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JP2014236654A - Electric connection box - Google Patents

Electric connection box Download PDF

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Publication number
JP2014236654A
JP2014236654A JP2013119040A JP2013119040A JP2014236654A JP 2014236654 A JP2014236654 A JP 2014236654A JP 2013119040 A JP2013119040 A JP 2013119040A JP 2013119040 A JP2013119040 A JP 2013119040A JP 2014236654 A JP2014236654 A JP 2014236654A
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Prior art keywords
peripheral wall
cover
base
inner peripheral
outer peripheral
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JP2013119040A
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Japanese (ja)
Inventor
宏恭 古屋
Hiroyasu Furuya
宏恭 古屋
紀夫 渡邊
Norio Watanabe
紀夫 渡邊
千敏 寺田
Chitoshi Terada
千敏 寺田
悦朗 高井
Etsuro Takai
悦朗 高井
寿久 八木
Toshihisa Yagi
寿久 八木
稔也 石川
Toshiya Ishikawa
稔也 石川
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Yazaki Corp
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Yazaki Corp
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Priority to JP2013119040A priority Critical patent/JP2014236654A/en
Priority to CN201410245874.3A priority patent/CN104242189B/en
Publication of JP2014236654A publication Critical patent/JP2014236654A/en
Abandoned legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide an electric connection box which enables a cover to be easily assembled to a base and achieves high waterproofness.SOLUTION: An electric connection box 1 includes: a base 2 where multiple electronic components 5 are attached to the upper surface side; an upper cover 3; and a lower cover 4. A peripheral wall 21 of the base 2 has a double wall structure composed of a base outer peripheral wall 22 and a base inner peripheral wall 33. A peripheral wall 31 of the upper cover 3 has a double wall structure composed of a cover outer peripheral wall 32 and a cover inner peripheral wall 33. An upper end part 22a of the base outer peripheral wall 22 is positioned between the cover outer peripheral wall 32 and the cover inner peripheral wall 33. A lower end part 33a of the cover inner peripheral wall 33 is positioned between the base outer peripheral wall 22 and the base inner peripheral wall 23. The cover inner peripheral wall 33 extends downward to a point lower than the cover outer peripheral wall 32. The lower end part 33a of the cover inner peripheral wall 33 is formed into a taper shape.

Description

本発明は、自動車に搭載される電気接続箱に関するものである。   The present invention relates to an electrical junction box mounted on an automobile.

自動車に搭載される電気接続箱には様々な構造のものがあるが、例えば、図４に示す構造のものがある（例えば特許文献１を参照。）。   There are various types of electrical connection boxes mounted on automobiles. For example, there is a structure shown in FIG. 4 (see, for example, Patent Document 1).

図４に示す電気接続箱３１５は、ベースブロック３１１と、ベースブロック３１１の上面側に取り付けられるリレー３３０等の電子部品と、ベースブロック３１１に組み付けられてリレー３３０等の電子部品を覆うアッパカバー３１０と、を備えている。   An electrical junction box 315 shown in FIG. 4 includes a base block 311, electronic components such as a relay 330 attached to the upper surface side of the base block 311, and an upper cover 310 that is assembled to the base block 311 and covers the electronic components such as the relay 330. And.

上記ベースブロック３１１は、その上面に位置する部品搭載面３２０と、部品搭載面３２０から立設したガイド壁３２１と、周壁３３１と、周壁３３１の内周に形成された水抜き孔３３３と、を有している。   The base block 311 includes a component mounting surface 320 positioned on an upper surface thereof, a guide wall 321 erected from the component mounting surface 320, a peripheral wall 331, and a drain hole 333 formed in the inner periphery of the peripheral wall 331. Have.

上記アッパカバー３１０の周壁は、外周壁３３４及び内周壁３３２から成る二重壁構造となっている。   The peripheral wall of the upper cover 310 has a double wall structure including an outer peripheral wall 334 and an inner peripheral wall 332.

