JP6109124B2 - Housing for vehicle mounting - Google Patents
Housing for vehicle mounting Download PDFInfo
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- JP6109124B2 JP6109124B2 JP2014163565A JP2014163565A JP6109124B2 JP 6109124 B2 JP6109124 B2 JP 6109124B2 JP 2014163565 A JP2014163565 A JP 2014163565A JP 2014163565 A JP2014163565 A JP 2014163565A JP 6109124 B2 JP6109124 B2 JP 6109124B2
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Description
本発明は、内部に回路基板を含む車両搭載用筐体に関し、特に、耐被水性を備える車両搭載用筐体に関する。 The present invention relates to a vehicle mounting housing including a circuit board therein, and particularly to a vehicle mounting housing having water resistance.
車両に搭載され、内部に回路基板を有する電気接続箱のような筐体においては、内部に雨水等が侵入し、内部の回路基板等に水が到達すると故障の原因となる。そこで、かかる故障を防止するために様々な対策がなされてきている。 In a housing such as an electric junction box that is mounted on a vehicle and has a circuit board inside, rainwater or the like enters the inside, and if water reaches the internal circuit board or the like, it causes a failure. Therefore, various measures have been taken to prevent such a failure.
例えば、特許文献１は、コネクタのフード部内への水の浸入を抑制することを目的とした電気接続箱を開示する。この電気接続箱は、開口部が設けられた合成樹脂製のケースと、開口部内に配されると共に相手側コネクタと嵌合可能なフード部を有するコネクタと、コネクタのうち相手側コネクタの嵌合方向前方に位置すると共に、ロック爪を成形するための型抜き孔が形成された底壁と、底壁に設けられて型抜き孔の孔縁を包囲すると共にフード部と反対側の方向に突出する止水壁などを備える。そして、その底壁の外面からの止水壁の突出高さ寸法は、底壁の外面からの凸部の突出高さ寸法以上に設定されている。 For example, Patent Document 1 discloses an electrical junction box for the purpose of suppressing water intrusion into the hood portion of a connector. This electrical junction box has a case made of synthetic resin provided with an opening, a connector disposed in the opening and having a hood portion that can be fitted to the mating connector, and fitting of the mating connector of the connectors The bottom wall is located in the front direction and has a punched hole for molding the lock claw, and is provided in the bottom wall to surround the hole edge of the punched hole and project in the direction opposite to the hood portion. It has a water blocking wall. And the protrusion height dimension of the water stop wall from the outer surface of the bottom wall is set more than the protrusion height dimension of the convex part from the outer surface of the bottom wall.
また、特許文献２は、内部への水の侵入を防止するとともに、侵入した水を容易に排水する電気接続箱を開示する。この電気接続箱は、リレー等の電気部品を搭載する部品搭載面を有するベースブロックと、電気部品を覆うアッパーカバーと、を備える。そして、部品搭載面は、アッパーカバーが備える周囲部の下端よりも上方に位置している。ベースブロックの周囲には、アッパーカバーの周囲部と嵌合する第１の周壁を備え、その第１の周壁の上端はアッパーカバーの周囲部の下端より上方に位置している。また、部品搭載面は、第１の周壁の上端よりも上方に位置している。 Patent Document 2 discloses an electrical junction box that prevents water from entering the interior and easily drains the invaded water. The electrical junction box includes a base block having a component mounting surface on which an electrical component such as a relay is mounted, and an upper cover that covers the electrical component. And the component mounting surface is located above the lower end of the surrounding part with which an upper cover is provided. Around the base block, there is provided a first peripheral wall that fits with the peripheral portion of the upper cover, and the upper end of the first peripheral wall is located above the lower end of the peripheral portion of the upper cover. Moreover, the component mounting surface is located above the upper end of the first peripheral wall.
また、特許文献３は、ケース内に入った水が止水壁を超えて回路基板等の側に浸入することを防止することを目的とした電気接続箱を開示する。この電気接続箱は、ケースの上面部に対して陥没した筒状陥没部を有し、その筒状陥没部の閉塞された底面部には、端子金具の一端側が挿通される挿通孔が形成されている。そして、この電気接続箱には、挿通孔に端子金具が挿通された状態で筒状陥没部の外面に対向する一対の止水壁が設けられ、筒状陥没部及び止水壁の互いに対向する面のうち、少なくとも一方の面には、対向する面間に浸入した水を排水経路に導く排水用切欠部が形成されている。 Patent Document 3 discloses an electrical junction box for the purpose of preventing water entering the case from entering the side of the circuit board or the like beyond the water blocking wall. This electrical junction box has a cylindrical depression that is depressed with respect to the upper surface of the case, and an insertion hole through which one end side of the terminal fitting is inserted is formed in the closed bottom of the cylindrical depression. ing. The electrical junction box is provided with a pair of water blocking walls facing the outer surface of the cylindrical depression with the terminal fitting inserted through the insertion hole, and the cylindrical depression and the water blocking wall face each other. At least one of the surfaces is formed with a drainage notch for guiding water that has entered between the opposing surfaces to the drainage path.
