JP4182834B2 - In-vehicle electronic control unit - Google Patents

In-vehicle electronic control unit Download PDF

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JP4182834B2
JP4182834B2 JP2003278540A JP2003278540A JP4182834B2 JP 4182834 B2 JP4182834 B2 JP 4182834B2 JP 2003278540 A JP2003278540 A JP 2003278540A JP 2003278540 A JP2003278540 A JP 2003278540A JP 4182834 B2 JP4182834 B2 JP 4182834B2
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insulating resin
conductive foil
vehicle
ecu
electronic control
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JP2005045069A (en
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宏直 林
康恭 竹内
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Toyota Motor Corp
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Description

本発明は、車両に搭載される車載用電子制御装置に関し、特に、設置場所の自由度が大きく小型・軽量化可能な車載用電子制御装置に関する。   The present invention relates to an on-vehicle electronic control device mounted on a vehicle, and more particularly to an on-vehicle electronic control device that has a large degree of freedom in installation location and can be reduced in size and weight.

従来から、車両の駆動や種々のコントロールを電子的に行うための車載用電子制御機器（以下「ＥＣＵ」と記す）が、車両に搭載されている。
このようなＥＣＵは、ＣＰＵやコンデンサ等の電子部品を実装したプリント基板を、箱型に形成されたアルミダイキャスト製等のカバーにて覆った箱状体に構成されており、鉄板等で構成される車体に設置されていた。 2. Description of the Related Art Conventionally, an on-vehicle electronic control device (hereinafter referred to as “ECU”) for electronically driving a vehicle and performing various controls is mounted on the vehicle.
Such an ECU is configured in a box-like body in which a printed circuit board on which electronic parts such as a CPU and a capacitor are mounted is covered with a cover made of aluminum die cast or the like formed in a box shape, and is configured by an iron plate or the like. Was installed in the car body.

前述の如く、カバーにて覆われたＥＣＵは大型で重いという難点を有していたため、アルミダイキャスト製のカバーに代えて、素子を実装した基板を、高分子層と金属層との複合体から形成した収納体にて覆い、ＥＣＵの軽量化・小型化を図る技術が考案されている。例えば、特許文献１に記載される技術である。   As described above, since the ECU covered with the cover has a drawback of being large and heavy, instead of the aluminum die-cast cover, the substrate on which the element is mounted is a composite of a polymer layer and a metal layer. A technology for reducing the weight and size of the ECU has been devised. For example, it is a technique described in Patent Document 1.

特開２００１−１５６４６８号公報JP 2001-156468 A

近年では、電子制御される車載機器が増加するのに伴ってＥＣＵの数も増大してきているため、ＥＣＵの車両への搭載スペースが不足しつつあり、ＥＣＵを車両の客室内における床面や天井面にも直接設置する必要性も生じつつある。
しかし、車両の床面や天井面は曲面に形成されていることが多いため、箱型のカバーで覆われているＥＣＵを床面や天井面に直接設置することはできず、ブラケットを介して設置しなければならないので、位置合わせに手間がかかり取り付け工数も多かった。
また、ＥＣＵは箱型のケースに覆われ、ブラケットを介して取り付けられており、床面や天井面等の設置面に密着させることができないので、ＥＣＵで発生した熱を床面や天井面を通じて車体へ放熱することは期待できず、ＥＣＵに別途放熱板を取り付ける必要があった。
前述の特許文献１に記載されているようなＥＣＵの場合も同様に、収納体にて覆った硬い板状のプリント基板にて構成されているので、曲面に形成される床面や天井面に直接設置することができなかった。 In recent years, as the number of in-vehicle devices that are electronically controlled has increased, the number of ECUs has also increased. Therefore, the space for mounting the ECU on the vehicle is becoming insufficient. The need to install directly on the surface is also emerging.
However, since the vehicle floor and ceiling are often curved, the ECU covered with a box-shaped cover cannot be installed directly on the floor or ceiling. Since it had to be installed, it took a lot of time to align the position and it took a lot of work.
Moreover, since the ECU is covered with a box-shaped case and attached via a bracket and cannot be brought into close contact with an installation surface such as a floor surface or a ceiling surface, heat generated by the ECU is transmitted through the floor surface or the ceiling surface. It was not expected to dissipate heat to the vehicle body, and it was necessary to attach a separate heat sink to the ECU.
Similarly, in the case of an ECU as described in the above-mentioned Patent Document 1, since it is configured by a hard plate-like printed circuit board covered with a storage body, it is formed on a floor surface or a ceiling surface formed on a curved surface. It could not be installed directly.

