JPH0756566Y2 - Electrical junction box - Google Patents
Electrical junction boxInfo
- Publication number
- JPH0756566Y2 JPH0756566Y2 JP1987059856U JP5985687U JPH0756566Y2 JP H0756566 Y2 JPH0756566 Y2 JP H0756566Y2 JP 1987059856 U JP1987059856 U JP 1987059856U JP 5985687 U JP5985687 U JP 5985687U JP H0756566 Y2 JPH0756566 Y2 JP H0756566Y2
- Authority
- JP
- Japan
- Prior art keywords
- front cover
- circuit board
- peripheral edge
- junction box
- bus bar
- 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 - Lifetime
Links
Landscapes
- Connection Or Junction Boxes (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、自動車などの電気配線に使用する電気接続箱
に関し、詳しくは、洗浄水などの加圧水が電気接続箱の
内部に浸入し、ブスバー回路板にリーク電流を発生する
ことを防止する電気接続箱に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an electric connection box used for electric wiring of an automobile or the like, and more specifically, pressurized water such as washing water penetrates into the electric connection box, The present invention relates to an electric connection box that prevents a leak current from being generated in a circuit board.
ジャンクションボックスやリレーボックスなどの電気接
続箱は、一般に第４図に示すような構造になっている。Electrical junction boxes such as junction boxes and relay boxes generally have a structure as shown in FIG.
同図において、１は表裏両面にブスバー回路２を配設し
たブスバー回路板で、３はリレー等を接続するコネクタ
ハウジング４を設けた表カバーである。In the figure, 1 is a busbar circuit board having busbar circuits 2 arranged on both front and back surfaces, and 3 is a front cover provided with a connector housing 4 for connecting a relay or the like.
ブスバー回路板１は通常多段に積層され、各層のブスバ
ー回路板１のブスバー回路２よりタブ端子５がほぼ直角
に屈曲し、最上層のブスバー回路板１の上方に、或い
は、最下層のブスバー回路板１の下方に突出する。The bus bar circuit boards 1 are usually stacked in multiple stages, and the tab terminals 5 are bent substantially at right angles from the bus bar circuits 2 of the bus bar circuit boards 1 of the respective layers, and the bus bar circuit boards 1 of the uppermost layer or the bus bar circuit of the lowermost layer are stacked. It projects below the plate 1.
ブスバー回路板１の上に重ね合わされる表カバー３にコ
ネクタハウジング４が設けられ、コネクタハウジング４
の内部に挿入された雌−雌中継端子８には上方に突出す
るタブ端子５が嵌合し（第５図参照）、箱本体６の底壁
6bに設けられたコネクタハウジング17の内部に雌端子
（図示しない）には、下方に突出するタブ端子５が嵌合
する。The connector housing 4 is provided on the front cover 3 which is superposed on the bus bar circuit board 1.
The tab terminal 5 protruding upward is fitted to the female-female relay terminal 8 inserted into the inside of the box (see FIG. 5), and the bottom wall of the box body 6 is fitted.
A tab terminal 5 protruding downward is fitted to a female terminal (not shown) inside the connector housing 17 provided in 6b.
表カバー３及び各層のブスバー回路板１は、箱本体６の
中に収容され、箱本体６の上部開口に防水カバー７が組
付けられる。The front cover 3 and the bus bar circuit board 1 of each layer are housed in the box body 6, and the waterproof cover 7 is attached to the upper opening of the box body 6.
表カバー３の周縁より下方に屈曲する周縁部3aが設けら
れ、周縁部3aと箱本体６の側壁6a内面との間に隙間９が
形成されているので、電気接続箱の内部に浸入し表カバ
ー３の上に落下した水が、隙間９を通過し、箱本体６の
底壁6bの隅に設けられた排水孔10より電気接続箱の外に
排出される。Since a peripheral edge portion 3a that bends downward from the peripheral edge of the front cover 3 is provided and a gap 9 is formed between the peripheral edge portion 3a and the inner surface of the side wall 6a of the box body 6, it is possible to penetrate the inside of the electrical connection box and The water that has dropped onto the cover 3 passes through the gap 9 and is discharged to the outside of the electrical junction box through the drain holes 10 provided at the corners of the bottom wall 6b of the box body 6.