ベースブロック３１１の周壁３３１の上端部は、アッパカバー３１０の外周壁３３４と内周壁３３２との間に位置付けられる。また、アッパカバー３１０の内周壁３３２の下端部は、水抜き孔３３３内に位置付けられる。   The upper end portion of the peripheral wall 331 of the base block 311 is positioned between the outer peripheral wall 334 and the inner peripheral wall 332 of the upper cover 310. Further, the lower end portion of the inner peripheral wall 332 of the upper cover 310 is positioned in the drain hole 333.

このような電気接続箱３１５において、ベースブロック３１１とアッパカバー３１０との隙間３４３から進入した水は、水抜き孔３３３から落下し、電気接続箱３１５外に排出される。   In such an electrical junction box 315, the water that has entered from the gap 343 between the base block 311 and the upper cover 310 falls from the drain hole 333 and is discharged out of the electrical junction box 315.

さらに、上記電気接続箱３１５においては、ベースブロック３１１とアッパカバー３１０との隙間３４３から進入した水が部品搭載面３２０に到達することを確実に阻止するために、部品搭載面３２０をアッパカバー３１０の内周壁３３２の下端よりも上方に配置している。   Further, in the electrical junction box 315, the component mounting surface 320 is placed on the upper cover 310 in order to reliably prevent water that has entered from the gap 343 between the base block 311 and the upper cover 310 from reaching the component mounting surface 320. It arrange | positions rather than the lower end of the inner peripheral wall 332 of this.

特開２００９−１３１０８８号公報JP 2009-131088 A

しかしながら、上述した従来の電気接続箱３１５においては、以下に示す問題があった。すなわち、上記アッパカバー３１０は、外周壁３３４が内周壁３３２よりも下まで延びている構成であるがゆえに、アッパカバー３１０をベースブロック３１１に組み付ける際、アッパカバー３１０の内周壁３３２を目視することができず、そのために、アッパカバー３１０の内周壁３３２を水抜き孔３３３内に挿入しづらく（狙い難く）、組み付け作業性が悪いという問題があった。   However, the conventional electrical junction box 315 described above has the following problems. That is, since the upper cover 310 has a configuration in which the outer peripheral wall 334 extends below the inner peripheral wall 332, when the upper cover 310 is assembled to the base block 311, the inner peripheral wall 332 of the upper cover 310 is visually observed. Therefore, it is difficult to insert the inner peripheral wall 332 of the upper cover 310 into the drain hole 333 (it is difficult to aim), and there is a problem that the assembling workability is poor.

なお、アッパカバー３１０の内周壁３３２の長さを短くすれば上述した組み付け作業性は向上されるが、その場合、ベースブロック３１１とアッパカバー３１０との隙間３４３から進入した水が部品搭載面３２０に到達し易くなってしまうという問題があった。   If the length of the inner peripheral wall 332 of the upper cover 310 is shortened, the above-described assembly workability is improved. In this case, water that has entered from the gap 343 between the base block 311 and the upper cover 310 is part mounting surface 320. There was a problem that it would be easy to reach.

したがって、本発明は、カバーをベースに容易に組み付けることができ、かつ、防水性が高い電気接続箱を提供することを目的とする。   Accordingly, an object of the present invention is to provide an electrical junction box that can be easily assembled to a base and has high waterproofness.