上記課題を解決する本発明の車載用電子制御装置は、以下の特徴を有する。
即ち、請求項１においては、電子部品や固定用ブッシュ等の各構成部材を、可撓性を有する絶縁性樹脂内に埋設し、該絶縁性樹脂の少なくとも一面に導電性箔を形成し、前記絶縁性樹脂の導電性箔形成面側が、前記固定用ブッシュを用い、電子部品から発生する熱を車体に放熱させるように、曲面形状とされた車両内面の車体に沿って密着固定して構成されている。
これにより、車載用電子制御装置から取り付け面への熱伝達を向上することができ、放熱板を設けることなく車載用電子制御装置の電子部品から発生する熱を効率良く放熱する
ことができ、重量の低減も図れる。
また、発熱量が多い車載用電子制御装置はノイズを発生し易いが、導電性箔はシールド材として作用するため、ノイズを大幅に低減することができる。
さらに、絶縁性樹脂の少なくとも一面を導電性箔で覆うことにより、絶縁性樹脂として表面に粘着性を有するシリコン樹脂等を用いた場合でも、導電性箔形成部分には塵や埃が付着することがない。また、手で触ったときの「べたべた感」がなくなるので、車載用電子制御装置の取り付け時等におけるハンドリング性を向上することができる。
また、可撓性を有する絶縁性樹脂は伸縮性を有しているので、車載用電子制御装置を取り付け面に取り付ける際に、車載用電子制御装置の固定用ブッシュの位置と、取り付け面のボルト穴の位置とが若干ずれていた場合でも、容易に取り付けることが可能である。 The on-vehicle electronic control device of the present invention that solves the above-described problems has the following characteristics.
That is, in the claim 1, the respective components such as electronic parts and the fixing bushing, and embedded in the insulating resin having flexibility, forming a conductive foil on at least one surface of the insulative resin, wherein configuration conductive foil forming surface of the insulating resin, with the fixed bush, so it dissipates heat generated from electronic components to the vehicle body, closely fixed to along the body having a curved surface and has been a vehicle interior surface Has been .
As a result, heat transfer from the in-vehicle electronic control device to the mounting surface can be improved, and heat generated from the electronic components of the in-vehicle electronic control device can be efficiently dissipated without providing a heat sink. Can also be reduced.
In addition, although the on-vehicle electronic control device that generates a large amount of heat is likely to generate noise, the conductive foil acts as a shielding material, so that noise can be greatly reduced.
Furthermore, by covering at least one surface of the insulating resin with a conductive foil, even when a silicon resin having adhesiveness on the surface is used as the insulating resin, dust or dirt adheres to the conductive foil forming portion. There is no. In addition, since there is no “sticky” feeling when touched with a hand, handling properties at the time of mounting an in-vehicle electronic control device can be improved.
In addition, since the insulating resin having flexibility has elasticity, when mounting the in-vehicle electronic control device on the mounting surface, the position of the fixing bush of the in-vehicle electronic control device and the bolt on the mounting surface Even if the position of the hole is slightly deviated, it can be easily attached.

また、請求項２においては、前記絶縁性樹脂表面の略全域を、導電性箔にて覆った。
これにより、絶縁性樹脂が外部に露出している部分がなくなるので、絶縁性樹脂として表面に粘着性を有するシリコン樹脂等を用いた場合でも、車載用電子制御装置外面への塵や埃の付着を防止することができるとともに、車載用電子制御装置の取り付け時等におけるハンドリング性をさらに向上することができる。
また、絶縁性樹脂内の電子部品から発生する熱の放熱面積が大きくなり、放熱効果を高めることができるとともに、防水性も確保できる。
さらに、絶縁性樹脂の周囲が略全てシールド材である導電性箔で覆われることとなるため、ノイズ低減の効果を向上させることができる。なお、必要に応じて、前記導電性箔の外側に二重、三重に又はそれ以上に重ねて導電性箔を形成して絶縁性樹脂の周囲を覆うことにより、一層のノイズ低減が図れる。 Moreover, in Claim 2, the substantially whole region of the said insulating resin surface was covered with the electroconductive foil.
As a result, there is no portion where the insulating resin is exposed to the outside, so even if silicon resin or the like having a sticky surface is used as the insulating resin, dust and dirt adhere to the outer surface of the on-vehicle electronic control device. Can be prevented, and handling at the time of mounting an on-vehicle electronic control device can be further improved.
Moreover, the heat radiation area of the heat generated from the electronic components in the insulating resin is increased, so that the heat radiation effect can be enhanced and the waterproof property can be secured.
Furthermore, since the insulating resin is almost entirely covered with the conductive foil, which is a shielding material, the noise reduction effect can be improved. In addition, if necessary, further noise reduction can be achieved by forming the conductive foil on the outside of the conductive foil so as to be doubled, tripled, or more and covering the periphery of the insulating resin.

また、請求項３においては、前記ブッシュには、半径方向外側へ突出するフランジ部が形成される。
これにより、固定用ブッシュと絶縁性樹脂との接触面積を増やして剥離を防止することができる。
また、絶縁性樹脂内の電子部品からの発熱の、固定用ブッシュから導電性箔への伝達性を向上させて、放熱効率を高めることができる。 According to a third aspect of the present invention, the bush includes a flange portion that protrudes outward in the radial direction.
Thereby, peeling can be prevented by increasing the contact area between the fixing bush and the insulating resin.
Further, the heat transfer efficiency of the heat generated from the electronic component in the insulating resin from the fixing bush to the conductive foil can be improved, and the heat dissipation efficiency can be increased.

また、請求項４においては、前記絶縁性樹脂は、シリコン樹脂である。
これにより、車載用電子制御装置を、ブラケット等を用いることなく、取り付け面に直接取り付けることができるので、取り付け時の位置合わせや工数を削減するとともに、車載用電子制御装置の設置スペースを減少することができる。
従って、曲面に形成される車両の床面や天井面への車載用電子制御装置の設置を、容易に行うことができる。 According to a fourth aspect of the present invention, the insulating resin is a silicon resin.
As a result, the in-vehicle electronic control device can be directly attached to the mounting surface without using a bracket or the like, so that the alignment and man-hours during installation are reduced, and the installation space for the in-vehicle electronic control device is reduced. be able to.
Therefore, it is possible to easily install the in-vehicle electronic control device on the floor surface or ceiling surface of the vehicle formed in a curved surface.