また、特許文献４は、簡単な構造で箱内への水滴等の浸入と、箱内の温度上昇を抑制することを目的とした電気接続箱を開示する。この電気接続箱は、電気部品を収容する箱本体と、箱本体の上方開口に被嵌される防水カバーとを備える。箱本体の周壁開口縁に対応する防水カバーの周壁端には、先端部から外周方向へ張り出すように連設されたフランジ部の外周端から垂下されたスカート部が形成されている。箱本体の周壁開口縁には、フランジ部に対応して支持当接する当接部より内側に突設されて外側面が防水カバーの周壁内面と対向する内側壁と、内側壁と平行に当接部に凹設された周溝とが設けられている。周溝の溝内側壁及び溝外側壁には、周溝に沿って互いに対向しないように貫通され、それぞれ箱本体内及び箱本体外に連通する切欠き開口が形成されている。 Patent Document 4 discloses an electrical junction box with a simple structure for the purpose of suppressing the ingress of water droplets and the like into the box and the temperature rise in the box. The electrical junction box includes a box body that houses electrical components, and a waterproof cover that is fitted into an upper opening of the box body. On the peripheral wall end of the waterproof cover corresponding to the peripheral wall opening edge of the box body, a skirt portion is formed that hangs down from the outer peripheral end of the flange portion that is continuously provided so as to protrude from the tip end portion in the outer peripheral direction. The inner peripheral wall of the box body projects inward from the abutting portion that supports and abuts corresponding to the flange portion, and the outer side surface of the inner wall is opposed to the inner surface of the peripheral wall of the waterproof cover. And a circumferential groove recessed in the portion. A notch opening is formed in the inner wall and the outer wall of the circumferential groove so as not to face each other along the circumferential groove and communicates with the inside of the box body and the outside of the box body.
そこで、本発明は、車両搭載用筐体内部に侵入した水が回路基板に到達することを、簡単な構造で防止する車両搭載用筐体を提供する。 Therefore, the present invention provides a vehicle mounting housing that prevents water that has entered the vehicle mounting housing from reaching the circuit board with a simple structure.
上記課題を解決するために、第１底部と、その第１底部の周縁部に立設する第１壁部と、を有する第１筐体部材と、第２底部と、その第２底部の周縁部に立設する第２壁部と、第２底部および第２壁部の両方に亘って設けられるリブと、を有する第２筐体部材と、リブの上端に載置される回路基板と、を備え、第２壁部が第１壁部の内側に嵌合する車両搭載用の筐体であって、回路基板がリブの上端に当接する回路基板当接部の第２底部からの高さは、リブ近傍の第２壁部の第２底部からの高さと同じであり、リブは、回路基板当接部と第２壁部の間に回路基板当接部の高さおよびリブ近傍の第２壁部の高さとは異なる高さを有する変形部を有する、筐体が提供される。
これによれば、車両搭載用筐体内部に侵入した水が回路基板に到達することを、簡単な構造で防止することができる。
In order to solve the above problems, a first housing member having a first bottom portion and a first wall portion standing on a peripheral portion of the first bottom portion, a second bottom portion, and a peripheral edge of the second bottom portion A second wall member standing on the part, a rib provided across both the second bottom part and the second wall part, a circuit board placed on the upper end of the rib, The height of the circuit board abutting portion from which the second wall portion is fitted to the inside of the first wall portion, the circuit board abutting on the upper end of the rib from the second bottom portion Is the same as the height from the second bottom of the second wall near the rib, and the rib is located between the height of the circuit board contact portion and the second height near the rib between the circuit board contact portion and the second wall portion. A housing having a deformed portion having a height different from the height of the two wall portions is provided.
According to this, it is possible to prevent the water that has entered the inside of the vehicle mounting casing from reaching the circuit board with a simple structure.
また、上記課題を解決するために、第１底部と、その第１底部の周縁部に立設する第１壁部と、を有する第１筐体部材と、第２底部と、その第２底部の周縁部に立設する第２壁部と、第２底部および第２壁部の両方に亘って設けられるリブと、を有する第２筐体部材と、リブの上端に載置される回路基板と、を備え、第２壁部が第１壁部の内側に嵌合する車両搭載用の筐体であって、回路基板がリブの上端に当接する回路基板当接部の第２底部からの高さは、リブ近傍の第２壁部の第２底部からの高さより低く、リブは、回路基板当接部と第２壁部の間に、回路基板当接部の高さより低い高さを有する変形部を有する、または、リブ近傍の第２壁部の高さより高い高さを有する変形部を有する、筐体が提供される。
これによれば、車両搭載用筐体内部に侵入した水が回路基板に到達することを、簡単な構造で防止することができる。
Moreover, in order to solve the said subject, the 1st housing member which has the 1st bottom part and the 1st wall part standingly arranged in the peripheral part of the 1st bottom part, the 2nd bottom part, and the 2nd bottom part A second housing member having a second wall portion standing on the peripheral edge portion of the rim, a rib provided over both the second bottom portion and the second wall portion, and a circuit board placed on the upper end of the rib And the second wall portion is fitted to the inside of the first wall portion, and is mounted from the second bottom portion of the circuit board contact portion where the circuit board contacts the upper end of the rib. The height is lower than the height from the second bottom of the second wall near the rib, and the rib is lower than the height of the circuit board contact part between the circuit board contact part and the second wall part. There is provided a housing having a deforming portion having or having a deforming portion having a height higher than the height of the second wall portion in the vicinity of the rib.
