JPH11355931A - Coupling structure between automotive electronic control unit housing box and air-cooling duct - Google Patents
Coupling structure between automotive electronic control unit housing box and air-cooling ductInfo
- Publication number
- JPH11355931A JPH11355931A JP10158251A JP15825198A JPH11355931A JP H11355931 A JPH11355931 A JP H11355931A JP 10158251 A JP10158251 A JP 10158251A JP 15825198 A JP15825198 A JP 15825198A JP H11355931 A JPH11355931 A JP H11355931A
- Authority
- JP
- Japan
- Prior art keywords
- duct
- box
- control unit
- electronic control
- ventilation
- 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
Links
Landscapes
- Details Of Indoor Wiring (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車用電子制御
ユニット収容箱と空冷用ダクトとの結合構造に関し、詳
しくは、電子式燃料噴射装置等のための電子制御ユニッ
トを自動車のエンジンルーム内に配置するものにおい
て、電子制御ユニットを収容する内箱と、冷却空気循環
用の空間をあけて内箱を収容する外箱を備え、該外箱に
設けた通気穴を空冷用の通気ダクトと接続し、上記空間
に冷却空気を強制循環させるものにおいて、上記通気ダ
クトを外箱の通気穴に容易に結合できるようにするもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting an electronic control unit housing box for an automobile and an air cooling duct, and more particularly, to an electronic control unit for an electronic fuel injection device or the like in an engine room of the automobile. In the arrangement, an inner box accommodating the electronic control unit and an outer box accommodating the inner box with a space for cooling air circulation are provided, and a ventilation hole provided in the outer box is connected to a ventilation duct for air cooling. Further, in the cooling air forcibly circulating in the space, the ventilation duct can be easily coupled to the ventilation hole of the outer box.
【０００２】[0002]
【従来の技術】従来より、自動車は、エンジンの電子式
燃料噴射装置(ＥＦＩ)等のための電子制御ユニット(Ｅ
ＣＵ)を備えている。従来、浸水および過熱の問題より
電子制御ユニットは自動車の車室内に配置されている
が、エンジン制御用の電子制御ユニットを室内側に配置
すると、ワイヤハーネスを取りまわす必要があり、ワイ
ヤハーネスが長くなると共に、車室とエンジンルームを
仕切る車体パネルに穴をあけてワイヤハーネスを挿通す
る必要があるため、作業も煩わしくコスト高となる原因
となっていた。2. Description of the Related Art Conventionally, a motor vehicle has an electronic control unit (EFI) for an electronic fuel injection device (EFI) of an engine or the like.
CU). Conventionally, the electronic control unit has been placed in the cabin of an automobile due to the problem of flooding and overheating. At the same time, it is necessary to make a hole in the vehicle body panel that separates the vehicle compartment and the engine room, and to insert the wire harness, so that the work is cumbersome and causes an increase in cost.
【０００３】上記した問題に対して、本出願人は先に特
開平９−１６３５４８号において、図８、図９および図
１０に示すように、電子制御ユニットを収容箱に収容し
て、エンジンルーム内に配置するものを提供している。
収容箱１は電子制御ユニット２を収容する内箱３と、内
箱３に冷却空気循環用の空間４をあけて外箱５を外嵌す
ると共にアッパーカバー６を被せ、過熱を防止すると共
に浸水を防止する構成としている。In order to solve the above-mentioned problem, the present applicant disclosed in Japanese Patent Application Laid-Open No. Hei 9-163548 that an electronic control unit was housed in a housing box as shown in FIGS. Offering something to place inside.
The housing box 1 has an inner box 3 for housing the electronic control unit 2, a space 4 for cooling air circulation in the inner box 3, the outer box 5 is fitted over the outer box 5, and the upper cover 6 is covered to prevent overheating and flooding. Is prevented.
【０００４】上記過熱防止を図るために、外箱５に吸気
穴５ａを設けると共に、内箱３と一体に設けた上部外箱
部３ａに排気穴３ｂを設け、図１０に示すように、吸気
穴５ａに吸気ダクト７の一端を接続し、該吸気ダクト７
の他端を自動車の車外側に開口として大気を吸引するよ
うにしている。また、排気穴３ｂに排気ダクト８の一端
を接続し、該排気ダクト８の他端をラジエータ用電動フ
ァン９の背面ダクトと接続し、収容箱１内の冷却空気循
環用の空間４に冷却空気を強制循環させるようにしてい
る。In order to prevent the above-mentioned overheating, an intake hole 5a is provided in the outer case 5 and an exhaust hole 3b is provided in an upper outer case portion 3a provided integrally with the inner case 3, so that the intake case is formed as shown in FIG. One end of the intake duct 7 is connected to the hole 5a.