本発明によれば、車載用電子制御装置の電子部品から発生する熱を効率良く放熱することができ、重量の低減も図れる。
また、導電性箔のシールド効果によりノイズを大幅に低減することができる。
さらに、車載用電子制御装置の取り付け時等におけるハンドリング性を向上することができる。
また、車載用電子制御装置の取り付けが容易となる。
そして、固定用ブッシュと絶縁性樹脂との接触面積を増やして、固定用ブッシュの絶縁性樹脂からの剥離を防止することもできる。 ADVANTAGE OF THE INVENTION According to this invention, the heat which generate | occur | produces from the electronic component of a vehicle-mounted electronic control apparatus can be thermally radiated efficiently, and weight reduction can also be aimed at.
Further, noise can be greatly reduced by the shielding effect of the conductive foil.
Furthermore, the handling property at the time of mounting the on-vehicle electronic control device can be improved.
In addition, the on-vehicle electronic control device can be easily attached.
Then, the contact area between the fixing bush and the insulating resin can be increased to prevent the fixing bush from being detached from the insulating resin.

次に、本発明を実施するための最良の形態を、添付の図面を用いて説明する。
図１及び図２に示すように、ＥＣＵ１は、ＣＰＵやコンデンサ等の電子部品５・５・・
・や固定用ブッシュ６・６・・・等といった構成部品を、可撓性を有する絶縁性樹脂２内に埋設して構成されている。また、ＥＣＵ１を車載機器やバッテリ等と接続するためのコネクタ７を備えている。
各電子部品５・５・・・及びコネクタ７は、互いにリード線やフレキシブルコネクタ等の接続手段により電気的に接続されている。 Next, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1 and FIG. 2, the ECU 1 includes electronic components 5, 5,.
... And components such as the fixing bushes 6, 6... Are embedded in the insulating resin 2 having flexibility. Moreover, the connector 7 for connecting ECU1 with a vehicle equipment, a battery, etc. is provided.
The electronic components 5, 5... And the connector 7 are electrically connected to each other by connecting means such as lead wires and flexible connectors.

絶縁性樹脂２には、例えばシリコン樹脂が用いられており、該絶縁性樹脂２の外形は略直方体状に形成されている。
なお、本実施形態では、絶縁性樹脂２としてシリコン樹脂を用いているが、これに限るものではなく、可撓性を備えていて屈曲又は変形可能なものであれば、アクリル系樹脂、エポキシ樹脂、フッ素樹脂、及びＡＢＳ樹脂等、適宜任意の樹脂を用いることができる。
また、絶縁性樹脂２の、図１、図２における下面および側面には、導電性部材を箔状に形成したアルミニウム箔等の導電性箔３が形成されている。 For example, silicon resin is used as the insulating resin 2, and the outer shape of the insulating resin 2 is formed in a substantially rectangular parallelepiped shape.
In the present embodiment, a silicon resin is used as the insulating resin 2. However, the present invention is not limited to this, and an acrylic resin or an epoxy resin may be used as long as it has flexibility and can be bent or deformed. Any resin such as fluororesin and ABS resin can be used as appropriate.
In addition, conductive foil 3 such as an aluminum foil in which a conductive member is formed in a foil shape is formed on the lower surface and side surfaces of insulating resin 2 in FIGS. 1 and 2.

略直方体状に形成される絶縁性樹脂２の成形は、例えば以下のように行うことができる。
まず、図３に示すように、上面を開放した箱状体９の底面及び内側面に導電性箔３を敷き詰めた後に、該箱状体９内に、電子部品５・５・・・、固定用ブッシュ６・６・・・、及びコネクタ７といったＥＣＵ１の構成部品を載置する。
この場合、各電子部品５・５・・・、固定用ブッシュ６・６・・・、及びコネクタ７は、箱状体９内に載置する前または載置した後に、必要に応じて互いに電気的に接続する。 The insulating resin 2 formed in a substantially rectangular parallelepiped shape can be molded as follows, for example.
First, as shown in FIG. 3, after the conductive foil 3 is spread on the bottom surface and the inner side surface of the box-shaped body 9 whose upper surface is opened, the electronic components 5. .., And connectors 7 are mounted.
In this case, each of the electronic components 5, 5..., The fixing bushes 6, 6..., And the connector 7 are electrically connected to each other as necessary before or after being placed in the box-like body 9. Connect.

各構成部品を箱状体９内に載置した後は、図４に示すように、硬化前のペースト状の絶縁性樹脂２を、箱状体９内に充填する。本実施形態では、絶縁性樹脂２の充填をディスペンサ１１にて行っているが、他の方法により充填することを妨げるものではない。   After each component is placed in the box-shaped body 9, as shown in FIG. 4, the paste-like insulating resin 2 before curing is filled in the box-shaped body 9. In this embodiment, the filling of the insulating resin 2 is performed by the dispenser 11, but this does not prevent filling by other methods.