According to this, it is possible to prevent the water that has entered the inside of the vehicle mounting casing from reaching the circuit board with a simple structure.
以上説明したように、本発明によれば、車両搭載用筐体内部に侵入した水が回路基板に到達することを、簡単な構造で防止する車両搭載用筐体を提供できる。 As described above, according to the present invention, it is possible to provide a vehicle mounting housing that prevents water that has entered the vehicle mounting housing from reaching the circuit board with a simple structure.
以下では、図面を参照しながら、本発明に係る各実施例について説明する。
＜第一実施例＞
図１乃至図４を参照して、本実施例に係る車両搭載用筐体１を説明する。本実施例の車両搭載用筐体１は、車両内に取り付けられる電気接続箱１である。電気接続箱１は、ケーブル等を介して車両内の電源や車載電装品（いずれも図示せず）と内部に有する回路基板とを接続する。なお、回路基板上に搭載される電子部品は、図においては省略する。電気接続箱１は、車内のセンターコンソール、ドア、エンジンルームなどいずれの箇所にも取り付けられることが可能である。車内のセンターコンソールに設置される電気接続箱は、運転者等が飲み物をこぼしたりした際に耐被水性が必要であり、ドアに設置される電気接続箱は、雨天の際にドアを開けた場合に雨が当たるため耐被水性が必要であり、エンジンルームに設置される電気接続箱は、雨天の走行中に水分が侵入することがあるので耐被水性が必要となる。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Example>
With reference to FIG. 1 thru | or FIG. 4, the housing | casing 1 for vehicle mounting concerning a present Example is demonstrated. The vehicle mounting housing 1 of the present embodiment is an electrical connection box 1 that is mounted in the vehicle. The electrical junction box 1 connects a power source in the vehicle and on-vehicle electrical components (both not shown) and a circuit board included therein via a cable or the like. Note that electronic components mounted on the circuit board are omitted in the figure. The electrical junction box 1 can be attached to any location such as a center console, a door, and an engine room in the vehicle. The electrical junction box installed on the center console in the car needs to be waterproof when the driver spills a drink, and the electrical junction box installed on the door opened the door when it rained In such a case, it is necessary to have moisture resistance because it rains, and the electrical junction box installed in the engine room needs moisture resistance because moisture may enter during running in the rain.
電気接続箱１は、矩形の回路基板３０と、合成樹脂製の２つの部材、すなわち回路基板３０を開口側から収容する筐体本体２０（第２筐体部材）および筐体本体２０の開口側を嵌め込むカバー１０（第１筐体部材）とから構成される。カバー１０は、内部の回路基板３０を水滴や塵埃等から保護すると共に回路基板３０の交換などのために、筐体本体２０と着脱自在に固定される。 The electrical connection box 1 includes a rectangular circuit board 30 and two members made of synthetic resin, that is, a housing body 20 (second housing member) that houses the circuit board 30 from the opening side, and an opening side of the housing body 20 It is comprised from the cover 10 (1st housing member) which inserts. The cover 10 is detachably fixed to the housing body 20 in order to protect the internal circuit board 30 from water drops, dust, and the like and to replace the circuit board 30.
カバー１０（第１筐体部材１０）は、第１底部１１と第１底部１１の周縁部に立設する第１壁部１２とを有する。また、筐体本体２０（第２筐体部材２０）は、第２底部２１と第２底部２１の周縁部に立設する第２壁部２２とを有する。通常設置された時に上側となるカバー側からの水の侵入を防止するため、カバー１０は、筐体本体２０の開口側に取り付けられる際、筐体本体２０の第２壁部２２が第１壁部の内側に嵌合するように取り付けられる。カバー１０の第１壁部１２の内面と筐体本体２０の第２壁部２２の外面とは、塵埃などの侵入を防止するため密着させて固定される。しかし、両者を高い精度で密着させたとしても、水分は毛細管現象により両者の間に侵入する場合がある。本発明に係る車両搭載用筐体は、かかる水分が内部の回路基板に到達することを防止するためものである。 The cover 10 (first housing member 10) has a first bottom portion 11 and a first wall portion 12 standing on the peripheral edge portion of the first bottom portion 11. The housing body 20 (second housing member 20) includes a second bottom portion 21 and a second wall portion 22 erected on the peripheral edge of the second bottom portion 21. In order to prevent water from entering from the cover side which is the upper side when normally installed, when the cover 10 is attached to the opening side of the housing body 20, the second wall portion 22 of the housing body 20 has the first wall. It is attached to fit inside the part. The inner surface of the first wall portion 12 of the cover 10 and the outer surface of the second wall portion 22 of the housing body 20 are fixed in close contact to prevent intrusion of dust or the like. However, even if the two are brought into close contact with each other with high accuracy, moisture may enter between the two due to capillary action. The housing for mounting on a vehicle according to the present invention is for preventing such moisture from reaching the internal circuit board.