The other end is opened to the outside of the vehicle to suck the atmosphere. One end of the exhaust duct 8 is connected to the exhaust hole 3b, and the other end of the exhaust duct 8 is connected to the rear duct of the radiator electric fan 9, so that the cooling air circulating space 4 in the housing box 1 is cooled. Is forced to circulate.
【０００５】[0005]
【発明が解決しようとする課題】上記通気用の吸気ダク
ト７および排気ダクト８は、自動車メーカにおける組立
工程で収容箱１と連結されることとなる。該組立工程に
おいて、排気ダクト８の他端は電動ファン９に結合され
た状態であり、かつ、収容箱１はエンジンルーム内の所
定位置に搭載した状態であるため、他端が固定されると
共に屈曲した排気ダクト８の先端を、固定された収容箱
１の排気穴に結合する必要があり、しかも、作業スペー
スが狭いため、容易に結合できない問題がある。The intake duct 7 and the exhaust duct 8 for ventilation are connected to the housing box 1 in an assembling process in an automobile manufacturer. In the assembling process, the other end of the exhaust duct 8 is connected to the electric fan 9 and the housing box 1 is mounted at a predetermined position in the engine room. It is necessary to couple the bent end of the exhaust duct 8 to the fixed exhaust hole of the storage box 1, and the work space is narrow, so that there is a problem that it cannot be easily coupled.
【０００６】特に、上記排気ダクト８と排気穴３ｂと
は、排気穴３ｂの内周縁より突設した嵌合筒３ｃに排気
ダクト８の先端を密嵌して空気漏れしない状態で結合す
る構成となっている。即ち、排気ダクトと排気穴との中
心を精度よく一致させて嵌合する必要があるが、上記の
ように、作業性が悪いために容易にセンタリングできな
い。しかしながら、正確に嵌合しないと空気漏れが発生
し、空気が循環されず、電子制御ユニットを冷却できな
い致命的な欠点が生じる。Particularly, the exhaust duct 8 and the exhaust hole 3b are connected to each other in a state where the tip of the exhaust duct 8 is closely fitted to a fitting cylinder 3c protruding from the inner peripheral edge of the exhaust hole 3b so that no air leaks. Has become. That is, it is necessary to fit the exhaust duct and the exhaust hole so that the centers thereof are accurately matched with each other. However, as described above, the workability is poor and the centering cannot be easily performed. However, if not fitted correctly, air leaks occur, air is not circulated, and there is a fatal disadvantage that the electronic control unit cannot be cooled.
【０００７】本発明は上記した問題に鑑みてなされたも
ので、通気ダクト、特に、電動ファンに他端が固定され
た排気ダクトを、所定位置に搭載された収容箱の排気口
に容易かつ確実に結合できるようにすることを課題とし
ている。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problem, and a ventilating duct, particularly an exhaust duct having the other end fixed to an electric fan, is easily and reliably inserted into an exhaust port of a housing box mounted at a predetermined position. The goal is to be able to combine with
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するた
め、本発明は、電子制御ユニットを収容する内箱と、冷
却空気循環用の空間をあけて上記内箱を収容する外箱を
備え、該外箱に設けた通気穴を空冷用の通気ダクトと接
続し、上記空間に冷却空気を強制循環させる自動車用電
子制御ユニット収容箱と空冷用ダクトの結合構造であっ
て、上記外箱の通気穴の周縁より通気ダクトとの結合筒
を突設し、該結合筒を、通気穴の内周縁の一部より突設
した嵌合部と、内周縁の残部より所要寸法をあけた外周
より突設したガイド部とより構成し、該ガイド部の内周
面に突出端より通気穴の内周縁へと傾斜させたテーパ部
を設けると共に、上記嵌合部の先端部に位置決め用の凹
部を形成し、かつ、上記通気ダクトの結合側の開口端周
縁よりに周方向に間隔をあけて、弾性爪を先端に設けた
突出片を設けると共に、開口端より所要寸法をあけた外
周部に上記凹部と嵌合する凸部と、上記ガイド部の外径
よりも大径とした閉鎖用突起部を設け、上記通気ダクト
の突出片を上記ガイド部のテーパ部によりガイドして上
記結合筒に挿入して弾性爪を通気穴の外箱内面に係止し
て結合する構成としている自動車用電子制御ユニット収
容箱の空冷用ダクトの結合構造を提供している。In order to solve the above problems, the present invention comprises an inner box for housing an electronic control unit, and an outer box for housing the inner box with a space for cooling air circulation. A ventilating hole provided in the outer box is connected to a ventilating duct for air cooling, and the electronic control unit housing box for a vehicle for forcibly circulating cooling air in the space and a duct for air cooling are provided. A connecting cylinder with the ventilation duct protrudes from the periphery of the hole, and the connecting cylinder protrudes from a fitting portion protruding from a part of the inner periphery of the ventilation hole and an outer periphery having a required dimension from the remaining inner periphery. And a tapered portion inclined from the protruding end to the inner peripheral edge of the vent hole on the inner peripheral surface of the guide portion, and a positioning concave portion is formed at the distal end of the fitting portion. And a gap between the air duct and the peripheral edge of the opening end on the connecting side in the circumferential direction. In addition, a projecting piece provided with an elastic claw at the tip thereof is provided, and a convex portion that fits with the concave portion at an outer peripheral portion having a required dimension from the opening end, and a diameter larger than the outer diameter of the guide portion. A closing projection is provided, and the projecting piece of the ventilation duct is guided by the tapered portion of the guide portion, inserted into the coupling cylinder, and the elastic claw is engaged with the inner surface of the outer box of the ventilation hole and coupled. Provided is a coupling structure of an air cooling duct of an electronic control unit housing box for a vehicle.