絶縁性樹脂２の箱状体９内への充填は、図５に示すように、電子部品５・５・・・、及び固定用ブッシュ６・６・・・等が必要充分に絶縁性樹脂２にて覆われるように行う。但し、固定用ブッシュ６・６・・・の上面と下面とには絶縁性樹脂２がかからないようにして、該固定用ブッシュ６・６・・・の貫通孔が塞がれないようにする。   As shown in FIG. 5, the filling of the insulating resin 2 into the box-like body 9 requires the electronic components 5 · 5... And the fixing bushes 6 • 6. To be covered with However, the insulating resin 2 is not applied to the upper and lower surfaces of the fixing bushes 6,... So that the through holes of the fixing bushes 6, 6.

絶縁性樹脂２の充填が終了した後は、該絶縁性樹脂２を硬化させる。例えば、絶縁性樹脂２が熱硬化型樹脂である場合は、箱状体９を所定時間加熱して絶縁性樹脂２を硬化させ、絶縁性樹脂２が２液性等の常温硬化型樹脂である場合は、硬化するまでの所定時間そのままの状態で放置しておく。   After the filling of the insulating resin 2 is completed, the insulating resin 2 is cured. For example, when the insulating resin 2 is a thermosetting resin, the box-shaped body 9 is heated for a predetermined time to cure the insulating resin 2, and the insulating resin 2 is a two-component or the like room temperature curable resin. In this case, it is left as it is for a predetermined time until it is cured.

絶縁性樹脂２が硬化した後は、図６に示すように、該絶縁性樹脂２を箱状体９から取り出す。この場合、導電性箔３は、絶縁性樹脂２の外面に付着しているので、絶縁性樹脂２と一体的に箱状体９から取り出される。
これにより、電子部品５・５・・・や固定用ブッシュ６・６・・・等といった構成部品を絶縁性樹脂２内に埋設し、コネクタ７を付設したＥＣＵ１が得られる。 After the insulating resin 2 is cured, the insulating resin 2 is taken out from the box 9 as shown in FIG. In this case, since the conductive foil 3 is attached to the outer surface of the insulating resin 2, the conductive foil 3 is taken out from the box-shaped body 9 integrally with the insulating resin 2.
Thereby, ECU1 which embed | buried components, such as electronic components 5 * 5 ..., the bushing 6 * 6 * for fixing, etc. in the insulating resin 2, and attached the connector 7 is obtained.

なお、本実施形態では、絶縁性樹脂２の成形時に箱状体９を型材として用いたが、箱状体９を用いることなく、絶縁性樹脂２を覆う導電性箔３自体を型材として用いることも可能である。
また、電子部品５・５・・・や固定用ブッシュ６・６・・・等を埋設する絶縁性樹脂２として、発泡樹脂を用いることも可能である。発泡樹脂を用いることで、通常のシリコン樹脂等を用いた場合に比べて、ＥＣＵ１の重量を低減することができる。 In this embodiment, the box-shaped body 9 is used as a mold material when the insulating resin 2 is molded. However, the conductive foil 3 itself covering the insulating resin 2 is used as a mold material without using the box-shaped body 9. Is also possible.
It is also possible to use a foamed resin as the insulating resin 2 for embedding the electronic components 5... And the fixing bushes 6, 6. By using the foamed resin, the weight of the ECU 1 can be reduced compared to the case of using a normal silicon resin or the like.

以上のように絶縁性樹脂２を成形することで構成されるＥＣＵ１は、可撓性を有する絶縁性樹脂２内に、電子部品５・５・・・や固定用ブッシュ６・６・・・等の構成部品を埋設しているので、電子部品５・５・・・等の構成部品に無理な負荷をかけることなく屈曲することができる。   The ECU 1 configured by molding the insulating resin 2 as described above includes an electronic component 5 · 5, a fixing bush 6 · 6, etc. in the insulating resin 2 having flexibility. Therefore, it is possible to bend without applying an excessive load to the components such as the electronic components 5, 5.

例えば、図７に示すように、ＥＣＵ１は、平面だけでなく、曲面形状の取り付け面１０にも、直接取り付けることができる。
ＥＣＵ１を取り付け面１０に取り付ける際には、絶縁性樹脂２に埋設した固定用ブッシュ６・６・・・にボルト９等の締結部材を貫通させ、ＥＣＵ１の導電性箔３が形成された面と取り付け面１０とが当接するように、締結部材を取り付け面１０に締め付ける。 For example, as shown in FIG. 7, the ECU 1 can be directly attached not only to a flat surface but also to a curved attachment surface 10.
When attaching the ECU 1 to the attachment surface 10, a fastening member such as a bolt 9 is passed through the fixing bushes 6, 6... Embedded in the insulating resin 2, and the surface on which the conductive foil 3 of the ECU 1 is formed. The fastening member is fastened to the mounting surface 10 so that the mounting surface 10 contacts.

すると、ＥＣＵ１の絶縁性樹脂２は可撓性を有しているので、取り付けられたＥＣＵ１は取り付け面１０の曲面形状に沿って屈曲し、ＥＣＵ１下面の導電性箔３が取り付け面１０に全体的に密着することとなる。   Then, since the insulating resin 2 of the ECU 1 has flexibility, the attached ECU 1 is bent along the curved surface shape of the mounting surface 10, and the conductive foil 3 on the lower surface of the ECU 1 is entirely attached to the mounting surface 10. Will be in close contact.