カバー１０の第１壁部１２は、第１壁部１２を貫通する孔１２２を備え、その孔１２２の内周面に被掛合部１２１を有する。また、筐体本体２０の第２壁部２２は、外面側から突出する掛合部２２１を有する。筐体本体２０とカバー１０は、掛合部２２１と被掛合部１２１とが互いに掛合することで、固定される。カバー１０は、弾性のある合成樹脂から形成されているので、取り付ける際に突出した掛合部２２１が第１壁部１２を押し広げ、掛合部２２１が孔１２２に達した時に元に戻ることで掛合部２２１が孔１２２に嵌る。掛合部２２１が孔１２２に嵌った結果、掛合部２２１は、孔１２２の内周面の被掛合部１２１に掛合する。なお、筐体本体２０とカバー１０の固定方法は、これに限定されず、例えば、筐体本体に凹部を、カバーに凸部を設けて互いを固定してもよい。 The first wall portion 12 of the cover 10 includes a hole 122 that penetrates the first wall portion 12, and has a hooked portion 121 on the inner peripheral surface of the hole 122. Further, the second wall portion 22 of the housing body 20 has a hooking portion 221 that protrudes from the outer surface side. The housing body 20 and the cover 10 are fixed when the hooking portion 221 and the hooked portion 121 are hooked with each other. Since the cover 10 is formed of an elastic synthetic resin, the hooking portion 221 that protrudes when the cover 10 is attached spreads the first wall portion 12, and when the hooking portion 221 reaches the hole 122, the cover 10 is returned to its original position. Part 221 fits into hole 122. As a result of the hooking part 221 fitting into the hole 122, the hooking part 221 is hooked to the hooked part 121 on the inner peripheral surface of the hole 122. In addition, the fixing method of the housing main body 20 and the cover 10 is not limited thereto, and for example, a concave portion may be provided on the housing main body, and a convex portion may be provided on the cover to fix each other.
回路基板３０を収容する筐体本体２０は、矩形の回路基板３０よりひと回り大きく形成され、回路基板３０の端面が第２壁部２２に当接しないようになっている。仮に、筐体本体２０の第２壁部２２とカバー１０の第１壁部１２との間に毛細管現象により水が侵入し、水が第２壁部２２の内側を水が伝ったとしても、回路基板３０に水が到達することを防止するためである。 The housing body 20 that houses the circuit board 30 is formed to be slightly larger than the rectangular circuit board 30 so that the end surface of the circuit board 30 does not contact the second wall portion 22. Even if water penetrates between the second wall portion 22 of the housing body 20 and the first wall portion 12 of the cover 10 due to capillary action, and the water is transmitted through the inside of the second wall portion 22, This is to prevent water from reaching the circuit board 30.
また、筐体本体２０（第２筐体部材２０）は、第２底部２１および第２壁部２２の両方に亘って設けられるリブ２３を有する。リブ２３は、第２底部２１と第２壁部２２とが互いに直角をなすように維持するための補強材として機能すると共に、その上端２３１に回路基板３０を載置するものとしても機能する。 The housing body 20 (second housing member 20) includes a rib 23 provided over both the second bottom portion 21 and the second wall portion 22. The rib 23 functions as a reinforcing material for maintaining the second bottom portion 21 and the second wall portion 22 at right angles to each other, and also functions as a device for placing the circuit board 30 on the upper end 231 thereof.
なお、筐体本体２０の第２壁部２２は、長辺側の第２壁部２２の上端のほぼ中央に切欠部２２４を１つずつ備える。切欠部２２４は、作業者が指に挟んで回路基板３０を筐体本体２０に収容する際、第２壁部２２が邪魔にならないように第２壁部２２の上端を、回路基板３０を取り付ける第２底部２１からの高さ、即ち、リブ２３の上端２３１と同じ高さとなるように切欠きした部分である。従って、切欠部２２４は、リブ２３に対応して備えられる。そうすると、リブ２３の近傍の第２壁部２２の第２底部２１からの高さは、切欠部２２４における第２壁部２２の高さを言う。なお、切欠部２２４は存在しなくてもよく、例えば、第２壁部２２の高さがすべてリブ２３の上端２３１と同じ高さであってもよい。 Note that the second wall portion 22 of the housing body 20 includes one cutout portion 224 at approximately the center of the upper end of the second wall portion 22 on the long side. The notch part 224 attaches the circuit board 30 to the upper end of the second wall part 22 so that the second wall part 22 does not get in the way when the operator holds the circuit board 30 in the housing body 20 with the fingers sandwiched between the fingers. This is a portion that is notched so as to have a height from the second bottom 21, that is, the same height as the upper end 231 of the rib 23. Therefore, the notch 224 is provided corresponding to the rib 23. Then, the height from the second bottom portion 21 of the second wall portion 22 in the vicinity of the rib 23 refers to the height of the second wall portion 22 in the notch portion 224. In addition, the notch part 224 may not exist, for example, the height of the 2nd wall part 22 may be the same height as the upper end 231 of the rib 23, for example.