請求項１に記載された発明は、上面側に電子部品が取り付けられるベースと、前記ベースに組み付けられて前記電子部品を覆うカバーと、を備え、前記ベースの周壁が、ベース外周壁及びベース内周壁から成る二重壁構造となっており、前記カバーの周壁が、カバー外周壁及びカバー内周壁から成る二重壁構造となっており、前記ベース外周壁の上端部が前記カバー外周壁と前記カバー内周壁との間に位置付けられ、前記カバー内周壁の下端部が前記ベース外周壁と前記ベース内周壁との間に位置付けられ、前記カバー外周壁と前記ベース外周壁との間から進入した水が、前記ベース外周壁と前記ベース内周壁との間から落下する電気接続箱において、前記カバー内周壁が前記カバー外周壁よりも下まで延びていることを特徴とする電気接続箱である。   The invention described in claim 1 includes a base to which an electronic component is attached on an upper surface side, and a cover that is assembled to the base and covers the electronic component, and the peripheral wall of the base includes the base outer peripheral wall and the base inside The cover has a double wall structure, and the cover has a double wall structure including a cover outer peripheral wall and a cover inner peripheral wall, and an upper end portion of the base outer peripheral wall is connected to the cover outer peripheral wall and the cover outer wall. Water that is positioned between the cover outer peripheral wall and the lower end portion of the cover inner peripheral wall is positioned between the base outer peripheral wall and the base inner peripheral wall, and enters between the cover outer peripheral wall and the base outer peripheral wall. In the electrical junction box falling from between the base outer peripheral wall and the base inner peripheral wall, the cover inner peripheral wall extends below the cover outer peripheral wall. It is.

請求項２に記載された発明は、請求項１に記載された発明において、前記カバー内周壁の下端部が先細形状に形成されていることを特徴とするものである。   The invention described in claim 2 is characterized in that, in the invention described in claim 1, a lower end portion of the cover inner peripheral wall is formed in a tapered shape.

請求項３に記載された発明は、請求項１又は請求項２に記載された発明において、前記カバー内周壁が、前記ベースの上面側の部品搭載面よりも下まで延びていることを特徴とするものである。   The invention described in claim 3 is the invention described in claim 1 or 2, characterized in that the inner peripheral wall of the cover extends below a component mounting surface on the upper surface side of the base. To do.

請求項１に記載された発明によれば、前記カバー内周壁が前記カバー外周壁よりも下まで延びているので、カバーをベースに組み付ける際、カバー内周壁を目視しながらカバー内周壁の下端部をベース外周壁とベース内周壁との間に位置付けることができる。よって、カバーをベースに容易に組み付けることができ、かつ、防水性が高い電気接続箱を提供することができる。   According to the first aspect of the present invention, since the cover inner peripheral wall extends below the cover outer peripheral wall, when assembling the cover to the base, the lower end portion of the cover inner peripheral wall is observed while observing the cover inner peripheral wall. Can be positioned between the base outer peripheral wall and the base inner peripheral wall. Therefore, it is possible to provide an electrical junction box that can be easily assembled to the base and is highly waterproof.

請求項２に記載された発明によれば、前記カバー内周壁の下端部が先細形状に形成されているので、カバー内周壁の下端部をさらに容易にベース外周壁とベース内周壁との間に位置付けることができる。   According to the second aspect of the present invention, since the lower end portion of the cover inner peripheral wall is formed in a tapered shape, the lower end portion of the cover inner peripheral wall can be more easily interposed between the base outer peripheral wall and the base inner peripheral wall. Can be positioned.

請求項３に記載された発明によれば、前記カバー内周壁が、前記ベースの上面側の部品搭載面よりも下まで延びているので、カバー外周壁とベース外周壁との間から進入した水を、より一層、部品搭載面に到達し難くすることができ、防水性を向上させることができる。   According to the invention described in claim 3, since the inner peripheral wall of the cover extends below the component mounting surface on the upper surface side of the base, the water that has entered from between the outer peripheral wall of the cover and the outer peripheral wall of the base. Can be made more difficult to reach the component mounting surface, and waterproofness can be improved.

本発明の一実施形態にかかる電気接続箱の斜視図である。It is a perspective view of the electrical junction box concerning one embodiment of the present invention. 図１中のＡ−Ａ線に沿った断面図である。It is sectional drawing along the AA line in FIG. 図２中の要部を拡大した図である。It is the figure which expanded the principal part in FIG. 従来の電気接続箱の断面図である。It is sectional drawing of the conventional electrical junction box.

本発明の一実施形態にかかる「電気接続箱」を図１〜３を参照して説明する。   An “electric connection box” according to an embodiment of the present invention will be described with reference to FIGS.