このように、ＥＣＵ１を取り付け面１０に沿って密着状態で取り付けることで、ＥＣＵ１から取り付け面１０への熱伝達を向上することができ、放熱板を設けることなくＥＣＵ１の電子部品５・５・・・から発生する熱を、効率良く取り付け面１０側へ放熱することができ（例えば図７における２点鎖線のように放熱される）、重量の低減も図れる。
また、発熱量が多いＥＣＵ１はノイズを発生し易いが、導電性箔３はシールド材として作用するため、ノイズを大幅に低減することができる。
さらに、絶縁性樹脂２の下面等を導電性箔３で覆うことにより、絶縁性樹脂２として表面に粘着性を有するシリコン樹脂等を用いた場合でも、導電性箔３形成部分には塵や埃が付着することがない。また、手で触ったときの「べたべた感」がなくなるので、ＥＣＵ１の取り付け時等におけるハンドリング性を向上することができる。 As described above, by attaching the ECU 1 along the attachment surface 10 in a close contact state, heat transfer from the ECU 1 to the attachment surface 10 can be improved, and the electronic components 5, 5,. The heat generated from the heat can be efficiently radiated to the mounting surface 10 side (for example, radiated as indicated by a two-dot chain line in FIG. 7), and the weight can be reduced.
Moreover, although ECU1 with much calorific value tends to generate | occur | produce a noise, since the electroconductive foil 3 acts as a shielding material, noise can be reduced significantly.
Further, by covering the lower surface and the like of the insulating resin 2 with the conductive foil 3, even when a silicon resin having adhesiveness on the surface is used as the insulating resin 2, dust or dirt is formed on the conductive foil 3 forming portion. Will not adhere. In addition, since there is no “sticky” feeling when touched with a hand, handling properties when the ECU 1 is attached can be improved.

また、ＥＣＵ１は、ブラケット等を用いることなく、取り付け面１０に直接取り付けることができるので、取り付け時の位置合わせや工数を削減するとともに、ＥＣＵ１の設置スペースを減少することができる。
従って、ＥＣＵ１を車両に設置する場合でも、曲面に形成される床面や天井面への設置を容易に行うことが可能となる。 Further, since the ECU 1 can be directly attached to the attachment surface 10 without using a bracket or the like, it is possible to reduce the alignment and man-hours at the time of attachment and to reduce the installation space of the ECU 1.
Therefore, even when the ECU 1 is installed in a vehicle, it can be easily installed on a floor surface or a ceiling surface formed in a curved surface.

なお、各電子部品５・５・・・及びコネクタ７は、リード線やフレキシブルコネクタ等の接続手段により電気的に接続されているが、ＥＣＵ１の屈曲等に影響を与えない程度の狭い範囲でなら、板状のプリント基板により各電子部品５・５・・・及びコネクタ７を接続することも可能である。   Each of the electronic components 5, 5... And the connector 7 are electrically connected by connecting means such as a lead wire or a flexible connector, but only within a narrow range that does not affect the bending of the ECU 1. It is also possible to connect the electronic components 5, 5... And the connector 7 with a plate-like printed board.

また、可撓性を有する絶縁性樹脂２は伸縮性を有しているので、ＥＣＵ１を取り付け面に取り付ける際に、ＥＣＵ１の固定用ブッシュ６・６・・・の位置と、取り付け面のボルト穴の位置とが若干ずれていた場合でも、容易に取り付けることが可能である。
なお、ＥＣＵ１を取り付ける際の締結部材にセルフタップスクリューを用いると、取り付け面に締結穴を形成することなくＥＣＵ１を設置することができるため、ＥＣＵ１の設置位置を自由に設定することができる。 Further, since the insulating resin 2 having flexibility has elasticity, when the ECU 1 is attached to the attachment surface, the position of the fixing bushes 6, 6. Even if the position is slightly deviated, it can be easily attached.
If a self-tapping screw is used as a fastening member when attaching the ECU 1, the ECU 1 can be installed without forming a fastening hole on the attachment surface, and therefore the installation position of the ECU 1 can be set freely.

また、ＥＣＵ１は、締結部材を用いることなく設置することもできる。
例えば、図８に示すように、車両の運転席部における床面２１にＥＣＵ１を設置することができる。この場合、ＥＣＵ１を、締結部材で締結することなしに床面２１に載置し、上からフロアマット２２を覆い被せることで設置する。
通常、アルミカバーにて覆われているＥＣＵであれば、床面２１に載置しただけでは、載置位置が移動したり、「カタカタ」といった音が発生したりする不具合がある。
しかし、本発明のＥＣＵ１であれば、可撓性を有する柔軟な絶縁性樹脂２にて本体部分が構成されているので音が発生することがない。また、絶縁性樹脂２としてシリコン樹脂を用いた場合には、樹脂表面に粘着性があるため、フロアマット２２の裏面に絶縁性樹脂２上面が付着して位置ずれを防止することができる。
なお、絶縁性樹脂２の上面だけでは付着力が不足する場合は、導電性箔３にパンチング孔を形成する等して、導電性箔３に覆われた部分の一部から絶縁性樹脂２表面を露出させ床面２１に付着させて、粘着力を増すこともできる。 Moreover, ECU1 can also be installed without using a fastening member.
For example, as shown in FIG. 8, ECU1 can be installed in the floor surface 21 in the driver's seat part of a vehicle. In this case, the ECU 1 is placed by being placed on the floor surface 21 without being fastened by a fastening member and covering the floor mat 22 from above.
Normally, if the ECU is covered with an aluminum cover, simply placing it on the floor surface 21 causes a problem that the placement position moves or a sound such as “katakata” is generated.
However, with the ECU 1 of the present invention, no sound is generated because the main body portion is composed of the flexible insulating resin 2 having flexibility. Further, when a silicon resin is used as the insulating resin 2, since the resin surface is sticky, the upper surface of the insulating resin 2 adheres to the back surface of the floor mat 22, and displacement can be prevented.
In addition, when the adhesive force is insufficient with only the upper surface of the insulating resin 2, the surface of the insulating resin 2 is formed from a part of the portion covered with the conductive foil 3, such as by forming a punching hole in the conductive foil 3. Can be exposed and adhered to the floor surface 21 to increase the adhesive force.