本実施例では、回路基板３０がリブ２３の上端２３１に当接する回路基板当接部２３２の第２底部２１からの高さＨ２は、リブ２３の近傍の第２壁部２２の第２底部２１からの高さＨ１と同じである。むろん、回路基板当接部２３２の高さＨ２が、リブ２３の近傍の第２壁部２２の高さＨ１より高ければ、回路基板３０への水の到達は防止できる。そこで、本発明では、本実施例のように、回路基板当接部２３２の高さＨ２が、リブ２３の近傍の第２壁部２２の高さＨ１と等しい、または、後述する実施例のように、回路基板当接部２３２の高さＨ２が、リブ２３の近傍の第２壁部２２の高さＨ１より低い構成を有する。回路基板３０上に搭載される電子部品の大きさによっては、回路基板当接部２３２の高さＨ２が、リブ２３の近傍の第２壁部２２の高さＨ１より高くできない場合があるからである。 In the present embodiment, the height H2 from the second bottom portion 21 of the circuit board contact portion 232 where the circuit board 30 contacts the upper end 231 of the rib 23 is the second bottom portion 21 of the second wall portion 22 in the vicinity of the rib 23. It is the same as the height H1 from. Of course, if the height H2 of the circuit board abutting portion 232 is higher than the height H1 of the second wall portion 22 in the vicinity of the rib 23, water can be prevented from reaching the circuit board 30. Therefore, in the present invention, as in the present embodiment, the height H2 of the circuit board contact portion 232 is equal to the height H1 of the second wall portion 22 in the vicinity of the rib 23, or as in the embodiment described later. In addition, the height H2 of the circuit board abutting portion 232 is lower than the height H1 of the second wall portion 22 in the vicinity of the rib 23. Depending on the size of the electronic component mounted on the circuit board 30, the height H 2 of the circuit board contact part 232 may not be higher than the height H 1 of the second wall part 22 near the rib 23. is there.
リブ２３は、回路基板当接部２３２と第２壁部２２の間に、回路基板当接部２３２の高さＨ２およびリブ２３の近傍の第２壁部２２の高さＨ１より低い高さを有する変形部２３３を有する。この変形部２３３は、仮に、筐体本体２０の第２壁部２２とカバー１０の第１壁部１２との間に毛細管現象により水が侵入し、水が切欠部２２４における第２壁部２２の上端に達したとしても、第２壁部２２の上端と同じ高さに載置された回路基板３０に水が到達することを防止することができる。水は、リブ２３の上端２３１を伝わろうとしても、この変形部２３３の所で下方の第１底部２１の方へ導かれるからである。 The rib 23 has a height lower than the height H2 of the circuit board contact portion 232 and the height H1 of the second wall portion 22 in the vicinity of the rib 23 between the circuit board contact portion 232 and the second wall portion 22. It has the deformation part 233 which has. In the deformed portion 233, temporarily, water enters between the second wall portion 22 of the housing body 20 and the first wall portion 12 of the cover 10 by a capillary phenomenon, and the water enters the second wall portion 22 in the notch portion 224. Even when the upper end of the second wall portion 22 is reached, it is possible to prevent water from reaching the circuit board 30 placed at the same height as the upper end of the second wall portion 22. This is because water is guided toward the lower first bottom portion 21 at the deformed portion 233 even if it tries to travel along the upper end 231 of the rib 23.
ここで、図８を参照し、変形部２３３が、どのように水が到達することを防止するのかを具体的に説明する。なお、図８に表わされた車両搭載用筐体１は、図２の再掲なので説明を省略する。車両搭載用筐体１が被水すると、水ＷＴ１がカバー１０の側面（第１壁部１２など）を下方へ伝って孔１２２のところまで達する。大部分の水はさらに下方へ落下してしまうが、一部は孔１２２の内周面に回り込み、第２壁部２２と第１壁部１２との間に毛細管現象により水ＷＴ２が侵入する場合がある。水ＷＴ２が第２壁部２２の上端まで到達すると、次に水は、その上端の表面で、図視左方向および奥行き方向へ拡がり始める。図視左方向へ拡がり始めた水ＷＴ３は、変形部２３３の所まで来ると、下方へリブ２３の側面へ流れ落ち、変形部２３３よりさらに図視左方向へ到達することはない。このように、車両搭載用筐体１の内部に侵入した水が回路基板３０に到達することを、簡単な構造で防止することができる。 Here, with reference to FIG. 8, it demonstrates concretely how the deformation | transformation part 233 prevents water from reaching | attaining. Note that the on-vehicle housing 1 shown in FIG. 8 is shown again in FIG. When the vehicle mounting casing 1 is flooded, the water WT1 travels down the side surface (the first wall portion 12 and the like) of the cover 10 and reaches the hole 122. Most of the water falls further downward, but a part of the water goes around the inner peripheral surface of the hole 122 and the water WT2 enters between the second wall portion 22 and the first wall portion 12 due to capillary action. There is. When the water WT2 reaches the upper end of the second wall portion 22, the water starts to spread in the left direction and the depth direction in the figure on the surface of the upper end. When the water WT3 that has started to expand in the left direction in the drawing reaches the deformed portion 233, it flows down to the side surface of the rib 23 and does not reach the left direction in the drawing further than the deformed portion 233. In this way, it is possible to prevent water that has entered the inside of the vehicle-mounting casing 1 from reaching the circuit board 30 with a simple structure.
＜第一実施例の変形例＞
図５は、本実施例の変形例を示す。リブ２３’は、回路基板当接部２３２’と第２壁部２２’の間に、回路基板当接部２３２’の高さＨ２およびリブ２３’の近傍の第２壁部２２’の高さＨ１より高い高さを有する変形部２３３’を有する。本変形例は、リブ２３’の近傍の第２壁部２２’の高さＨ１とリブ２３’の上端２３１’の高さが同じ場合を示す。この構成によっても、仮に、第２壁部２２’と第１壁部との間に毛細管現象により水が侵入し、水が切欠部２２４における第２壁部２２’の上端に達したとしても、第２壁部２２’の上端と同じ高さに載置された回路基板３０に水が到達することを防止することができる。水は、リブ２３’の上端２３１’を伝わろうとしても、この変形部２３３’の所で堰きとめられるからである。
<Modification of the first embodiment>
FIG. 5 shows a modification of this embodiment. The rib 23 'is located between the circuit board contact part 232' and the second wall part 22 ', the height H2 of the circuit board contact part 232' and the height of the second wall part 22 'in the vicinity of the rib 23'. It has a deformed portion 233 ′ having a height higher than H1. This modification shows a case where the height H1 of the second wall portion 22 ′ in the vicinity of the rib 23 ′ is the same as the height of the upper end 231 ′ of the rib 23 ′. Even with this configuration, even if water penetrates between the second wall portion 22 ′ and the first wall portion by capillary action, and the water reaches the upper end of the second wall portion 22 ′ in the cutout portion 224, It is possible to prevent water from reaching the circuit board 30 placed at the same height as the upper end of the second wall portion 22 ′. This is because even if the water tries to travel along the upper end 231 ′ of the rib 23 ′, it is dammed up at the deformed portion 233 ′.
したがって、リブ２３／２３’は、回路基板当接部２３２／２３２’と第２壁部２２／２２’の間に回路基板当接部２３２／２３２’の高さＨ２およびリブ近傍の第２壁部２２／２２’の高さＨ１とは異なる高さを有する変形部２３３／２３３’を有することで、車両搭載用筐体内部に侵入した水が回路基板に到達することを、簡単な構造で防止することができる。 Accordingly, the rib 23/23 ′ is formed between the circuit board contact portion 232/232 ′ and the second wall portion 22/22 ′, and the height H2 of the circuit board contact portion 232/232 ′ and the second wall near the rib. By having the deformed portion 233/233 ′ having a height different from the height H1 of the portion 22/22 ′, the water that has entered the inside of the vehicle mounting case reaches the circuit board with a simple structure. Can be prevented.
＜第二実施例＞
図６を参照して、本実施例に係る変形部２３３を説明する。なお、上記実施例と異なる点を中心に述べる。上記実施例では、リブ２３の近傍の第２壁部２２の高さＨ１とリブ２３の上端２３１の高さが同じであったが、本実施例では、リブ２３Ａの上端２３１Ａの高さＨ２は、リブ２３Ａの近傍の第２壁部２２Ａの高さＨ１より低い。すなわち、回路基板３０がリブ２３Ａの上端２３１Ａに当接する回路基板当接部２３２Ａの第２底部２１Ａからの高さＨ２は、リブ２３Ａの近傍の第２壁部２２Ａの第２底部２１Ａからの高さＨ１より低い。
<Second Example>
With reference to FIG. 6, the deformation | transformation part 233 which concerns on a present Example is demonstrated. The points different from the above embodiment will be mainly described. In the above embodiment, the height H1 of the second wall portion 22 in the vicinity of the rib 23 and the height of the upper end 231 of the rib 23 are the same. However, in this embodiment, the height H2 of the upper end 231A of the rib 23A is The height H1 of the second wall portion 22A in the vicinity of the rib 23A is lower. That is, the height H2 from the second bottom portion 21A of the circuit board contact portion 232A where the circuit board 30 contacts the upper end 231A of the rib 23A is the height from the second bottom portion 21A of the second wall portion 22A in the vicinity of the rib 23A. Lower than H1.
そして、筐体本体２０Ａ（第２筐体部材２０Ａ）においては、リブ２３Ａは、回路基板当接部２３２Ａと第２壁部２２Ａの間に、回路基板当接部２３２Ａの高さＨ２より低い高さを有する変形部２３３Ａを有する。この変形部２３３Ａは、仮に、第２壁部２２Ａと第１壁部との間に毛細管現象により水が侵入し、水が切欠部２２４における第２壁部２２Ａの上端に達したとしても、第２壁部２２Ａの上端より低い高さに載置された回路基板３０に水が到達することを防止することができる。水は、回路基板当接部２３２Ａよりもさらに低い位置にある変形部２３３Ａの所で下方の第１底部２１Ａの方へ導かれるからである。これによれば、車両搭載用筐体内部に侵入した水が回路基板に到達することを、簡単な構造で防止することができる。 In the housing body 20A (second housing member 20A), the rib 23A is lower than the height H2 of the circuit board contact portion 232A between the circuit board contact portion 232A and the second wall portion 22A. It has the deformation part 233A having a thickness. Even if the deformed portion 233A enters water between the second wall portion 22A and the first wall portion by capillarity and reaches the upper end of the second wall portion 22A in the cutout portion 224, It is possible to prevent water from reaching the circuit board 30 placed at a height lower than the upper end of the two wall portions 22A. This is because water is guided toward the lower first bottom portion 21A at the deformable portion 233A located at a position lower than the circuit board contact portion 232A. According to this, it is possible to prevent the water that has entered the inside of the vehicle mounting casing from reaching the circuit board with a simple structure.
＜第二実施例の変形例＞
図７を参照して、本変形例に係る変形部２３３Ａ’を説明する。なお、上記実施例と異なる点を中心に述べる。本変形例では、上述した第二実施例と同じく、リブ２３Ａ’の上端２３１Ａ’の高さＨ２は、リブ２３Ａ’の近傍の第２壁部２２Ａ’の高さＨ１より低い。すなわち、回路基板３０がリブ２３Ａ’の上端２３１Ａ’に当接する回路基板当接部２３２Ａ’の第２底部２１Ａ’からの高さＨ２は、リブ２３Ａ’の近傍の第２壁部２２Ａ’の第２底部２１Ａ’からの高さＨ１より低い。
<Modification of the second embodiment>
With reference to FIG. 7, the deforming unit 233A ′ according to the present modification will be described. The points different from the above embodiment will be mainly described. In the present modification, as in the second embodiment described above, the height H2 of the upper end 231A ′ of the rib 23A ′ is lower than the height H1 of the second wall portion 22A ′ in the vicinity of the rib 23A ′. That is, the height H2 from the second bottom portion 21A ′ of the circuit board contact portion 232A ′ where the circuit board 30 contacts the upper end 231A ′ of the rib 23A ′ is the second height of the second wall portion 22A ′ in the vicinity of the rib 23A ′. 2 Lower than the height H1 from the bottom 21A ′.
上述した第二実施例と異なる点は、筐体本体２０Ａ’（第２筐体部材２０Ａ’）においては、リブ２３Ａ’は、回路基板当接部２３２Ａ’と第２壁部２２Ａ’の間に、リブ２３Ａ’の近傍の第２壁部２２Ａ’の高さＨ１より高い高さを有する変形部２３３Ａ’を有する点である。この変形部２３３Ａ’は、仮に、第２壁部２２Ａ’と第１壁部との間に毛細管現象により水が侵入し、水が切欠部２２４’における第２壁部２２Ａ’の上端に達したとしても、第２壁部２２Ａ’の上端より低い高さに載置された回路基板３０に水が到達することを防止することができる。水は、回路基板当接部２３２Ａ’よりも高い位置にある変形部２３３Ａ’の所で堰きとめられるからである。これによれば、車両搭載用筐体内部に侵入した水が回路基板に到達することを、簡単な構造で防止することができる。 The difference from the second embodiment described above is that, in the housing body 20A ′ (second housing member 20A ′), the rib 23A ′ is provided between the circuit board contact portion 232A ′ and the second wall portion 22A ′. In this case, the second wall portion 22A ′ in the vicinity of the rib 23A ′ has a deformed portion 233A ′ having a height higher than the height H1. The deformed portion 233A ′ temporarily enters water between the second wall portion 22A ′ and the first wall portion by capillary action, and the water reaches the upper end of the second wall portion 22A ′ at the notch portion 224 ′. However, it is possible to prevent water from reaching the circuit board 30 placed at a height lower than the upper end of the second wall portion 22A ′. This is because water is dammed up at the deformed portion 233A 'located higher than the circuit board contact portion 232A'. According to this, it is possible to prevent the water that has entered the inside of the vehicle mounting casing from reaching the circuit board with a simple structure.
