JP3923273B2 - Electrical junction box - Google Patents

Electrical junction box Download PDF

Info

Publication number
JP3923273B2
JP3923273B2 JP2001103826A JP2001103826A JP3923273B2 JP 3923273 B2 JP3923273 B2 JP 3923273B2 JP 2001103826 A JP2001103826 A JP 2001103826A JP 2001103826 A JP2001103826 A JP 2001103826A JP 3923273 B2 JP3923273 B2 JP 3923273B2
Authority
JP
Japan
Prior art keywords
wall
peripheral wall
junction box
heat generating
generating component
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.)
Expired - Fee Related
Application number
JP2001103826A
Other languages
Japanese (ja)
Other versions
JP2002305827A (en
Inventor
康仁 鈴木
佳彦 中浜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yazaki Corp
Original Assignee
Yazaki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yazaki Corp filed Critical Yazaki Corp
Priority to JP2001103826A priority Critical patent/JP3923273B2/en
Publication of JP2002305827A publication Critical patent/JP2002305827A/en
Application granted granted Critical
Publication of JP3923273B2 publication Critical patent/JP3923273B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Description

【0001】
【発明の属する技術分野】
本発明は、例えば、エンジンの燃料噴射,ABS等をコンピュータによって制御する電子コントロールユニット(ECU)等の非発熱部品とリレー,ヒュージブルリンク等の発熱部品をそれぞれ収容するようにした電気接続箱に関する。
【0002】
【従来の技術】
この種の電気接続箱として、図4〜図6に示す特開平10−23636号公報に開示されたものがある。この電気接続箱1は、図4に示すように、自動車のエンジンルーム9内に取り付けられている。
【0003】
図5,図6に示すように、電気接続箱1は、合成樹脂製で箱形の接続箱本体2と、この接続箱本体2の開口部2aを閉塞する下面側が開口した合成樹脂製の蓋体3と、接続箱本体2の周壁2bの内部に一体形成された箱形の隔壁2c内に収容される電子コントロールユニット4と、接続箱本体2の周壁2bと隔壁2cとの間に収容されるリレーボックス5及びヒュージブルリンクボックス6とを備えている。尚、接続箱本体2の周壁2bと隔壁2cに対応して蓋体3も周壁3bと隔壁3cの二重構造になっている。
【0004】
上記リレーボックス5及びヒュージブルリンクボックス6は図示しないリレーやヒュージブルリンクの発熱部品を内蔵した発熱性の電子部品であり、その熱は接続箱本体2の周壁2bに連通した吸気管7より導入されて排気管8に排出される車外の空気Aを介して外部へ放出されるようになっている。これにより、熱に弱い非発熱性の電子部品である電子コントロールユニット4が熱の影響を受けることがなく、電子コントロールユニット4の信頼性が保証される。
【0005】
尚、この電気接続箱1に関する類似技術は、特開平8−275335号公報等に開示されている。
【0006】
【発明が解決しようとする課題】
しかしながら、前記従来の電気接続箱1では、接続箱本体2の周壁2b内に電子コントロールユニット4を収容する隔壁2cを一体形成した二重構造になっているため、電子コントロールユニット4を外部の空気Aで効率的に冷却するために接続箱本体2の周壁2bに吸引管7と排気管8を接続しなければならず、全体の構造が複雑になった。
【0007】
また、図6に示すように、電子コントロールユニット4側への水の浸入を防ぐために隔壁2c内に仕切壁2dを形成しなければならないため、隔壁2c内に無駄なスペースが発生し、その分接続箱本体2の構造が複雑になると共に大型になった。
【0008】
そこで、本発明は、前記した課題を解決すべくなされたものであり、発熱部品収容室内で発生する熱を空気通路の空気層を介して確実に遮断することができ、非発熱部品収容室内の温度上昇を確実に防止することができる電気接続箱を提供することを目的とする。
【0009】
【課題を解決するための手段】
請求項1の発明は、接続箱本体に発熱性の電子部品を収容する発熱部品収容室と非発熱性の電子部品を収容する非発熱部品収容室とを周壁で仕切るようにそれぞれ形成した電気接続箱において、前記発熱部品収容室を形成する第1の周壁の外側に、前記非発熱部品収容室を形成する第2の周壁を該第1の周壁に対して所定の隙間をあけて並列に形成し、これら二重に並んだ第1及び第2の周壁と該第1及び第2の周壁を所定の隙間をあけて連結する連結壁との間に形成される空間を空気通路とし、この空気通路の両端側を外部にそれぞれ連通させ、かつ前記連結壁の両端側の部分にその内側の部分よりも外部に向かって低くなる傾斜部をそれぞれ形成したことを特徴とする。
【0010】
この電気接続箱では、発熱部品収容室の内部で発生する熱が空気通路の空気層を介して確実に遮断され、非発熱部品収容室の内部の温度上昇が確実に防止される。また、第1の周壁の外側に第2の周壁を形成するだけで済むので、全体の構造が簡素化されると共に、省スペース及び小型化が図られる。特に、連結壁の両端側の部分に形成された外部に向かって低くなる傾斜部により外側から空気通路側に水が入りにくくなり、連結壁の内側に水が溜まることがない。
【0013】
請求項の発明は、請求項記載の電気接続箱であって、前記連結壁内側の部分に複数の通気孔をそれぞれ形成したことを特徴とする。
【0014】
この電気接続箱では、連結壁の内側の部分に形成された複数の通気孔により発熱部品収容室の内部で発生する熱の放熱効率が向上する。
【0015】
【発明の実施の形態】
以下、本発明の一実施形態を図面に基づいて説明する。
【0016】
図1は本発明の一実施形態の電気接続箱を示す平面図、図2は図1中N−N線に沿う断面図、図3は同電気接続箱の要部の部分斜視図である。尚、図4に示す自動車のエンジンルーム9は援用する。
【0017】
図1及び図2に示すように、電気接続箱10は、合成樹脂製で箱形の接続箱本体11と、この接続箱本体11の上面側の開口部11aを閉塞する下面側が開口した合成樹脂製で略箱形の上蓋21と、接続箱本体11の底壁12側を閉塞する上面側が開口した合成樹脂製で略箱形の下蓋22とで大略構成されていて、自動車のエンジンルーム9内の所定位置に略水平に取り付けられている。
【0018】
図1〜図3に示すように、接続箱本体11の底壁12の周りには発熱部品収容室13を形成する第1の周壁14を該底壁12に対して垂直に起立するように一体突出形成してある。図1及び図2に示すように、第1の周壁14の長手方向の一側部の中央は内側にコ字状に凹むように形成されている。この第1の周壁14の凹状の壁部14aの外側には、非発熱部品収容室15を形成する第2の周壁16を四角筒状に一体突出形成してある。
【0019】
この第2の周壁16の外側壁部16aは第1の周壁14の長手方向の一側部と面一になるように連なっている。また、第2の周壁16の第1の周壁14の凹状の壁部14aに対向する内側壁部16bは該凹状の壁部14aに対して所定の隙間Lをあけて平行(並列)に形成してある。これら二重に並んだ第1の周壁14の凹状の壁部14aの中途部と第2の周壁16の内側壁部16bの中途部は連結壁17により所定の隙間Lをあけるように連結されている。そして、これら第1の周壁14の凹状の壁部14aと第2の周壁16の内側壁部16bと連結壁17との間に形成される空間が空気通路(通気路)18となっている。
【0020】
図1及び図3に示すように、空気通路18の両端18a,18a側は各周壁14,16の境界部分で開口して外部にそれぞれ連通している。また、空気通路18の底面(底壁)となる上記連結壁17の両端(17c,17c)側の部分はその内側の部分17aよりも低くなるようにそれぞれ形成してある。即ち、連結壁17の両端側の部分には外部に向かって低くなる傾斜部17bと水平部17cをそれぞれ形成してある。また、連結壁17の内側の部分17aの中央には仕切壁部17dを形成してあると共に、該仕切壁部17dの両側の連結壁17の内側の部分17aには複数の矩形の通気孔17eをそれぞれ形成してある。尚、連結壁17の傾斜部17bと水平部17cの各形状に沿うように第1の周壁14の凹状の壁部14aの上端及び第2の周壁16の内側壁部16bの上端の該傾斜部17bと水平部17cに対向する部分はそれそれ傾斜等している。