図１，２に示す電気接続箱１は、自動車に搭載されて主に電源分配を行うものであり、上面側にリレー、ヒューズ等の複数の電子部品５が取り付けられるベース２と、ベース２の上面側に組み付けられて電子部品５を覆うアッパカバー（請求項の「カバー」に相当する。）３と、ベース２の下面側に組み付けられるロアカバー４と、を備えている。   An electric junction box 1 shown in FIGS. 1 and 2 is mounted on an automobile and mainly performs power distribution. A base 2 to which a plurality of electronic components 5 such as relays and fuses are attached on an upper surface side, and a base 2 An upper cover (corresponding to a “cover” in the claims) 3 that is assembled on the upper surface side and covers the electronic component 5 and a lower cover 4 that is assembled on the lower surface side of the base 2 are provided.

上記ベース２は、合成樹脂によりブロック状に形成されている。ベース２の上面には上記電子部品５が載置される部品搭載面２０が設けられ、部品搭載面２０からは電子部品５を部品搭載面２０へガイドするガイド壁２４が立設している。部品搭載面２０には電子部品５の端子部が差し込まれる差込孔２５が設けられている。差込孔２５に差し込まれた電子部品５の端子部は、ベース２内に取り付けられたバスバや端子付き電線と電気接続される。これらバスバや端子付き電線は、ベース２の下面側からベース２内に取り付けられる。   The base 2 is formed in a block shape from a synthetic resin. A component mounting surface 20 on which the electronic component 5 is placed is provided on the upper surface of the base 2, and a guide wall 24 that guides the electronic component 5 to the component mounting surface 20 is erected from the component mounting surface 20. The component mounting surface 20 is provided with an insertion hole 25 into which a terminal portion of the electronic component 5 is inserted. The terminal portion of the electronic component 5 inserted into the insertion hole 25 is electrically connected to a bus bar or a terminal-attached electric wire attached in the base 2. These bus bars and electric wires with terminals are attached to the base 2 from the lower surface side of the base 2.

また、上記ベース２の周壁２１は、電気接続箱１の防水性を高めるため、ベース外周壁２２及びベース内周壁２３から成る二重壁構造となっている。ベース外周壁２２の上端部には、アッパカバー３を固定するためのロック７が設けられ、ベース外周壁２２の下端部には、ロアカバー４を固定するためのロック９が設けられている。   Further, the peripheral wall 21 of the base 2 has a double wall structure including a base outer peripheral wall 22 and a base inner peripheral wall 23 in order to enhance the waterproof property of the electrical junction box 1. A lock 7 for fixing the upper cover 3 is provided at the upper end portion of the base outer peripheral wall 22, and a lock 9 for fixing the lower cover 4 is provided at the lower end portion of the base outer peripheral wall 22.

上記アッパカバー３は、合成樹脂で構成されており、天井壁３０と周壁３１とから成る箱状に形成されている。アッパカバー３の周壁３１は、電気接続箱１の防水性を高めるため、カバー外周壁３２及びカバー内周壁３３から成る二重壁構造となっている。カバー外周壁３２の下端部には、ベース２のロック７に係止するロック６が設けられている。   The upper cover 3 is made of a synthetic resin and is formed in a box shape including a ceiling wall 30 and a peripheral wall 31. The peripheral wall 31 of the upper cover 3 has a double wall structure including a cover outer peripheral wall 32 and a cover inner peripheral wall 33 in order to enhance the waterproofness of the electrical junction box 1. A lock 6 that engages with the lock 7 of the base 2 is provided at the lower end of the cover outer peripheral wall 32.

上記ロアカバー４は、合成樹脂で構成されており、底壁４０と周壁４１とから成る箱状に形成されている。周壁４１の上端部には、ベース２のロック９に係止するロック８が設けられている。   The lower cover 4 is made of synthetic resin and is formed in a box shape including a bottom wall 40 and a peripheral wall 41. A lock 8 that engages with the lock 9 of the base 2 is provided at the upper end of the peripheral wall 41.