【０００９】上記結合筒を設けた上記通気穴は排気穴か
らなり、結合筒に一端を接続した排気ダクトからなる上
記通気ダクトの他端をラジエータ用電動ファンの背面ダ
クトと接続している。なお、吸気ダクトと収容箱の吸気
口の結合構造にも採用してもよいことは言うまでもな
い。The vent hole provided with the connecting cylinder is formed of an exhaust hole, and the other end of the vent duct formed of an exhaust duct having one end connected to the connecting cylinder is connected to the rear duct of the radiator electric fan. Needless to say, the present invention may also be applied to a structure in which the intake duct and the intake port of the storage box are combined.
【００１０】上記結合構造によれば、通気ダクトと通気
穴との中心を正確に一致しなくても、通気ダクトを結合
筒に合わせさえすれば、該結合筒のガイド部の内周面に
設けたテーパ部に沿って通気ダクトが挿入され、自動的
に通気ダクトと通気穴のセンタリングが行われる。ま
た、この結合筒への通気ダクトの挿入時に、通気ダクト
の開口端より突出した突出片を結合筒に挿入すればよい
ため、通気ダクトの結合筒への挿入がより容易となる。
よって、狭い作業スペースで、かつ、他端が固定された
通気ダクトを所定位置に固定されている収容箱の通気穴
に正確かつ容易に結合することができる。According to the above coupling structure, even if the center of the ventilation duct does not exactly coincide with the center of the ventilation hole, the ventilation duct is provided on the inner peripheral surface of the guide portion of the coupling cylinder as long as the ventilation duct is aligned with the coupling cylinder. The ventilation duct is inserted along the tapered portion, and the ventilation duct and the ventilation hole are automatically centered. In addition, when the ventilation duct is inserted into the connecting cylinder, the protruding piece projecting from the opening end of the ventilation duct may be inserted into the connecting cylinder, so that the ventilation duct can be more easily inserted into the connecting cylinder.
Therefore, it is possible to accurately and easily connect the ventilation duct having the other end fixed to the ventilation hole of the storage box fixed at a predetermined position in a narrow work space.
【００１１】また、上記通気ダクトの挿入を容易とする
ために外周側に設けたガイド部の先端開口を通気ダクト
側の閉鎖用突起部で閉鎖するため、該ガイド部からの空
気漏れを防止できる。さらに、位置合わせ用の凹部と凸
部とを設けているため、排気ダクトを所定位置に回り止
めした状態で保持できる。さらにまた、通気ダクトの開
口端より突出した突出片の先端側に設けた弾性爪が、通
気ダクトを結合筒に結合した状態で、外箱内面側の通気
穴の周縁に係止するため、通気ダクトを収容箱の外箱に
確実に固定することができる。即ち、通気ダクトを結合
穴に挿入するだけの作業で通気ダクトの収容箱への固定
作業も同時に行える。In addition, since the opening at the distal end of the guide portion provided on the outer peripheral side for facilitating insertion of the ventilation duct is closed by the closing projection on the ventilation duct side, air leakage from the guide portion can be prevented. . Further, since the concave portion and the convex portion for positioning are provided, the exhaust duct can be held in a state where it is prevented from rotating at a predetermined position. Furthermore, the elastic claw provided on the tip side of the protruding piece protruding from the opening end of the ventilation duct locks to the periphery of the ventilation hole on the inner surface side of the outer case in a state where the ventilation duct is connected to the coupling cylinder, so that the ventilation The duct can be securely fixed to the outer box of the storage box. That is, the work of fixing the ventilation duct to the storage box can be performed at the same time by simply inserting the ventilation duct into the coupling hole.