【0021】
そして、図2に示すように、接続箱本体11の発熱部品収容室13内の底壁12にはリレー(発熱性の電子部品)19を装着する複数のリレー装着部13aをそれぞれ形成してある。また、接続箱本体11の非発熱部品収容室15内にはエンジンの燃料噴射やABS等をコンピュータによって制御する非発熱性の電子部品としての電子コントロールユニット(ECU)20を収容して装着するようになっている。
【0022】
尚、図2に示すように、上蓋21の第1の周壁14の凹状の壁部14aと第2の周壁16の内側壁部16bに対向する位置には隔壁21b,21cをそれぞれ一体突出形成してある。また、上蓋21の周壁21aの下端側は接続箱本体11の各周壁14,16の上側に一体突出形成された凸部11bまで嵌合されるようになっている。この嵌合状態で、接続箱本体11に一体突出形成された係合部11c,11dに上蓋21の図示しない係止部が係止されるようになっていると共に、上蓋21の周壁21aの下端より空気通路18の両端18a,18aが上蓋21の周壁21aより露出して放熱用の開口になっている。また、下蓋22は接続箱本体11の下側に嵌合されるようになっている。この嵌合状態で、接続箱本体11に一体突出形成された複数の係合枠(係止部)11eに下蓋22の周壁22aに形成された係止爪(係止部)22eが係止されるようになっている。
【0023】
以上実施形態の電気接続箱10によれば、接続箱本体11の発熱部品収容室13を形成する第1の周壁14の凹状の壁部14aの外側に、所定の隙間Lをあけて第2の周壁16を形成して該第2の周壁16内を非発熱部品収容室15とし、これら第1の周壁14の凹状の壁部14a及び第2の周壁16の内側壁部16bと該各壁部14a,16bを連結する連結壁17との間に形成される空間を空気通路18とし、この空気通路18の両端18a,18a側を外部にそれぞれ連通させたことにより、発熱部品収容室13の内部に装着されたリレー19より発生する熱を空気通路18を介して外部に確実に放熱することができる。即ち、リレー19から発生する熱を空気通路18内の空気層により確実に遮断することができ、非発熱部品収容室15の内部の温度上昇を確実に防止することができる。これにより、非発熱部品収容室15内に収容された電子コントロールユニット20が熱の影響を受けることがなく、電子コントロールユニット20の信頼性を保証することができる。
【0024】
また、第1の周壁14の凹状の壁部14aの外側に所定の隙間Lをあけて第2の周壁16を形成するだけで済むので、全体の構造を簡素化することができる。さらに、第2の周壁16は第1の周壁14の凹状の壁部14a内に収容されて第1の周壁14の外周側から外に突出することがないため、電気接続箱10の小型化及び電気接続箱10をエンジンルーム9内に設置する際の省スペース化を図ることができる。
【0025】
また、図3に示すように、空気通路18の底壁(底面)となる連結壁17の両端17c,17c側の部分をその内側の部分17aよりも低くなるようにそれぞれ形成したので、連結壁17の内側に水が溜まるのを確実に防止することができる。即ち、連結壁17の両端17c,17c側の部分に外部に向かって低くなる傾斜部17bをそれぞれ形成すると共に、該連結壁17の内側の部分17aに複数の通気孔17eをそれぞれ形成したので、外側から空気通路18に水が入るのを傾斜部17bにより確実に防止することができると共に、複数の通気孔17eにより発熱部品収容室13の内部で発生する熱の放熱効率をより一段と向上させることができる。
【0026】
さらに、接続箱本体11の発熱部品収容室13を形成する第1の周壁14の凹状の壁部14aの外側に、所定の隙間Lをあけて第2の周壁16を形成して該第2の周壁16の内部を非発熱部品収容室15として電子コントロールユニット20を収容するようにしたので、非発熱部品収容室15の下方に電線(ワイヤハーネス)を配索等することにより熱の影響を受けない電線の配索及び電線の省線化(電線回路の短縮)が可能となる。
【0027】
尚、前記実施形態によれば、空気通路を平面コ字状に形成したが、接続箱本体を二分するように直線状等にしても良い。また、非発熱性の電子部品は電子コントロールユニット(ECU)に限られず、他の電子ユニットでも良いことは勿論である。
【0028】
【発明の効果】
以上説明したように、請求項1の発明によれば、発熱部品収容室を形成する第1の周壁の外側に所定の隙間をあけて第2の周壁を形成して非発熱部品収容室とし、これら第1及び第2の周壁と該各周壁を連結する連結壁との間に形成される空間を空気通路とし、この空気通路の両端側を外部にそれぞれ連通させたので、発熱部品収容室の内部で発生する熱を空気通路の空気層を介して確実に遮断することができ、非発熱部品収容室の内部の温度上昇を確実に防ぐことができる。また、第1の周壁の外側に所定の隙間をあけて第2の周壁を形成するだけで済むので、全体の構造を簡素化することができると共に、省スペース及び小型化を図ることができる。特に、空気通路の底面となる連結壁の両端側の部分にその内側の部分よりも外部に向かって低くなる傾斜部をそれぞれ形成したので、外側から空気通路に水が入るのを傾斜部により確実に防止することができ、連結壁の内側に水が溜まるのを防止することができる。
【0030】
請求項の発明によれば、連結壁の内側の部分に複数の通気孔をそれぞれ形成したので、複数の通気孔により発熱部品収容室の内部で発生する熱の放熱効率を向上させることができる。
【図面の簡単な説明】
【図1】本発明の一実施形態の電気接続箱を示す平面図である。
【図2】図1中N−N線に沿う断面図である。
【図3】上記電気接続箱の要部の部分斜視図である。
【図4】従来例の電気接続箱の取り付け状態を示す模式図である。
【図5】上記従来例の電気接続箱の分解斜視図である。
【図6】図5中M−M線に沿う断面図である。
【符号の説明】
10 電気接続箱
11 接続箱本体
13 発熱部品収容室
14 第1の周壁
15 非発熱部品収容室
16 第2の周壁
17 連結壁
17a 内側の部分
17b 傾斜部
17c 水平部(両端)
17e 通気孔
18 空気通路(通気路)
18a 両端
19 リレー(発熱性の電子部品)
20 電子コントロールユニット(非発熱性の電子部品)
L 所定の隙間
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical junction box that accommodates non-heat generating parts such as an electronic control unit (ECU) that controls engine fuel injection, ABS, and the like, and heat generating parts such as relays and fusible links, respectively. .
[0002]
[Prior art]
As this type of electrical junction box, there is one disclosed in Japanese Patent Application Laid-Open No. 10-23636 shown in FIGS. As shown in FIG. 4, the electrical junction box 1 is mounted in an engine room 9 of the automobile.
[0003]
As shown in FIG. 5 and FIG. 6, the electrical junction box 1 is made of a synthetic resin box-shaped junction box main body 2 and a synthetic resin lid having an open lower surface that closes the opening 2 a of the junction box main body 2. It is accommodated between the body 3, the electronic control unit 4 accommodated in the box-shaped partition wall 2 c integrally formed inside the peripheral wall 2 b of the connection box body 2, and the peripheral wall 2 b and the partition wall 2 c of the connection box body 2. Relay box 5 and fusible link box 6. The lid 3 has a double structure of the peripheral wall 3b and the partition wall 3c corresponding to the peripheral wall 2b and the partition wall 2c of the junction box body 2.