図３に示すように、ベース外周壁２２の上端部２２ａは、カバー外周壁３２とカバー内周壁３３との間に位置付けられる。また、カバー内周壁３３の下端部３３ａは、ベース外周壁２２とベース内周壁２３との間に位置付けられる。また、カバー内周壁３３の下端部３３ａは、ベース外周壁２２及びベース内周壁２３に密着しておらず、これらとの間に隙間を有している。   As shown in FIG. 3, the upper end portion 22 a of the base outer peripheral wall 22 is positioned between the cover outer peripheral wall 32 and the cover inner peripheral wall 33. Further, the lower end portion 33 a of the cover inner peripheral wall 33 is positioned between the base outer peripheral wall 22 and the base inner peripheral wall 23. Further, the lower end portion 33a of the cover inner peripheral wall 33 is not in close contact with the base outer peripheral wall 22 and the base inner peripheral wall 23, and has a gap therebetween.

また、上記カバー内周壁３３は、カバー外周壁３２よりも下まで延びている。このことから、アッパカバー３をベース２に組み付ける際、カバー内周壁３３を目視しながらカバー内周壁３３の下端部３３ａをベース外周壁２２とベース内周壁２３との間に位置付けることができ、アッパカバー３をベース２に容易に組み付けることができる。   Further, the cover inner peripheral wall 33 extends below the cover outer peripheral wall 32. Therefore, when the upper cover 3 is assembled to the base 2, the lower end portion 33a of the cover inner peripheral wall 33 can be positioned between the base outer peripheral wall 22 and the base inner peripheral wall 23 while visually observing the cover inner peripheral wall 33. The cover 3 can be easily assembled to the base 2.

また、上記カバー内周壁３３の下端部３３ａは、先細形状に形成されている。このことから、アッパカバー３をベース２に組み付ける際、カバー内周壁３３の下端部３３ａをさらに容易にベース外周壁２２とベース内周壁２３との間に位置付けることができ、アッパカバー３をベース２にさらに容易に組み付けることができる。   The lower end portion 33a of the cover inner peripheral wall 33 is formed in a tapered shape. Therefore, when the upper cover 3 is assembled to the base 2, the lower end portion 33 a of the cover inner peripheral wall 33 can be more easily positioned between the base outer peripheral wall 22 and the base inner peripheral wall 23. Can be assembled more easily.

このような電気接続箱１において、カバー外周壁３２とベース外周壁２２との間から進入した水は、ベース外周壁２２とベース内周壁２３との間から落下し、部品搭載面２０に到達することなく電気接続箱１外に排出される。さらに、カバー内周壁３３は、ベース２の部品搭載面２０よりも下まで延びている。このことから、カバー外周壁３２とベース外周壁２２との間から進入した水を、より一層、部品搭載面２０に到達し難くすることができ、電気接続箱１の防水性を向上させることができる。   In such an electrical junction box 1, the water that has entered from between the cover outer peripheral wall 32 and the base outer peripheral wall 22 falls from between the base outer peripheral wall 22 and the base inner peripheral wall 23 and reaches the component mounting surface 20. Without being discharged outside the electrical junction box 1. Further, the cover inner peripheral wall 33 extends below the component mounting surface 20 of the base 2. From this, it is possible to make water entering from between the cover outer peripheral wall 32 and the base outer peripheral wall 22 more difficult to reach the component mounting surface 20, and to improve the waterproofness of the electrical junction box 1. it can.