しかしながら、自動車を加圧水で洗浄する場合には、加
圧水が電気接続箱に激しく当たり、第６図に示すよう
に、矢印11方向から隙間９に浸入した加圧水が底壁6bに
衝突して飛散し、表カバー３の周縁部3aとブスバー回路
板１との間を上昇して表カバー３と最上層のブスバー回
路2Aとの隙間に浸入することがあり、ブスバー回路2A上
に滞留した水滴Ｇがブスバー回路2Aにリーク電流を発生
させる原因となる（第６図参照）。However, when the automobile is washed with pressurized water, the pressurized water hits the electric junction box violently, and as shown in FIG. 6, the pressurized water that has entered the gap 9 from the direction of arrow 11 collides with the bottom wall 6b and scatters. The space between the peripheral edge portion 3a of the front cover 3 and the busbar circuit board 1 may rise and enter the gap between the front cover 3 and the busbar circuit 2A of the uppermost layer, and the water droplet G that has accumulated on the busbar circuit 2A may get into the busbar. This causes a leak current in the circuit 2A (see FIG. 6).
しかも、一旦この隙間に浸入してブスバー回路2A上に滞
留した水滴Ｇは、小さい隙間に挟まれているので排除が
極めて困難である。Moreover, the water droplet G that once entered the gap and stayed on the bus bar circuit 2A is very difficult to remove because it is sandwiched by the small gap.
本考案はかかる問題点を解決することを目的としたもの
であり、加圧水が箱本体６に浸入して底壁6bに衝突して
飛散しても、表カバー３とブスバー回路2Aとの隙間に浸
入することを防止する電気接続箱を提供するものであ
る。The present invention is intended to solve such a problem, and even if the pressurized water enters the box body 6 and collides with the bottom wall 6b and scatters, the gap between the front cover 3 and the bus bar circuit 2A remains unchanged. It is intended to provide an electric junction box that prevents intrusion.
上記目的を達成するために、本考案は、 ブスバー回路板などの配線板と、該配線板上に重合する
表カバーが箱本体の内部に収容され、上記表カバー及び
配線板の外周縁と上記箱本体の内壁面との間に圧力水な
どが通過可能な空間が形成される電気接続箱において、 上記表カバーに、外周縁より下方に延びる周縁部を周設
し、上記ブスバー回路板の周縁に周壁を立設し、 上記ブスバー回路板の上に上記表カバーを載置したとき
に、上記周壁の上端縁が上記表カバーの下面に当接して
上記表カバーと上記ブスバー回路板との隙間を遮蔽する
と共に、上記周縁部が遮蔽された上記隙間を包囲するこ
とを特徴とするものである。In order to achieve the above object, the present invention provides a wiring board such as a bus bar circuit board and a front cover that is superposed on the wiring board inside a box body. In an electrical junction box in which a space through which pressurized water and the like can pass is formed between the inner wall surface of the box body, a peripheral edge portion extending downward from an outer peripheral edge is provided around the front cover, and a peripheral edge of the bus bar circuit board is provided. When the front cover is placed on the bus bar circuit board, the upper edge of the peripheral wall abuts the lower surface of the front cover and the clearance between the front cover and the bus bar circuit board is increased. And surrounding the gap in which the peripheral edge is shielded.
上記表カバーの下面に、上記周壁の上端が当接する凹溝
を設けるとよい。A concave groove with which the upper end of the peripheral wall abuts may be provided on the lower surface of the front cover.
洗車時に、加圧水が電気接続箱の中に浸入して電気接続
箱の箱本体の底壁に激しく衝突し、反射する。During car washing, pressurized water penetrates into the electrical junction box and violently collides with the bottom wall of the box body of the electrical junction box and is reflected.