[0004]
The relay box 5 and the fusible link box 6 are heat-generating electronic parts that incorporate relay and fusible link heat generating parts (not shown), and the heat is introduced from the intake pipe 7 communicating with the peripheral wall 2b of the junction box body 2. The air is discharged to the outside through the air A outside the vehicle that is discharged to the exhaust pipe 8. Thereby, the electronic control unit 4 which is a non-heat-generating electronic component weak to heat is not affected by heat, and the reliability of the electronic control unit 4 is guaranteed.
[0005]
A similar technique relating to the electrical junction box 1 is disclosed in Japanese Patent Laid-Open No. 8-275335.
[0006]
[Problems to be solved by the invention]
However, since the conventional electric junction box 1 has a double structure in which the partition wall 2c for accommodating the electronic control unit 4 is integrally formed in the peripheral wall 2b of the junction box body 2, the electronic control unit 4 is connected to the outside air. In order to efficiently cool with A, the suction pipe 7 and the exhaust pipe 8 must be connected to the peripheral wall 2b of the junction box body 2, and the overall structure becomes complicated.
[0007]
In addition, as shown in FIG. 6, since the partition wall 2d must be formed in the partition wall 2c in order to prevent water from entering the electronic control unit 4, the useless space is generated in the partition wall 2c. The structure of the junction box body 2 has become complicated and large.
[0008]
Accordingly, the present invention has been made to solve the above-described problems, and can reliably block the heat generated in the heat generating component accommodation chamber through the air layer of the air passage, An object of the present invention is to provide an electrical junction box that can reliably prevent an increase in temperature.
[0009]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided an electrical connection in which a heat generating component storage chamber for storing a heat generating electronic component and a non heat generating component storage chamber for storing a non-heat generating electronic component are respectively separated by a peripheral wall in the junction box body. In the box, a second peripheral wall forming the non-heat generating component storage chamber is formed in parallel with a predetermined gap with respect to the first peripheral wall outside the first peripheral wall forming the heat generating component storage chamber. A space formed between the first and second peripheral walls arranged in a double line and a connecting wall that connects the first and second peripheral walls with a predetermined gap is defined as an air passage. Both end sides of the passage are communicated with the outside, and inclined portions that are lower toward the outside than the inner portions are formed in the both end sides of the connecting wall .
[0010]
In this electrical junction box, the heat generated inside the heat generating component housing chamber is reliably cut off via the air layer of the air passage, and the temperature rise inside the non-heat generating component housing chamber is reliably prevented. Moreover, since it is only necessary to form the second peripheral wall outside the first peripheral wall, the entire structure is simplified, and space saving and miniaturization are achieved. In particular, it is difficult for water to enter the air passage side from the outside due to the inclined portions formed at the both ends of the connecting wall and becoming lower toward the outside, so that water does not accumulate inside the connecting wall.
[0013]
A second aspect of the present invention, an electrical connection box according to claim 1, characterized in that a plurality of vent holes on the inner side portion of the connecting wall were formed.