なお、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。   In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

１ 電気接続箱
２ ベース
３ アッパカバー（カバー）
５ 電子部品
２１ 周壁
２２ ベース外周壁
２３ ベース内周壁
３１ 周壁
３２ カバー外周壁
３３ カバー内周壁 1 Electrical junction box 2 Base 3 Upper cover (cover)
5 Electronic components 21 Peripheral wall 22 Base outer peripheral wall 23 Base inner peripheral wall 31 Peripheral wall 32 Cover outer peripheral wall 33 Cover inner peripheral wall

Claims (3)

上面側に電子部品が取り付けられるベースと、前記ベースに組み付けられて前記電子部品を覆うカバーと、を備え、
前記ベースの周壁が、ベース外周壁及びベース内周壁から成る二重壁構造となっており、
前記カバーの周壁が、カバー外周壁及びカバー内周壁から成る二重壁構造となっており、
前記ベース外周壁の上端部が前記カバー外周壁と前記カバー内周壁との間に位置付けられ、前記カバー内周壁の下端部が前記ベース外周壁と前記ベース内周壁との間に位置付けられ、
前記カバー外周壁と前記ベース外周壁との間から進入した水が、前記ベース外周壁と前記ベース内周壁との間から落下する電気接続箱において、
前記カバー内周壁が前記カバー外周壁よりも下まで延びている
ことを特徴とする電気接続箱。 A base on which an electronic component is attached to the upper surface side, and a cover that is assembled to the base and covers the electronic component,
The peripheral wall of the base has a double wall structure consisting of a base outer peripheral wall and a base inner peripheral wall,
The peripheral wall of the cover has a double wall structure comprising a cover outer peripheral wall and a cover inner peripheral wall,
An upper end portion of the base outer peripheral wall is positioned between the cover outer peripheral wall and the cover inner peripheral wall, and a lower end portion of the cover inner peripheral wall is positioned between the base outer peripheral wall and the base inner peripheral wall,
In the electrical junction box in which water that has entered from between the cover outer peripheral wall and the base outer peripheral wall falls from between the base outer peripheral wall and the base inner peripheral wall,
The electrical connection box, wherein the cover inner peripheral wall extends below the cover outer peripheral wall. 前記カバー内周壁の下端部が先細形状に形成されている
ことを特徴とする請求項１に記載の電気接続箱。 The electrical connection box according to claim 1, wherein a lower end portion of the inner peripheral wall of the cover is formed in a tapered shape. 前記カバー内周壁が、前記ベースの上面側の部品搭載面よりも下まで延びている
ことを特徴とする請求項１又は請求項２に記載の電気接続箱。 The electrical connection box according to claim 1, wherein the inner peripheral wall of the cover extends below a component mounting surface on the upper surface side of the base.
JP2013119040A 2013-06-05 2013-06-05 Electric connection box Abandoned JP2014236654A (en)

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JP2015068781A (en) * 2013-09-30 2015-04-13 東洋電装株式会社 Detector
JP2016137914A (en) * 2015-01-27 2016-08-04 三笠産業株式会社 Hinge cap
WO2016194588A1 (en) * 2015-06-05 2016-12-08 住友電装株式会社 Electric connection box, and waterproofing structure for electric connection box
JP2017005791A (en) * 2015-06-05 2017-01-05 住友電装株式会社 Electric connection box and waterproof structure of the same
CN107615607A (en) * 2015-06-05 2018-01-19 住友电装株式会社 The waterproof construction of electric connection box and electric connection box
US10411449B2 (en) 2015-06-05 2019-09-10 Sumitomo Wiring Systems, Ltd. Electrical junction box and waterproofing structure for electrical junction box
US10462914B2 (en) 2017-10-19 2019-10-29 Sumitomo Wiring Systems, Ltd. Cover structure and electric connection box
JP2019088125A (en) * 2017-11-08 2019-06-06 矢崎総業株式会社 Electric connection box and wire harness
JP2019210027A (en) * 2018-06-07 2019-12-12 矢崎総業株式会社 Liquid-proof structure for fitting body, electrical connection box and wire harness
JP2020039194A (en) * 2018-09-03 2020-03-12 矢崎総業株式会社 Electric connection box and wiring harness
JP7120852B2 (en) 2018-09-03 2022-08-17 矢崎総業株式会社 Electrical Junction Box and Wire Harness

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