠き始点ａ，ｂから接線方向に延長した直線Ｌ1，Ｌ2が交差する点ｃより電子回路基板２の中央部側であることが望ましい。このような位置の場合、切欠き部の形状に関わらず、接続点２ａを設けることができ、かつ、発熱量の大きい電子部品５ｂを接続点２ａの近くにより多く配置できる。   As shown in FIG. 4A, the position of the connection point 2a in the present invention is from a point c where straight lines L1 and L2 extending in the tangential direction from the notch starting points a and b on both sides of the notched portion intersect. It is desirable that the electronic circuit board 2 is on the center side. In such a position, the connection point 2a can be provided regardless of the shape of the notch, and more electronic components 5b having a large heat generation amount can be arranged near the connection point 2a.

本発明は上記の例に限らず、各請求項に記載された技術的思想の範疇に含まれるものであれば、適宜実施の形態を変更しても良い。   The present invention is not limited to the above examples, and the embodiments may be appropriately changed as long as they are included in the scope of the technical idea described in each claim.

すなわち、以上で述べた乗員拘束装置制御装置は、本発明の好ましい例であって、これ以外の実施態様も、各種の方法で実施または遂行できる。特に本願明細書中に限定する主旨の記載がない限り、本発明は添付図面に示した詳細な部品の形状、大きさ、および構成配置等に制約されるものではない。また、本願明細書で用いた表現および用語は、説明を目的としたもので、特に限定される主旨のない限り、それに限定されるものではない。   That is, the occupant restraint device control apparatus described above is a preferred example of the present invention, and other embodiments can be implemented or performed by various methods. In particular, the present invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless specifically limited.

例えば、上記の例では、全ての樹脂ケース１の取付け部１ａを、樹脂ケース１の内側に凹ませているが、グランド端子３と接続する取付け部１ａを樹脂ケース１の内側に凹ませれば、残りの取付け部１ａは必ずしも凹ませなくても良い。   For example, in the above example, the mounting portions 1 a of all the resin cases 1 are recessed inside the resin case 1, but if the mounting portions 1 a connected to the ground terminal 3 are recessed inside the resin case 1. The remaining mounting portion 1a does not necessarily have to be recessed.

また、樹脂ケース１の内側に凹ませる量は限定されるものではないが、下限値は少なくとも車両への取付け用ボルトの頭部が収まる広さである。一方、上限値は電子回路基板２に必要な制御回路が組み込める広さである。   Further, the amount to be recessed inside the resin case 1 is not limited, but the lower limit value is at least an area in which the head of the bolt for mounting to the vehicle can be accommodated. On the other hand, the upper limit value is a size in which a control circuit necessary for the electronic circuit board 2 can be incorporated.

また、上記の例では、樹脂ケース１の各辺から直交する直線方向に凹ませているが、内側に凹ませる方向は樹脂ケース１の各辺から直交する直線方向でなくても良い。   In the above example, the resin case 1 is recessed in a linear direction orthogonal to each side of the resin case 1, but the direction of indenting inward may not be a linear direction orthogonal to each side of the resin case 1.

以上の本発明は、エアバッグの展開を制御する装置に限らず、アースをとる必要がある機器を収容する樹脂ケースを備えた制御装置であれば、どのような制御装置にも有効である。   The present invention described above is not limited to a device that controls the deployment of an airbag, and is effective for any control device provided that it includes a resin case that houses equipment that needs to be grounded.

１ 樹脂ケース
１ａ 取付け部
２ 電子回路基板
２ａ 接続点
３ グランド端子
４ 裏蓋
５ｂ 発熱量の大きい電子部品DESCRIPTION OF SYMBOLS 1 Resin case 1a Mounting part 2 Electronic circuit board 2a Connection point 3 Ground terminal 4 Back cover 5b Electronic component with large calorific value

Claims (2)

車両の加速度又は減速度を検出するセンサーの検出出力に基づいて車両の衝突か否かを判定し、乗員拘束具を起動するための制御信号を出力する制御回路を組み込んだ電子回路基板と、
この電子回路基板を収容し、車両への取付け部を有する樹脂ケースと、
前記電子回路基板を収容した樹脂ケースの裏面開口部を覆う裏蓋と、
前記電子回路基板の外部へのアースを行うグランド端子と、
を有し、
前記グランド端子は、プレート形状を自立的に維持できる厚みを有する金属製のプレートで形成され、
前記樹脂ケースは、車両への取付け部である角部を内側に凹ませ、
前記電子回路基板は、前記樹脂ケースの角部の前記内側に凹ませた部分に沿って角部を切欠いた形状とし、
一端部を前記樹脂ケースの取付け部の一箇所に接続した前記グランド端子の他端部を、前記電子回路基板の切欠いた部分より中央部側の電子回路基板上に設けられた接続点に接続し、かつ、
この接続点から半径２５mm内の前記電子回路基板上に他の電子部品よりも発熱量の大きい電子部品が少なくとも一つ配置されていることを特徴とする乗員拘束装置制御装置。An electronic circuit board that incorporates a control circuit that determines whether or not a vehicle has collided based on a detection output of a sensor that detects acceleration or deceleration of the vehicle and outputs a control signal for activating an occupant restraint;
A resin case that houses this electronic circuit board and has a mounting portion to the vehicle,
A back cover covering the back opening of the resin case containing the electronic circuit board;
A ground terminal for grounding to the outside of the electronic circuit board;
Have
The ground terminal is formed of a metal plate having a thickness capable of independently maintaining the plate shape,
The resin case has an indented corner that is an attachment to the vehicle,
The electronic circuit board has a shape in which a corner portion is cut out along a portion recessed in the inside of the corner portion of the resin case,
The other end of the ground terminal having one end connected to one place of the mounting portion of the resin case is connected to a connection point provided on the electronic circuit board on the center side from the notched portion of the electronic circuit board. ,And,
An occupant restraint device control apparatus characterized in that at least one electronic component having a larger calorific value than other electronic components is disposed on the electronic circuit board within a radius of 25 mm from the connection point. 前記電子回路基板の接続点は、前記切欠いた部分の両辺の切欠き始点から接線方向に延長した直線が交差する点より電子回路基板の中央部側であることを特徴とする請求の範囲第１項に記載の乗員拘束装置制御装置。   The connection point of the electronic circuit board is on the center side of the electronic circuit board from a point where straight lines extending in a tangential direction from notch starting points on both sides of the notched part intersect. The occupant restraint device control device according to item.
JP2014600039U 2011-12-26 2012-11-19 Occupant restraint device control device Expired - Fee Related JP3193907U (en)

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WO2017119263A1 (en) * 2016-01-08 2017-07-13 株式会社デンソー Electronic control unit, and electric power steering device using same

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JP5236178B2 (en) * 2006-11-17 2013-07-17 株式会社デンソー Electronic circuit equipment
JP5425182B2 (en) * 2009-03-19 2014-02-26 オートリブ ディベロップメント エービー Occupant restraint device control device
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017119263A1 (en) * 2016-01-08 2017-07-13 株式会社デンソー Electronic control unit, and electric power steering device using same
JP2017123439A (en) * 2016-01-08 2017-07-13 株式会社デンソー Electronic control unit and electric power steering device using the same

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