[0014]
In the electrical connection box, the heat dissipation efficiency of the heat can be improved generated inside the plurality of vent holes by the heat generating component housing chamber formed inside the portion of the communication Yuikabe.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0016]
1 is a plan view showing an electrical junction box according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line NN in FIG. 1, and FIG. 3 is a partial perspective view of a main part of the electrical junction box. In addition, the engine room 9 of the motor vehicle shown in FIG. 4 is used.
[0017]
As shown in FIGS. 1 and 2, the electrical junction box 10 is made of a synthetic resin, a box-shaped junction box main body 11, and a synthetic resin having a lower surface side that closes an opening 11 a on the upper surface side of the junction box main body 11. A substantially box-shaped upper lid 21 and a synthetic resin-made substantially box-shaped lower lid 22 which is open on the upper surface side closing the bottom wall 12 side of the connection box main body 11, and is composed roughly of an engine room 9 of an automobile. It is attached substantially horizontally at a predetermined position.
[0018]
As shown in FIGS. 1 to 3, a first peripheral wall 14 forming a heat generating component housing chamber 13 is integrally formed around the bottom wall 12 of the junction box body 11 so as to stand vertically with respect to the bottom wall 12. Protrusions are formed. As shown in FIG.1 and FIG.2, the center of the one side part of the longitudinal direction of the 1st surrounding wall 14 is formed so that it may dent inside U shape. On the outer side of the concave wall portion 14a of the first peripheral wall 14, a second peripheral wall 16 that forms the non-heat generating component housing chamber 15 is integrally formed in a rectangular tube shape.
[0019]
The outer wall 16a of the second peripheral wall 16 is continuous with one side of the first peripheral wall 14 in the longitudinal direction. Further, the inner wall 16b of the second peripheral wall 16 facing the concave wall 14a of the first peripheral wall 14 is formed in parallel (parallel) with a predetermined gap L with respect to the concave wall 14a. It is. The middle portion of the concave wall portion 14a of the first peripheral wall 14 and the middle portion of the inner wall portion 16b of the second peripheral wall 16 are connected by the connecting wall 17 so as to form a predetermined gap L. Yes. A space formed between the concave wall portion 14 a of the first peripheral wall 14, the inner wall portion 16 b of the second peripheral wall 16, and the connecting wall 17 is an air passage (ventilation passage) 18.
[0020]
As shown in FIGS. 1 and 3, both ends 18 a and 18 a of the air passage 18 are opened at the boundary portions of the peripheral walls 14 and 16 and communicate with the outside. Further, the portions on both ends (17c, 17c) side of the connecting wall 17 serving as the bottom surface (bottom wall) of the air passage 18 are formed so as to be lower than the inner portion 17a. That is, an inclined portion 17b and a horizontal portion 17c that are lowered toward the outside are formed on both ends of the connecting wall 17, respectively. A partition wall portion 17d is formed at the center of the inner portion 17a of the connecting wall 17, and a plurality of rectangular ventilation holes 17e are formed in the inner portions 17a of the connecting wall 17 on both sides of the partition wall portion 17d. Are formed respectively. The inclined portions of the upper end of the concave wall portion 14a of the first peripheral wall 14 and the upper end of the inner wall portion 16b of the second peripheral wall 16 so as to follow the shapes of the inclined portion 17b and the horizontal portion 17c of the connecting wall 17. The portions facing 17b and the horizontal portion 17c are each inclined.
[0021]