なお、本発明は、例示した実施例に限定するものではなく、特許請求の範囲の各項に記載された内容から逸脱しない範囲の構成による実施が可能である。すなわち、本発明は、主に特定の実施形態に関して特に図示され、かつ説明されているが、本発明の技術的思想および目的の範囲から逸脱することなく、以上述べた実施形態に対し、数量、その他の詳細な構成において、当業者が様々な変形を加えることができるものである。 In addition, this invention is not limited to the illustrated Example, The implementation by the structure of the range which does not deviate from the content described in each item of a claim is possible. That is, although the present invention has been particularly illustrated and described with respect to particular embodiments, it should be understood that the present invention has been described in terms of quantity, quantity, and amount without departing from the scope and spirit of the present invention. In other detailed configurations, various modifications can be made by those skilled in the art.
１ 車両搭載用筐体（電気接続箱）
１０ 第１筐体部材（カバー）
１１ 第１底部
１２ 第１壁部
１２１ 被掛合部
１２２ 孔
２０ 第２筐体部材（筐体本体）
２１ 第２底部
２２ 第２壁部
２２１ 掛合部
２２４ 切欠部
２３ リブ
２３１ 上端
２３２ 回路基板当接部
２３３ 変形部
３０ 回路基板
Ｈ１ リブ近傍の第２壁部の高さ
Ｈ２ 回路基板当接部の高さ
ＷＴ 水
1 Vehicle-mounted housing (electric connection box)
10 First housing member (cover)
DESCRIPTION OF SYMBOLS 11 1st bottom part 12 1st wall part 121 Covered part 122 Hole 20 2nd housing | casing member (housing body)
21 2nd bottom part 22 2nd wall part 221 Engagement part 224 Notch part 23 Rib 231 Upper end 232 Circuit board contact part 233 Deformation part 30 Circuit board H1 Height of 2nd wall part near rib H2 Circuit board contact part height WT water
Claims (2)
第２底部と、該第２底部の周縁部に立設する第２壁部と、前記第２底部および前記第２壁部の両方に亘って設けられるリブと、を有する第２筐体部材と、
前記リブの上端に載置される回路基板と、
を備え、前記第２壁部が前記第１壁部の内側に嵌合する車両搭載用の筐体であって、
前記回路基板が前記リブの前記上端に当接する回路基板当接部の前記第２底部からの高さは、前記リブ近傍の前記第２壁部の前記第２底部からの高さと同じであり、
前記リブは、前記回路基板当接部と前記第２壁部の間に前記回路基板当接部の高さおよび前記リブ近傍の前記第２壁部の高さとは異なる高さを有する変形部を有する、
筐体。 A first housing member having a first bottom portion and a first wall portion standing on a peripheral edge portion of the first bottom portion;
A second housing member having a second bottom portion, a second wall portion erected on a peripheral edge portion of the second bottom portion, and a rib provided across both the second bottom portion and the second wall portion; ,
A circuit board placed on the upper end of the rib;
A vehicle-mounted housing in which the second wall portion fits inside the first wall portion,
The height from the second bottom of the circuit board contact portion where the circuit board contacts the upper end of the rib is the same as the height from the second bottom of the second wall near the rib,
The rib has a deformed portion having a height different from a height of the circuit board contact portion and a height of the second wall portion in the vicinity of the rib between the circuit board contact portion and the second wall portion. Have
Enclosure.
第２底部と、該第２底部の周縁部に立設する第２壁部と、前記第２底部および前記第２壁部の両方に亘って設けられるリブと、を有する第２筐体部材と、
前記リブの上端に載置される回路基板と、
を備え、前記第２壁部が前記第１壁部の内側に嵌合する車両搭載用の筐体であって、
前記回路基板が前記リブの前記上端に当接する回路基板当接部の前記第２底部からの高さは、前記リブ近傍の前記第２壁部の前記第２底部からの高さより低く、
前記リブは、前記回路基板当接部と前記第２壁部の間に、
前記回路基板当接部の高さより低い高さを有する変形部を有する、または、
前記リブ近傍の前記第２壁部の高さより高い高さを有する変形部を有する、
筐体。 A first housing member having a first bottom portion and a first wall portion standing on a peripheral edge portion of the first bottom portion;
A second housing member having a second bottom portion, a second wall portion erected on a peripheral edge portion of the second bottom portion, and a rib provided across both the second bottom portion and the second wall portion; ,
A circuit board placed on the upper end of the rib;
A vehicle-mounted housing in which the second wall portion fits inside the first wall portion,
The height from the second bottom of the circuit board contact portion where the circuit board contacts the upper end of the rib is lower than the height from the second bottom of the second wall near the rib,
The rib is between the circuit board contact portion and the second wall portion,
Having a deformed portion having a height lower than the height of the circuit board contact portion, or
Having a deformed portion having a height higher than the height of the second wall portion in the vicinity of the rib,
Enclosure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014163565A JP6109124B2 (en) | 2014-08-11 | 2014-08-11 | Housing for vehicle mounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014163565A JP6109124B2 (en) | 2014-08-11 | 2014-08-11 | Housing for vehicle mounting |
Publications (2)
| Publication Number | Publication Date |
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| JP5037235B2 (en) * | 2006-11-16 | 2012-09-26 | 株式会社オートネットワーク技術研究所 | Electrical junction box |
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