また、図９に示すように、本発明のＥＣＵ１においては、導電性箔３を絶縁性樹脂２の下面及び側面だけでなく上面にも形成して、絶縁性樹脂２の略全面を導電性箔３にて覆うこともできる。
このように全面を導電性箔３で覆うことにより、絶縁性樹脂２が外部に露出している部分がなくなるので、絶縁性樹脂２として表面に粘着性を有するシリコン樹脂等を用いた場合でも、ＥＣＵ１外面への塵や埃の付着を防止することができるとともに、ＥＣＵ１の取り付け時等におけるハンドリング性をさらに向上することができる。
また、絶縁性樹脂２内の電子部品５・５・・・から発生する熱の放熱面積が大きくなり、放熱効果を高めることができるとともに、防水性も確保できる。
さらに、絶縁性樹脂２の周囲が略全てシールド材である導電性箔３で覆われることとなるため、ノイズ低減の効果を向上させることができる。なお、必要に応じて、前記導電性箔３の外側に二重、三重に又はそれ以上に重ねて導電性箔３を形成して絶縁性樹脂２の周囲を覆うことにより、一層のノイズ低減が図れる。 Further, as shown in FIG. 9, in the ECU 1 of the present invention, the conductive foil 3 is formed not only on the lower surface and the side surface of the insulating resin 2 but also on the upper surface, so that the substantially entire surface of the insulating resin 2 is covered with the conductive foil. 3 can also be covered.
By covering the entire surface with the conductive foil 3 in this way, there is no portion where the insulating resin 2 is exposed to the outside, so even when a silicon resin having adhesiveness on the surface is used as the insulating resin 2, It is possible to prevent dust and dust from adhering to the outer surface of the ECU 1 and to further improve handling when the ECU 1 is attached.
Moreover, the heat radiation area of the heat generated from the electronic components 5, 5... In the insulating resin 2 is increased, so that the heat radiation effect can be enhanced and waterproofing can be ensured.
Furthermore, since the entire periphery of the insulating resin 2 is covered with the conductive foil 3 that is a shield material, the noise reduction effect can be improved. In addition, if necessary, the noise can be further reduced by forming the conductive foil 3 on the outside of the conductive foil 3 so as to be doubled, tripled or stacked on the outside and covering the periphery of the insulating resin 2. I can plan.

また、絶縁性樹脂２に埋設される固定用ブッシュ６・６・・・は、その両端面（図１における上下面）が絶縁性樹脂２に覆われていなくて露出しているため（絶縁性樹脂２と固定用ブッシュ６・６・・・との界面が外部に露出しているため）、ＥＣＵ１を屈曲した際等に、固定用ブッシュ６・６・・・が絶縁性樹脂２から剥離することを防止するため、該固定用ブッシュ６・６・・・に次のような形状に形成することができる。   In addition, the fixing bushes 6, 6... Embedded in the insulating resin 2 are exposed without being covered with the insulating resin 2 (upper and lower surfaces in FIG. 1) (insulating properties). Because the interface between the resin 2 and the fixing bushes 6, 6 ... is exposed to the outside), the fixing bushes 6, 6 ... are peeled off from the insulating resin 2 when the ECU 1 is bent. In order to prevent this, the fixing bushes 6, 6... Can be formed in the following shapes.

つまり、図１０に示すように、固定用ブッシュ６外周面から、半径方向外側へ全周にわたって突出するフランジ部６ａを形成し、固定用ブッシュ６と絶縁性樹脂２との接触面積を増やして剥離を防止することができる。
なお、図１０では固定用ブッシュ６の下端部（導電性箔３形成側端部）にフランジ部６ａを形成している。
このように、導電性箔３形成側端部にフランジ部６ａを形成することで、固定用ブッシュ６と導電性箔３との接触面積を増加させることができるため、絶縁性樹脂２からの剥離防止の効果に加えて、絶縁性樹脂２内の電子部品５・５・・・からの発熱の、固定用ブッシュ６から導電性箔３への伝達性を向上させて、放熱効率を高めることができる。 That is, as shown in FIG. 10, a flange portion 6 a that protrudes from the outer peripheral surface of the fixing bush 6 to the radially outer side over the entire circumference is formed, and the contact area between the fixing bush 6 and the insulating resin 2 is increased and peeled off. Can be prevented.
In addition, in FIG. 10, the flange part 6a is formed in the lower end part (conductive foil 3 formation side edge part) of the bushing 6 for fixation.
Thus, since the contact area of the fixing bush 6 and the conductive foil 3 can be increased by forming the flange portion 6a at the end portion on the conductive foil 3 forming side, the peeling from the insulating resin 2 is possible. In addition to the effect of prevention, it is possible to improve the heat transfer efficiency of the heat generation from the electronic components 5, 5... it can.