As shown in FIG. 2, a plurality of relay mounting portions 13a for mounting relays (heat generating electronic components) 19 are formed on the bottom wall 12 in the heat generating component housing chamber 13 of the junction box body 11, respectively. . Further, an electronic control unit (ECU) 20 as a non-heat-generating electronic component that controls engine fuel injection, ABS, and the like by a computer is housed and mounted in the non-heat-generating component storage chamber 15 of the junction box body 11. It has become.
[0022]
In addition, as shown in FIG. 2, partition walls 21b and 21c are integrally formed at positions facing the concave wall portion 14a of the first peripheral wall 14 of the upper lid 21 and the inner wall portion 16b of the second peripheral wall 16, respectively. It is. Further, the lower end side of the peripheral wall 21 a of the upper lid 21 is fitted to the convex portion 11 b formed integrally protruding above the peripheral walls 14 and 16 of the junction box body 11. In this fitted state, a locking portion (not shown) of the upper lid 21 is locked to the engaging portions 11c and 11d formed integrally with the connection box body 11, and the lower end of the peripheral wall 21a of the upper lid 21 is locked. Further, both ends 18a, 18a of the air passage 18 are exposed from the peripheral wall 21a of the upper lid 21 and are openings for heat dissipation. The lower lid 22 is fitted to the lower side of the junction box main body 11. In this fitted state, locking claws (locking portions) 22e formed on the peripheral wall 22a of the lower lid 22 are locked to a plurality of engagement frames (locking portions) 11e formed integrally protruding on the connection box body 11. It has come to be.
[0023]
According to the electrical junction box 10 of the above embodiment, the second gap is formed outside the concave wall portion 14a of the first peripheral wall 14 forming the heat generating component housing chamber 13 of the junction box body 11 with a predetermined gap L therebetween. A peripheral wall 16 is formed, and the inside of the second peripheral wall 16 serves as a non-heat-generating component housing chamber 15. The concave wall portion 14 a of the first peripheral wall 14, the inner wall portion 16 b of the second peripheral wall 16, and the respective wall portions. The space formed between the connecting wall 17 connecting 14a and 16b is defined as an air passage 18, and both ends 18a and 18a of the air passage 18 are communicated to the outside, respectively. The heat generated from the relay 19 attached to can be reliably radiated to the outside through the air passage 18. That is, the heat generated from the relay 19 can be reliably blocked by the air layer in the air passage 18, and the temperature rise in the non-heat generating component housing chamber 15 can be reliably prevented. Thereby, the electronic control unit 20 accommodated in the non-heat-generating component storage chamber 15 is not affected by heat, and the reliability of the electronic control unit 20 can be guaranteed.
[0024]
Moreover, since it is only necessary to form the second peripheral wall 16 with a predetermined gap L outside the concave wall portion 14a of the first peripheral wall 14, the entire structure can be simplified. Further, since the second peripheral wall 16 is accommodated in the concave wall portion 14a of the first peripheral wall 14 and does not protrude outward from the outer peripheral side of the first peripheral wall 14, the electrical connection box 10 can be reduced in size and Space saving can be achieved when the electrical junction box 10 is installed in the engine room 9.
[0025]