【００１２】[0012]
【発明の実施の形態】次に、本発明の実施の形態を図１
乃至図７を参照して説明する。電子制御ユニット２０の
収容箱は、自動車のエンジンルーム内に配置されるもの
であり、該収容箱は、樹脂製の内箱１１、外箱１２、蓋
１３とを備え、内箱１１と外箱１２とは固定して収容箱
本体１０を構成している。FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIGS. The storage box of the electronic control unit 20 is disposed in the engine room of the automobile. The storage box includes a resin inner box 11, an outer box 12, and a lid 13. 12, the housing box body 10 is fixed.
【００１３】上記内箱１１は、上面を電子制御ユニット
挿入用の開口１１ａとした直方体形状の電子制御ユニッ
ト収容部（以下、ユニット収容部と略す）１１ｂの上部
より水平方向へ外周壁部１１ｃを突設している。外箱１
２には、内周面に段部１２ａを設け、該段部１２ａに内
箱１１の外周壁部１１ｃを固定して、内箱１１を外箱１
２内に収容し、該収容状態において、外箱１２の内面と
内箱１１のユニット収容部１１ｂの外面との間に冷却空
気循環用の空間１４を設けている。The inner box 11 has an outer peripheral wall portion 11c extending in a horizontal direction from an upper portion of a rectangular parallelepiped electronic control unit accommodating portion (hereinafter abbreviated as a unit accommodating portion) 11b having an upper surface formed with an opening 11a for inserting the electronic control unit. It is protruding. Outer box 1
2, an inner peripheral surface 11c of the inner box 11 is fixed to the step 12a, and the inner box 11 is
2, a space 14 for cooling air circulation is provided between the inner surface of the outer case 12 and the outer surface of the unit housing portion 11b of the inner case 11 in the housed state.
【００１４】外箱１２には、その一面に排気穴２１を設
けると共に他面に吸気穴２５を設け、排気穴２１に排気
ダクト３１の一端を結合し、該排気ダクト３１の他端を
ラジエータ２６の背面側に設置した電動ファン９の背面
側ダクト２７と連通させている。また、吸気穴２５に吸
気ダクト２８の一端を結合し、該吸気ダクト２８の他端
を車外に開口する位置に固定している。The outer box 12 is provided with an exhaust hole 21 on one surface and an intake hole 25 on the other surface, one end of an exhaust duct 31 is connected to the exhaust hole 21, and the other end of the exhaust duct 31 is connected to a radiator 26. Is connected to the rear duct 27 of the electric fan 9 installed on the rear side of the electric fan 9. Further, one end of an intake duct 28 is connected to the intake hole 25, and the other end of the intake duct 28 is fixed at a position where it opens outside the vehicle.
【００１５】上記のように、外箱１２の吸気穴２５に吸
気ダクト２８を接続すると共に排気穴２１に排気ダクト
３１を接続することにより、吸気ダクト２８より吸引し
た大気を収容箱２０の冷却空気循環用の空間１４を通し
て排気ダクト３１へと強制的にさせ、この冷却空気によ
り電子制御ユニット２０を冷却するようにしている。As described above, by connecting the intake duct 28 to the intake hole 25 of the outer box 12 and connecting the exhaust duct 31 to the exhaust hole 21, the air sucked from the intake duct 28 is cooled by the cooling air of the storage box 20. The electronic control unit 20 is forcibly forced through the circulation space 14 to the exhaust duct 31 and cooled by the cooling air.
【００１６】上記排気穴２１と排気ダクト３１の結合構
造は、図３乃至図６に示す如くであり、外箱１２の排気
穴２１の周縁より結合筒２２を突設している。該結合筒
２２は、排気穴２１の内周縁の一部より突設した円弧状
周壁からなる嵌合部２３と、排気穴２１の内周縁の残部
より所要寸法をあけた外周より突設した円弧状周壁から
なるガイド部２４とより構成している。The connecting structure of the exhaust hole 21 and the exhaust duct 31 is as shown in FIGS. 3 to 6, and the connecting cylinder 22 projects from the peripheral edge of the exhaust hole 21 of the outer box 12. The coupling cylinder 22 has a fitting portion 23 formed of an arc-shaped peripheral wall protruding from a part of the inner peripheral edge of the exhaust hole 21, and a circle protruding from an outer periphery having a required dimension from the remaining inner peripheral edge of the exhaust hole 21. It comprises a guide portion 24 having an arc-shaped peripheral wall.