反射した水滴のうち、表カバーの周縁部と箱本体との隙
間に向かって飛散する水滴は表カバーの周縁部によって
遮断され、周縁部より内側には浸入できない。Among the reflected water droplets, the water droplets scattered toward the gap between the peripheral edge portion of the front cover and the box body are blocked by the peripheral edge portion of the front cover and cannot enter inside the peripheral edge portion.
反射した水滴のうち、直接に表カバーの下面に衝突する
水滴は、ブスバー回路板の周壁によって遮断される。Among the reflected water droplets, the water droplets that directly collide with the lower surface of the front cover are blocked by the peripheral wall of the bus bar circuit board.
従って、ブスバー最上層は、表カバーの周縁部とブスバ
ー回路板の周壁によって水滴の浸入が二重に防止され、
箱本体の底壁より電気接続箱の外に排出される。Therefore, in the top layer of the busbar, the perimeter of the front cover and the peripheral wall of the busbar circuit board prevent double penetration of water droplets,
It is discharged from the bottom wall of the box body to the outside of the electrical junction box.
本考案の実施例を図面を参照しながら説明すると、第１
図は電気接続箱の要部を示す縦断面図であり、第２図は
ブスバー回路板の斜視図である。An embodiment of the present invention will be described with reference to the drawings.
The drawing is a vertical cross-sectional view showing the main part of the electrical junction box, and FIG. 2 is a perspective view of the bus bar circuit board.
なお、従来例と同一部品には同一符号を付してその詳細
説明を省略する。The same parts as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.
第１図及び第２図に示すように、ブスバー回路板１の上
面の周縁部に、上方に突出する周壁13を立設し、この周
壁13によって表カバー３とブスバー回路板１との隙間を
遮蔽し、ブスバー回路2Aを保護する。As shown in FIG. 1 and FIG. 2, a peripheral wall 13 projecting upward is provided upright on the peripheral edge of the upper surface of the bus bar circuit board 1, and this peripheral wall 13 forms a gap between the front cover 3 and the bus bar circuit board 1. Shield and protect busbar circuit 2A.
又、ブスバー回路板１の下面の周縁部にも下方に突出す
る周壁13を立設し、ブスバー回路板１の下面のブスバー
回路2Bをも保護する。Further, a peripheral wall 13 protruding downward is also provided upright on the peripheral portion of the lower surface of the busbar circuit board 1 to protect the busbar circuit 2B on the lower surface of the busbar circuit board 1.
上部に突出する周壁13には、全周囲の複数箇所に開口14
を設け、表カバーのコネクタハウジング４の端子挿入孔
から浸入した水を開口14から排除する。The peripheral wall 13 protruding upward has openings 14 at multiple locations around the entire circumference.
Is provided, and water that has entered through the terminal insertion hole of the connector housing 4 of the front cover is removed from the opening 14.
然し、周壁13の外から開口14を経由して水滴が浸入する
のを防止するために、開口14の面積は排水に必要な最小
限の面積とすることが望ましい。However, in order to prevent water droplets from entering from the outside of the peripheral wall 13 through the opening 14, it is desirable that the area of the opening 14 be the minimum area necessary for drainage.
最上層のブスバー回路板１の上に表カバー３を載置した
ときに、周壁13の上端が表カバー３の下面に接触し、表
カバー３と最上層のブスバー回路板１との隙間12を密閉
すると共に、表カバー３の周縁部3aがこの隙間12を包囲
する。When the front cover 3 is placed on the uppermost busbar circuit board 1, the upper end of the peripheral wall 13 comes into contact with the lower surface of the front cover 3, and the gap 12 between the front cover 3 and the uppermost busbar circuit board 1 is formed. While hermetically sealing, the peripheral edge portion 3a of the front cover 3 surrounds the gap 12.
この密閉効果を高めるために、第３図に示すように、表
カバー３の下面に、周壁13の上端部が挿入される凹溝15
を設け、凹溝15の底面に周壁13の上端を接触させるよう
にすることが望ましい。In order to enhance this sealing effect, as shown in FIG. 3, a concave groove 15 into which the upper end of the peripheral wall 13 is inserted is formed on the lower surface of the front cover 3.