Further, as shown in FIG. 3, since both end portions 17c and 17c side portions of the connecting wall 17 serving as the bottom wall (bottom surface) of the air passage 18 are formed to be lower than the inner portion 17a, the connecting wall It is possible to reliably prevent water from being accumulated inside 17. That is, since the inclined portions 17b which are lowered toward the outside are formed on the both ends 17c and 17c side portions of the connecting wall 17, and the plurality of vent holes 17e are formed in the inner portion 17a of the connecting wall 17, Water can be reliably prevented from entering the air passage 18 from the outside by the inclined portion 17b, and the heat dissipation efficiency of the heat generated inside the heat generating component housing chamber 13 can be further improved by the plurality of vent holes 17e. Can do.
[0026]
Further, the second peripheral wall 16 is formed outside the concave wall portion 14a of the first peripheral wall 14 forming the heat generating component housing chamber 13 of the junction box body 11 with a predetermined gap L therebetween. Since the electronic control unit 20 is accommodated inside the peripheral wall 16 as the non-heat-generating component storage chamber 15, an electric wire (wire harness) is routed below the non-heat-generating component storage chamber 15 to be affected by heat. This makes it possible to route no wires and save wires (shortening the wire circuit).
[0027]
In addition, according to the said embodiment, although the air passage was formed in planar U shape, you may make it linear form etc. so that a junction box main body may be divided into two. Of course, the non-heat-generating electronic component is not limited to the electronic control unit (ECU), and may be another electronic unit.
[0028]
【The invention's effect】
As described above, according to the first aspect of the present invention, the second peripheral wall is formed with a predetermined gap outside the first peripheral wall forming the heat generating component storage chamber to form a non-heat generating component storage chamber. Since the space formed between the first and second peripheral walls and the connecting wall that connects the peripheral walls is an air passage, and both ends of the air passage are communicated to the outside, The heat generated inside can be surely blocked through the air layer of the air passage, and the temperature rise inside the non-heat generating component housing chamber can be surely prevented. Further, since it is only necessary to form the second peripheral wall with a predetermined gap outside the first peripheral wall, the entire structure can be simplified, and space saving and miniaturization can be achieved. In particular, the inclined portions that are lower toward the outside than the inner portions are formed on both ends of the connecting wall, which is the bottom surface of the air passage, so that it is ensured that water enters the air passage from the outside. It is possible to prevent water from accumulating inside the connecting wall.
[0030]
According to the invention of claim 2, a plurality of vent holes than were formed on the inner side of the portion of the connecting wall, to improve the heat radiation efficiency of heat generated in the heat generating component housing chamber by multiple vents be able to.
[Brief description of the drawings]
FIG. 1 is a plan view showing an electrical junction box according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line NN in FIG.
FIG. 3 is a partial perspective view of a main part of the electrical junction box.
FIG. 4 is a schematic diagram showing a mounting state of a conventional electric junction box.
FIG. 5 is an exploded perspective view of the conventional electrical junction box.
6 is a cross-sectional view taken along line MM in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Electrical junction box 11 Junction box main body 13 Heat generating component accommodating chamber 14 1st surrounding wall 15 Non-heating component accommodating chamber 16 2nd surrounding wall 17 Connection wall 17a Inner part 17b Inclined part 17c Horizontal part (both ends)
17e Ventilation hole 18 Air passage (air passage)
18a Both ends 19 relay (heat generating electronic parts)
20 Electronic control unit (non-heat-generating electronic parts)
L Predetermined gap