【００１７】詳しくは、図３（Ａ）（Ｂ）に示すよう
に、上記嵌合部２３は排気穴２１の略半周部に相当する
部分２３ａと、該半周部の部分の周方向中心と対向する
位置の部分２３ｂとからなり、ガイド部２４は残部の対
向する２つの部分２４ａ、２４ｂとからなる。このガイ
ド部２４は排気穴２１の内周縁より所定寸法Ｌをあけた
外箱外面より突設している。上記嵌合部２３とガイド部
２４との接合部は連続させて、図３に示すように、長さ
Ｌ１の異形の結合筒２２を形成している。More specifically, as shown in FIGS. 3 (A) and 3 (B), the fitting portion 23 is opposed to a portion 23a corresponding to a substantially half peripheral portion of the exhaust hole 21 and a circumferential center of the half peripheral portion. The guide portion 24 is composed of the remaining two opposing portions 24a and 24b. The guide portion 24 is provided so as to protrude from the outer surface of the outer box having a predetermined dimension L from the inner peripheral edge of the exhaust hole 21. The connecting portion between the fitting portion 23 and the guide portion 24 is continuous to form a modified connecting cylinder 22 having a length L1 as shown in FIG.
【００１８】上記ガイド部２４（２４ａ、２４ｂ）の内
周面の周方向中央部には、突出端より排気穴２１の内周
縁へと傾斜させたテーパ部２４ｃ、２４ｄを設けてい
る。また、嵌合部２３ａの周方向中心の先端部に位置決
め用の凹部２３ｃを形成している。At the center of the inner peripheral surface of the guide portion 24 (24a, 24b) in the circumferential direction, there are provided tapered portions 24c, 24d inclined from the protruding end to the inner peripheral edge of the exhaust hole 21. Further, a concave portion 23c for positioning is formed at the distal end of the fitting portion 23a at the center in the circumferential direction.
【００１９】一方、排気ダクト３１は、図４（Ａ）
（Ｂ）に示すように、排気穴２１との結合側先端部に、
排気ダクト３１の管部３２と段差３３を設けて小径筒部
３４を突設している。この小径筒部３４の開口端周縁よ
りに周方向に間隔をあけて、３つの突出片３５を設け、
これら突出片３５の先端を外方へ屈曲させて弾性爪３６
を設けている。On the other hand, the exhaust duct 31 is shown in FIG.
As shown in (B), at the end on the coupling side with the exhaust hole 21,
A small-diameter cylindrical portion 34 is provided so as to protrude by providing a tube portion 32 and a step 33 of the exhaust duct 31. Three projecting pieces 35 are provided at intervals from the peripheral edge of the opening end of the small-diameter cylindrical portion 34 in the circumferential direction,
The distal ends of these projecting pieces 35 are bent outward to form the elastic claws 36.
Is provided.
【００２０】さらに、上記段差３３より小径筒部３４の
外面に位置決め用の凸部３７を設け、該凸部３７を上記
位置決め用の凹部２３ｃと嵌合するようにしている。さ
らに、管部３２の外周の半周部に、段差３３にかけて閉
鎖用突起部３８を設けている。この閉鎖用突起部３８は
上記一対のガイド部２４ａ、２４ｂ外径よりも大径と
し、ガイド部２４ａ、２４ｂの先端部に当接して、ガイ
ド部２４ａ、２４ｂの先端開口を閉鎖するようにしてい
る。Further, a convex portion 37 for positioning is provided on the outer surface of the cylindrical portion 34 having a smaller diameter than the step 33, and the convex portion 37 is fitted to the concave portion 23c for positioning. Further, a closing projection 38 is provided on the semi-peripheral portion of the outer periphery of the tube portion 32 over the step 33. The closing projection 38 has a larger diameter than the outer diameter of the pair of guides 24a, 24b, and comes into contact with the distal ends of the guides 24a, 24b so as to close the distal openings of the guides 24a, 24b. I have.
【００２１】上記小径筒部３４の長さＬ２は結合筒２２
の長さＬ１より若干短くし、段差３３に結合筒２２の先
端面が当接した状態で、小径筒部３４より突出した突出
片３５の弾性爪３６が外箱１２の内面側で排気穴２１の
周縁に係止するように設定している。The length L2 of the small-diameter cylindrical portion 34 is
Is slightly shorter than the length L1, and the elastic claw 36 of the protruding piece 35 protruding from the small-diameter cylindrical portion 34 is fitted to the exhaust hole 21 on the inner surface side of the outer box 12 in a state where the distal end surface of the connecting cylinder 22 abuts the step 33. It is set so as to be locked to the peripheral edge of.
【００２２】上記排気穴２１と排気ダクト３１との結合
は、自動車の組立工程で行われる。この工程時、排気ダ
クト３１の他端は自動車に搭載した電動ファン９の背面
側ダクト２７に結合されており、かつ、内箱１１を外箱
１２内に固定した収容箱本体１０もエンジンルーム所定
位置に搭載されている。The connection between the exhaust hole 21 and the exhaust duct 31 is performed in an automobile assembly process. In this step, the other end of the exhaust duct 31 is connected to the rear side duct 27 of the electric fan 9 mounted on the automobile, and the housing box body 10 in which the inner box 11 is fixed in the outer box 12 is also fixed in the engine room. Mounted in position.
【００２３】この状態で、排気ダクト３１の一端を排気
穴２１に挿入して結合する。該結合時、図５に示すよう
に、排気ダクト３１の３つの突出片３５を結合筒２２に
挿入する。この時、結合筒２２は内径を大としたガイド
部２４を備え、結合筒２２の内径が、３つの突出片３５
を突設した小径筒部３４の外径よりも大とし、かつ、排
気ダクト３１の挿入端が円筒形状ではなく３つの突出片
３５に分割しているため、３つの突出片３５を結合筒２
２に容易に挿入できる。In this state, one end of the exhaust duct 31 is inserted into the exhaust hole 21 and connected. At this time, the three projecting pieces 35 of the exhaust duct 31 are inserted into the connecting cylinder 22 as shown in FIG. At this time, the connecting cylinder 22 is provided with the guide portion 24 having a large inner diameter, and the inner diameter of the connecting cylinder 22 is increased by three projecting pieces 35.
Is larger than the outer diameter of the small-diameter cylindrical portion 34 protruding, and the insertion end of the exhaust duct 31 is divided into three protruding pieces 35 instead of a cylindrical shape.
2 can be easily inserted.
【００２４】結合筒２２内に挿入された突出片３５は、
ガイド部２４のテーパ部２４ｃ、２４ｄに弾性爪３６が
摺接しながら結合筒２２の内部へと挿入され、その結
果、排気ダクト３１の中心と排気穴２１の中心とがセン
タリングされる。このように、排気ダクト３１の挿入時
に排気穴２１と正確に位置合わせしなくても、突出片３
５を結合筒２２内に挿入するだけで自動的に位置合わせ
される。The projecting piece 35 inserted into the connecting cylinder 22
The elastic claws 36 are inserted into the coupling tube 22 while slidingly contacting the tapered portions 24c and 24d of the guide portion 24. As a result, the center of the exhaust duct 31 and the center of the exhaust hole 21 are centered. In this way, even when the exhaust duct 31 is not inserted, the projection piece 3 does not need to be accurately aligned with the exhaust hole 21.
5 can be automatically aligned simply by inserting it into the connecting cylinder 22.
【００２５】さらに、排気ダクト３１を押し込むと、結
合筒２２の先端面が排気ダクト３１の段差３３に当接
し、突出片３５の弾性爪３６が外箱１２の内面側まで達
し、弾性復帰して排気穴２１の内周縁に係止する。Further, when the exhaust duct 31 is pushed in, the distal end surface of the connecting cylinder 22 comes into contact with the step 33 of the exhaust duct 31, the elastic claws 36 of the projecting pieces 35 reach the inner surface side of the outer box 12, and return elastically. It is locked on the inner peripheral edge of the exhaust hole 21.
【００２６】このように所定深さまで排気ダクト３１を
押し込みながら、結合筒２２の先端の位置決め用の凹部
２３ｃに排気ダクト３１側の凸部３７が嵌合するように
排気ダクト３１を回転させる。凸部３７が凹部２３ｃに
嵌合した位置で、排気ダクト３１の閉鎖用突起部３８は
ガイド部２４と対応する位置となり、閉鎖用突起部３８
の段差側端面がガイド部２４（２４ａ、２４ｂ）の先端
面と当接し、外方へ広げたガイド部２４の先端面を閉鎖
する。While pushing the exhaust duct 31 to a predetermined depth in this way, the exhaust duct 31 is rotated so that the convex portion 37 on the exhaust duct 31 side fits into the positioning concave portion 23c at the tip of the coupling cylinder 22. At the position where the convex portion 37 is fitted into the concave portion 23c, the closing projection 38 of the exhaust duct 31 becomes a position corresponding to the guide portion 24, and the closing projection 38
Of the guide portion 24 abuts on the tip end surface of the guide portion 24 (24a, 24b), and closes the tip end surface of the guide portion 24 expanded outward.
【００２７】上記のように、排気ダクト３１を収容箱本
体１０の排気穴２１に容易に挿入できると共に、確実に
位置合わせして結合することができる。その結果、結合
部からの空気漏れを防止でき、収容箱の冷却空気循環用
の空間１４に確実に冷却空気を強制循環することがで
き、電子制御ユニット１の過熱を防止することができ
る。As described above, the exhaust duct 31 can be easily inserted into the exhaust hole 21 of the housing box main body 10, and can be securely aligned and connected. As a result, it is possible to prevent air leakage from the coupling portion, to reliably circulate cooling air into the cooling air circulation space 14 of the storage box, and to prevent the electronic control unit 1 from overheating.
【００２８】[0028]
【発明の効果】以上の説明より明らかなように、本発明
によれば、電子制御ユニット収容箱の通気穴に通気ダク
トを簡単かつ確実に結合できる。特に、一端が電動ファ
ン側に固定された排気ダクトの他端を、所定位置に固定
された電子制御ユニット収容箱の排気穴に結合する作業
条件の悪い状態においても、簡単かつ確実に結合するこ
とができる。また、確実にセンタリングされた状態で結
合されるため、空気漏れの発生はなく、その結果、電子
制御ユニット収容箱に冷却空気を強制循環させて、電子
制御ユニットの過熱を防止することができる。As is apparent from the above description, according to the present invention, the ventilation duct can be simply and reliably connected to the ventilation hole of the electronic control unit housing box. In particular, the other end of the exhaust duct, whose one end is fixed to the electric fan side, is connected to the exhaust hole of the electronic control unit housing box fixed at a predetermined position. Can be. Further, since the coupling is performed in a state where the electronic control unit is securely centered, no air leakage occurs, and as a result, the cooling air is forcibly circulated through the electronic control unit housing box, thereby preventing the electronic control unit from being overheated.
【図１】 本発明に係る電子制御ユニットの収容箱の分
解斜視図である。FIG. 1 is an exploded perspective view of a storage box of an electronic control unit according to the present invention.
【図２】 上記収容箱の断面図である。FIG. 2 is a sectional view of the storage box.
【図３】 上記収容箱に設ける排気穴を示し、（Ａ）は
側面図、（Ｂ）は（Ａ）のＢ−Ｂ線断面図である。3A and 3B show an exhaust hole provided in the storage box, wherein FIG. 3A is a side view, and FIG. 3B is a sectional view taken along line BB of FIG. 3A.
【図４】 上記収容箱の排気穴に結合する排気ダクトの
要部を示し、（Ａ）は斜視図、（Ｂ）は正面図である。4A and 4B show a main part of an exhaust duct coupled to an exhaust hole of the storage box, wherein FIG. 4A is a perspective view and FIG. 4B is a front view.
【図５】 排気穴に排気ダクトを挿入する状態を示す図
面である。FIG. 5 is a view showing a state where an exhaust duct is inserted into an exhaust hole.
【図６】 排気穴に排気ダクトを結合した状態を示す図
面である。FIG. 6 is a view showing a state where an exhaust duct is coupled to an exhaust hole.
【図７】 収容箱を排気ダクトを介して電動ファンに接
続した状態を示す図面である。FIG. 7 is a drawing showing a state in which the storage box is connected to an electric fan via an exhaust duct.
【図８】 従来例の収容箱の断面図である。FIG. 8 is a cross-sectional view of a conventional storage box.
【図９】 図９の分解斜視図である。FIG. 9 is an exploded perspective view of FIG. 9;
【図１０】 収容箱の通気経路を示す概略図である。FIG. 10 is a schematic diagram showing a ventilation path of the storage box.