It is desirable that the bottom end of the peripheral wall 13 is brought into contact with the bottom surface of the groove 15.
次に、以上のように構成された電気接続箱の作用を説明
する。Next, the operation of the electrical junction box configured as described above will be described.
洗車時に一部の加圧水が電気接続箱の中に浸入し、箱本
体６の底壁6bに激しく衝突して反射し、反射した水滴の
うち、表カバー３の周縁部3aと箱本体６の側壁6aの内面
との隙間に向かって飛散する水滴は、表カバー３の周縁
部3aによって遮断される。At the time of car washing, a part of the pressurized water penetrates into the electric connection box, collides violently with the bottom wall 6b of the box body 6 and is reflected, and among the reflected water droplets, the peripheral edge portion 3a of the front cover 3 and the side wall of the box body 6 Water droplets scattered toward the gap with the inner surface of 6a are blocked by the peripheral edge portion 3a of the front cover 3.
反射した水滴のうち、直接に表カバー３の下面に衝突す
る水滴は、ブスバー回路板１の周壁13に当たるが、周壁
13によって遮断される。Among the reflected water droplets, the water droplets that directly collide with the lower surface of the front cover 3 hit the peripheral wall 13 of the bus bar circuit board 1, but the peripheral wall
Blocked by 13.
従って、加圧水は、表カバー３の周縁部3aとブスバー回
路板１の周壁13によって隙間12への浸入が二重に阻止さ
れ、箱本体６の底壁6bに落下し、電気接続箱の外に排出
される。Therefore, the pressurized water is doubly prevented from entering the gap 12 by the peripheral edge portion 3a of the front cover 3 and the peripheral wall 13 of the bus bar circuit board 1, and falls into the bottom wall 6b of the box body 6 to the outside of the electrical junction box. Is discharged.
かくして、水滴が隙間12に浸入して最上層のブスバー回
路板１の上に滞留することが防止される。Thus, it is possible to prevent water droplets from penetrating into the gap 12 and staying on the uppermost bus bar circuit board 1.
本考案は以上のように構成されているので、電気接続箱
の底壁に衝突して跳ね返った水滴は、表カバーの周縁部
とブスバー回路板の周壁によって、隙間12への浸入が二
重に防止される。Since the present invention is configured as described above, water droplets that have collided and bounced off the bottom wall of the electrical junction box doubly enter the gap 12 due to the peripheral edge of the front cover and the peripheral wall of the busbar circuit board. To be prevented.
この表カバーの周縁部は表カバーの製作段階で一体的に
製作され、ブスバー回路板の周壁はブスバー回路板の製
作段階で一体的に製作されるので、従来の電気接続箱に
比較して製造費はほとんど上昇しない。The peripheral part of the front cover is integrally manufactured at the manufacturing stage of the front cover, and the peripheral wall of the busbar circuit board is integrally manufactured at the manufacturing stage of the busbar circuit board. The cost hardly rises.
又、ブスバー回路板の周壁と表カバーの下面の平面度さ
え確保しておけば、ブスバー回路板の上に表カバーを載
置するだけで両者は隙間なく接触し、水密に保たれる。Further, if the flatness of the peripheral wall of the busbar circuit board and the lower surface of the front cover is secured, the front cover is placed on the busbar circuit board and both are in contact with each other without a gap, and are kept watertight.
従って、接触面を精密な嵌合寸法に加工し、無理な圧入
嵌合をする必要がなく、組立作業が困難になることはな
い。Therefore, it is not necessary to process the contact surface into a precise fitting dimension and force-fit the fitting, and the assembling work will not be difficult.
また、表カバーの周縁部によって水滴の浸入が更に防止
される。In addition, the perimeter of the front cover further prevents water droplets from entering.
第１図は本考案の電気接続箱の要部縦断面図、 第２図はブスバー回路板の斜視図、 第３図は本考案の他の実施例を示す電気接続箱の要部縦
断面図、 第４図は電気接続箱の分解斜視図、 第５図は電気接続箱の従来例を示す縦断面図、 第６図は第５図の部分拡大図である。 １…ブスバー回路板、2,2A,2B…ブスバー回路、３…表
カバー、3a…周縁部、６…箱本体、6b…底壁、９…隙
間、12…隙間、13…周壁、15…凹溝。1 is a longitudinal sectional view of an essential part of an electric junction box of the present invention, FIG. 2 is a perspective view of a bus bar circuit board, and FIG. 3 is a longitudinal sectional view of an essential part of an electric junction box showing another embodiment of the present invention. 4 is an exploded perspective view of the electric junction box, FIG. 5 is a longitudinal sectional view showing a conventional example of the electric junction box, and FIG. 6 is a partially enlarged view of FIG. 1 ... Busbar circuit board, 2, 2A, 2B ... Busbar circuit, 3 ... Front cover, 3a ... Edge part, 6 ... Box body, 6b ... Bottom wall, 9 ... Gap, 12 ... Gap, 13 ... Peripheral wall, 15 ... Concave groove.
Claims (2)
上に重合する表カバーが箱本体の内部に収容され、上記
表カバー及び配線板の外周縁と上記箱本体の内壁面との
間に圧力水などが通過可能な空間が形成される電気接続
箱において、 上記表カバーに、外周縁より下方に延びる周縁部を周設
し、上記ブスバー回路板の周縁に周壁を立設し、 上記ブスバー回路板の上に上記表カバーを載置したとき
に、上記周壁の上端縁が上記表カバーの下面に当接して
上記表カバーと上記ブスバー回路板との隙間を遮蔽する
と共に、上記周縁部が遮蔽された上記隙間を包囲するこ
とを特徴とする電気接続箱。1. A wiring board such as a bus bar circuit board and a front cover that overlaps with the wiring board are housed inside a box body, and the outer peripheral edges of the front cover and the wiring board and the inner wall surface of the box body are combined. In an electrical connection box in which a space through which pressurized water and the like can pass is formed, the front cover is provided with a peripheral edge portion extending downward from an outer peripheral edge, and a peripheral wall is provided upright on the peripheral edge of the busbar circuit board, When the front cover is placed on the busbar circuit board, the upper edge of the peripheral wall abuts the lower surface of the front cover to shield the gap between the front cover and the busbar circuit board, and the peripheral edge. An electric junction box characterized in that it encloses the above-mentioned gap whose part is shielded.
当接する凹溝が設けられることを特徴とする請求項１記
載の電気接続箱。2. The electric junction box according to claim 1, wherein a concave groove with which the upper end of the peripheral wall abuts is provided on the lower surface of the front cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987059856U JPH0756566Y2 (en) | 1987-04-22 | 1987-04-22 | Electrical junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987059856U JPH0756566Y2 (en) | 1987-04-22 | 1987-04-22 | Electrical junction box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63167327U JPS63167327U (en) | 1988-10-31 |
| JPH0756566Y2 true JPH0756566Y2 (en) | 1995-12-25 |
Family
ID=30891743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987059856U Expired - Lifetime JPH0756566Y2 (en) | 1987-04-22 | 1987-04-22 | Electrical junction box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0756566Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5429555B2 (en) * | 2010-01-21 | 2014-02-26 | 住友電装株式会社 | Electrical junction box |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831719U (en) * | 1981-08-12 | 1983-03-02 | 古河電気工業株式会社 | electrical junction box |
| JPS5828417U (en) * | 1981-08-18 | 1983-02-24 | パイオニア株式会社 | Detection circuit |
| JPS61123618U (en) * | 1985-01-23 | 1986-08-04 | ||
| JPS61129416U (en) * | 1985-01-31 | 1986-08-13 |
-
1987
- 1987-04-22 JP JP1987059856U patent/JPH0756566Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63167327U (en) | 1988-10-31 |
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