Claims (2)

接続箱本体に発熱性の電子部品を収容する発熱部品収容室と非発熱性の電子部品を収容する非発熱部品収容室とを周壁で仕切るようにそれぞれ形成した電気接続箱において、
前記発熱部品収容室を形成する第1の周壁の外側に、前記非発熱部品収容室を形成する第2の周壁を該第1の周壁に対して所定の隙間をあけて並列に形成し、これら二重に並んだ第1及び第2の周壁と該第1及び第2の周壁を所定の隙間をあけて連結する連結壁との間に形成される空間を空気通路とし、この空気通路の両端側を外部にそれぞれ連通させ、かつ前記連結壁の両端側の部分にその内側の部分よりも外部に向かって低くなる傾斜部をそれぞれ形成したことを特徴とする電気接続箱。
In the electrical junction box formed so as to partition the heat generating component storage chamber for storing the heat generating electronic components and the non heat generating component storage chamber for storing the non-heat generating electronic components in the connection box main body, respectively,
The second peripheral wall forming the non-heat generating component storage chamber is formed outside the first peripheral wall forming the heat generating component storage chamber in parallel with a predetermined gap with respect to the first peripheral wall. A space formed between the first and second peripheral walls that are doubled and a connecting wall that connects the first and second peripheral walls with a predetermined gap is defined as an air passage, and both ends of the air passage An electrical connection box characterized in that the sides are communicated with the outside, and inclined portions that are lower toward the outside than the inside portions are formed at the both ends of the connecting wall .
請求項記載の電気接続箱であって、
前記連結壁内側の部分に複数の通気孔をそれぞれ形成したことを特徴とする電気接続箱。
The electrical junction box according to claim 1 ,
Electrical connection box, characterized in that to form each a plurality of vent holes on the inner side portion of the connecting wall.
JP2001103826A 2001-04-02 2001-04-02 Electrical junction box Expired - Fee Related JP3923273B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001103826A JP3923273B2 (en) 2001-04-02 2001-04-02 Electrical junction box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001103826A JP3923273B2 (en) 2001-04-02 2001-04-02 Electrical junction box