また、図１１に示すように、固定用ブッシュ６におけるフランジ部６ａの外側縁部から軸心方向へ延設される延設部６ｂを形成して、固定用ブッシュ６と絶縁性樹脂２との接触面積をさらに増加させることで、剥離防止の効果を向上することができる。   Further, as shown in FIG. 11, an extending portion 6 b extending in the axial direction from the outer edge of the flange portion 6 a in the fixing bush 6 is formed, and the fixing bush 6 and the insulating resin 2 are formed. By further increasing the contact area, the effect of preventing peeling can be improved.

また、図１２に示すように、フランジ部６ａを、固定用ブッシュ６の上端部、下端部、及び上端と下端の間の中間部に、それぞれ形成することもできる。
このように、フランジ部６ａを複数形成することで、絶縁性樹脂２との接触面積を増加させて、剥離防止の効果を向上することができる。
なお、フランジ部６ａを形成する箇所は、図１２に示す上端部、下端部、及び中間部に限るものではなく、任意の箇所に任意の数のフランジ部６ａを適宜形成することができる。 Moreover, as shown in FIG. 12, the flange part 6a can also be formed in the upper end part of the bush 6 for fixation, a lower end part, and the intermediate part between an upper end and a lower end, respectively.
Thus, by forming a plurality of flange portions 6a, the contact area with the insulating resin 2 can be increased, and the effect of preventing peeling can be improved.
In addition, the location which forms the flange part 6a is not restricted to the upper end part shown in FIG. 12, a lower end part, and an intermediate part, Arbitrary numbers of the flange parts 6a can be suitably formed in arbitrary places.

さらに、図１３に示すように、フランジ部６ａの表面に、ひだ形状等の凹凸を形成することで絶縁性樹脂２との接触面積を増加させ、さらに剥離防止の効果を向上することもできる。   Furthermore, as shown in FIG. 13, by forming irregularities such as pleats on the surface of the flange portion 6a, the contact area with the insulating resin 2 can be increased, and the effect of preventing peeling can be improved.

また、図１４に示すように、絶縁性樹脂２の上下面に導電性箔３を形成した場合は、固定用ブッシュ６の上端部と下端部とにフランジ部６ａを形成して、各フランジ部６ａを、それぞれ上面側の導電性箔３及び下面側の導電性箔３と接触させるように構成することができる。
これにより、固定用ブッシュ６と導電性箔３との接触面積を大幅に増加させることができるため、絶縁性樹脂２からの剥離防止の効果に加えて、絶縁性樹脂２内の電子部品５・５・・・からの発熱の、固定用ブッシュ６から導電性箔３への伝達性を向上させて、放熱効率を高めることができる。 As shown in FIG. 14, when the conductive foil 3 is formed on the upper and lower surfaces of the insulating resin 2, flange portions 6 a are formed at the upper end portion and the lower end portion of the fixing bush 6, and each flange portion is formed. 6a can be configured to contact the conductive foil 3 on the upper surface side and the conductive foil 3 on the lower surface side, respectively.
As a result, the contact area between the fixing bush 6 and the conductive foil 3 can be greatly increased, so that in addition to the effect of preventing the peeling from the insulating resin 2, the electronic parts 5 in the insulating resin 2 5 can improve the heat transfer efficiency of the heat generation from the fixing bush 6 to the conductive foil 3 to increase the heat radiation efficiency.

また、図１５に示すように、フランジ部６ａにおける導電性箔３との接触面に、くさび形状の突起６ｃを形成することもできる。
このように形成した突起６ｃは、ＥＣＵ１をボルト等で取り付け面に取り付けた際に、導電性箔３に食い込むため、確実に固定用ブッシュ６と導電性箔３とが接触することとなり、固定用ブッシュ６と導電性箔３との間の熱伝導性が向上する。
これにより、電子部品５・５・・・からの発熱が、固定用ブッシュ６を通じて導電性箔３側へ逃げ易くなり、放熱効率を高めることができる。 As shown in FIG. 15, a wedge-shaped protrusion 6c can be formed on the contact surface of the flange portion 6a with the conductive foil 3.
Since the protrusion 6c formed in this way bites into the conductive foil 3 when the ECU 1 is attached to the mounting surface with a bolt or the like, the fixing bush 6 and the conductive foil 3 are surely in contact with each other, The thermal conductivity between the bush 6 and the conductive foil 3 is improved.
As a result, the heat generated from the electronic components 5, 5... Easily escapes to the conductive foil 3 side through the fixing bush 6, and the heat dissipation efficiency can be increased.

本発明にかかる車載用電子制御装置を示す側面断面図である。It is side surface sectional drawing which shows the vehicle-mounted electronic control apparatus concerning this invention. 車載用電子制御装置を示す平面図である。It is a top view which shows a vehicle-mounted electronic control apparatus. 絶縁性樹脂の成形過程を示す図であって、導電性箔を敷き詰めた箱状体内にＥＣＵの構成部品を載置した状態を示す斜視図である。It is a figure which shows the shaping | molding process of insulating resin, Comprising: It is a perspective view which shows the state which mounted the component of ECU in the box-shaped body which spread the conductive foil. 絶縁性樹脂の成形過程を示す図であって、箱状体内に絶縁性樹脂を充填している状態を示す斜視図である。It is a figure which shows the shaping | molding process of insulating resin, Comprising: It is a perspective view which shows the state with which insulating resin is filled in the box-shaped body. 絶縁性樹脂の成形過程を示す図であって、箱状体内への絶縁性樹脂の充填が完了した状態を示す斜視図である。It is a figure which shows the shaping | molding process of insulating resin, Comprising: It is a perspective view which shows the state which filling of the insulating resin to a box-shaped body was completed. 絶縁性樹脂の成形過程を示す図であって、硬化した絶縁性樹脂を導電性箔とともに箱状体から取り出した状態を示す斜視図である。It is a figure which shows the shaping | molding process of insulating resin, Comprising: It is a perspective view which shows the state which took out the hardened insulating resin from the box-shaped body with electroconductive foil. ＥＣＵを曲面形状の取り付け面に取り付けた状態を示す側面断面図である。It is side surface sectional drawing which shows the state which attached ECU to the curved attachment surface. 締結部材を用いることなく車両の運転席部における床面に設置したＥＣＵを示す側面断面図である。It is side surface sectional drawing which shows ECU installed in the floor surface in the driver's seat part of a vehicle, without using a fastening member. 絶縁性樹脂の略全面を導電性箔にて覆ったＥＣＵを示す側面断面図である。It is side surface sectional drawing which shows ECU which covered the substantially whole surface of insulating resin with the electroconductive foil. フランジ部を形成した固定用ブッシュの第一の例を示す側面断面図である。It is side surface sectional drawing which shows the 1st example of the bush for fixation which formed the flange part. フランジ部を形成した固定用ブッシュの第二の例を示す側面断面図である。It is side surface sectional drawing which shows the 2nd example of the bush for fixation which formed the flange part. フランジ部を形成した固定用ブッシュの第三の例を示す側面断面図である。It is side surface sectional drawing which shows the 3rd example of the bush for fixation which formed the flange part. フランジ部を形成した固定用ブッシュの第四の例を示す側面断面図である。It is side surface sectional drawing which shows the 4th example of the bush for fixation which formed the flange part. フランジ部を形成した固定用ブッシュの第五の例を示す側面断面図である。It is side surface sectional drawing which shows the 5th example of the bush for fixation which formed the flange part. フランジ部を形成した固定用ブッシュの第六の例を示す側面断面図である。It is side surface sectional drawing which shows the 6th example of the bush for fixation which formed the flange part.

符号の説明Explanation of symbols

１ 車載用電子制御装置（ＥＣＵ）
２ 絶縁性樹脂
３ 導電性箔
５ 電子部品
６ 固定用ブッシュ
７ コネクタ 1 In-vehicle electronic control unit (ECU)
2 Insulating resin 3 Conductive foil 5 Electronic component 6 Bushing for fixing 7 Connector

Claims (4)

電子部品や固定用ブッシュ等の各構成部材を、可撓性を有する絶縁性樹脂内に埋設し、該絶縁性樹脂の少なくとも一面に導電性箔を形成し、
前記絶縁性樹脂の導電性箔形成面側が、前記固定用ブッシュを用い、電子部品から発生する熱を車体に放熱させるように、曲面形状とされた車両内面の車体に沿って密着固定して構成されている、
ことを特徴とする車載用電子制御装置。 Each component such as an electronic component or a fixing bush is embedded in a flexible insulating resin, and a conductive foil is formed on at least one surface of the insulating resin .
The conductive foil forming surface of the insulating resin, with the fixed bush, so dissipates heat generated from electronic components to the vehicle body, closely fixed to along the body having a curved surface and has been a vehicle interior surface It is configured,
An on-vehicle electronic control device. 前記絶縁性樹脂表面の略全域を、導電性箔にて覆ったことを特徴とする請求項１に記載の車載用電子制御装置。   The vehicle-mounted electronic control device according to claim 1, wherein substantially the entire surface of the insulating resin surface is covered with a conductive foil. 前記ブッシュには、半径方向外側へ突出するフランジ部が形成されることを特徴とする請求項１又は請求項２に記載の車載用電子制御装置。   The in-vehicle electronic control device according to claim 1, wherein a flange portion that protrudes radially outward is formed on the bush. 前記絶縁性樹脂は、シリコン樹脂であることを特徴とする請求項１〜請求項３に記載の車載用電子制御装置。   The in-vehicle electronic control device according to claim 1, wherein the insulating resin is a silicon resin.
JP2003278540A 2003-07-23 2003-07-23 In-vehicle electronic control unit Expired - Fee Related JP4182834B2 (en)

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JP5892087B2 (en) * 2013-03-01 2016-03-23 株式会社デンソー Electronic control unit for vehicle and manufacturing method thereof
JP5892088B2 (en) * 2013-03-01 2016-03-23 株式会社デンソー Electronic control unit for vehicle
JP2014168982A (en) * 2013-03-01 2014-09-18 Denso Corp Vehicular electronic control unit

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