９ 電動ファン １０ 収容箱 １１ 内箱 １２ 外箱 １３ 蓋 １４ 冷却空気循環用の空間 ２０ 電子制御ユニット ２１ 排気穴 ２２ 結合筒 ２３ 嵌合部 ２３ｃ 位置決め用凹部 ２４ ガイド部 ２４ｃ、２４ｄ テーパ部 ３１ 排気ダクト ３２ 小径筒部 ３５ 突出片 ３６ 弾性爪 ３７ 位置決め用凸部 Reference Signs List 9 electric fan 10 storage box 11 inner box 12 outer box 13 lid 14 space for cooling air circulation 20 electronic control unit 21 exhaust hole 22 coupling cylinder 23 fitting part 23c positioning concave part 24 guide part 24c, 24d taper part 31 exhaust duct 32 Small-diameter cylindrical part 35 Projection piece 36 Elastic claw 37 Positioning projection
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田渕 博明 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroaki Tabuchi 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation
Claims (2)
却空気循環用の空間をあけて上記内箱を収容する外箱を
備え、該外箱に設けた通気穴を空冷用の通気ダクトと接
続し、上記空間に冷却空気を強制循環させる自動車用電
子制御ユニット収容箱と空冷用ダクトの結合構造であっ
て、 上記外箱の通気穴の周縁より通気ダクトとの結合筒を突
設し、該結合筒を、通気穴の内周縁の一部より突設した
嵌合部と、内周縁の残部より、所要寸法をあけた外周位
置より突設したガイド部とより構成し、該ガイド部の内
周面に、突出端より通気穴の内周縁へと傾斜させたテー
パ部を設けると共に、上記嵌合部の先端部に位置決め用
の凹部を形成し、かつ、 上記通気ダクトの結合側の開口端周縁よりに周方向に間
隔をあけて、弾性爪を先端に設けた突出片を設けると共
に、開口端より所要寸法をあけた外周部に上記凹部と嵌
合する凸部と、上記ガイド部の外径よりも大径とした突
起部を設け、 上記通気ダクトの突出片を上記ガイド部のテーパ部によ
りガイドして上記結合筒に挿入して弾性爪を通気穴の外
箱内面に係止して結合する構成としている自動車用電子
制御ユニット収容箱の空冷用ダクトの結合構造。1. An inner box for accommodating an electronic control unit, and an outer box for accommodating the inner box with a space for cooling air circulation, and a ventilation hole provided in the outer box is provided with a ventilation duct for air cooling. A connecting structure for connecting an electronic control unit for a vehicle and an air cooling duct for connecting and forcibly circulating cooling air in the space, wherein a connecting cylinder with the ventilation duct protrudes from a periphery of a ventilation hole of the outer box; The coupling cylinder includes a fitting portion protruding from a part of an inner peripheral edge of the ventilation hole, and a guide portion protruding from an outer peripheral position having a required dimension from a remaining portion of the inner peripheral edge. An inner peripheral surface is provided with a tapered portion inclined from the protruding end to the inner peripheral edge of the ventilation hole, a positioning concave portion is formed at a tip end of the fitting portion, and an opening on the coupling side of the ventilation duct is provided. A projecting piece with an elastic claw at the tip is spaced apart from the peripheral edge in the circumferential direction. At the same time, a convex portion which fits into the concave portion and a protrusion having a diameter larger than the outer diameter of the guide portion are provided on an outer peripheral portion having a required dimension from the opening end. A structure for connecting an air cooling duct of an electronic control unit housing box for an automobile, wherein the elastic claw is guided by a tapered portion of the section and inserted into the connecting cylinder to lock and connect the elastic claws to the inner surface of the outer box of the ventilation hole.
からなり、結合筒に一端を接続した排気ダクトからなる
上記通気ダクトの他端をラジエータ用電動ファンの背面
ダクトと接続している請求項１に記載の自動車用電子制
御ユニット収容箱と空冷用ダクトの結合構造。2. The vent hole provided with the connecting cylinder comprises an exhaust hole, and the other end of the ventilation duct comprising an exhaust duct having one end connected to the connecting cylinder is connected to the rear duct of the radiator electric fan. A connection structure of the electronic control unit housing box for a vehicle according to claim 1 and an air cooling duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15825198A JP3312596B2 (en) | 1998-06-05 | 1998-06-05 | Combined structure of electronic control unit housing box for car and air cooling duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15825198A JP3312596B2 (en) | 1998-06-05 | 1998-06-05 | Combined structure of electronic control unit housing box for car and air cooling duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11355931A true JPH11355931A (en) | 1999-12-24 |
| JP3312596B2 JP3312596B2 (en) | 2002-08-12 |
Family
ID=15667557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15825198A Expired - Fee Related JP3312596B2 (en) | 1998-06-05 | 1998-06-05 | Combined structure of electronic control unit housing box for car and air cooling duct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3312596B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007161072A (en) * | 2005-12-13 | 2007-06-28 | Honda Motor Co Ltd | Ventilation structure of storage box for electronic unit |
| WO2009022662A1 (en) * | 2007-08-13 | 2009-02-19 | Nifco Inc. | Attaching structure |
-
1998
- 1998-06-05 JP JP15825198A patent/JP3312596B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007161072A (en) * | 2005-12-13 | 2007-06-28 | Honda Motor Co Ltd | Ventilation structure of storage box for electronic unit |
| JP4527050B2 (en) * | 2005-12-13 | 2010-08-18 | 本田技研工業株式会社 | Ventilation structure of electronic unit storage box |
| WO2009022662A1 (en) * | 2007-08-13 | 2009-02-19 | Nifco Inc. | Attaching structure |
| JP2009045953A (en) * | 2007-08-13 | 2009-03-05 | Toyota Motor Corp | Mounting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3312596B2 (en) | 2002-08-12 |
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