Publications (2)

Publication Number Publication Date
JP2002305827A JP2002305827A (en) 2002-10-18
JP3923273B2 true JP3923273B2 (en) 2007-05-30

Family

ID=18956824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001103826A Expired - Fee Related JP3923273B2 (en) 2001-04-02 2001-04-02 Electrical junction box

Country Status (1)

Country Link
JP (1) JP3923273B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004260959A (en) * 2003-02-27 2004-09-16 Yazaki Corp Waterproof structure of electric connection box
JP4139258B2 (en) * 2003-04-04 2008-08-27 矢崎総業株式会社 Shutter structure in the shell
JP2005047352A (en) * 2003-07-28 2005-02-24 Shin Meiwa Ind Co Ltd Fuse of power supply wiring in special vehicle
JP5005462B2 (en) 2007-08-01 2012-08-22 株式会社オートネットワーク技術研究所 Electrical junction box
JP5885392B2 (en) * 2011-03-25 2016-03-15 矢崎総業株式会社 Electrical junction box
JP6819569B2 (en) 2017-12-28 2021-01-27 株式会社オートネットワーク技術研究所 Electrical junction box

Also Published As

Publication number Publication date
JP2002305827A (en) 2002-10-18

Similar Documents

Publication Publication Date Title
JP3052843B2 (en) Electrical junction box
JP4176005B2 (en) Waterproof structure of electrical junction box
JP4885693B2 (en) Electrical junction box
JP6012420B2 (en) Electrical junction box
JP3470545B2 (en) Electronic control unit storage box
JP4180248B2 (en) Electrical junction box
US7616439B2 (en) Electric connection box
JP3923273B2 (en) Electrical junction box
US5789704A (en) Container with heat removing features for containing an electronic contol unit
JP2007312539A (en) Electrical junction box
JP5515756B2 (en) Power converter
US6052283A (en) Storage units
JP5044247B2 (en) Electrical junction box
JP2017175854A (en) Electronic control device
JP2017171219A (en) Electronic control device
JP3754238B2 (en) Electronic unit box
JPH0566218U (en) Electronic control unit mounting structure
JPH08275335A (en) Electric connection box
JP2017171220A (en) Electronic control device
JP4669328B2 (en) Electrical junction box
JP4560460B2 (en) Electrical junction box
JPH0974641A (en) Electronic control unit housing box
JP6996986B2 (en) Housing and electrical junction box
JP4681976B2 (en) Electrical junction box
JP3700454B2 (en) Electrical junction box for housing electrical components in vehicles

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040924

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060704

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060808

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070213

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070221

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 3923273

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100302

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110302

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110302

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120302

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120302

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130302

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140302

Year of fee payment: 7

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees