WO2009101893A1 - 電気接続箱の防水構造 - Google Patents
電気接続箱の防水構造 Download PDFInfo
- Publication number
- WO2009101893A1 WO2009101893A1 PCT/JP2009/051967 JP2009051967W WO2009101893A1 WO 2009101893 A1 WO2009101893 A1 WO 2009101893A1 JP 2009051967 W JP2009051967 W JP 2009051967W WO 2009101893 A1 WO2009101893 A1 WO 2009101893A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- body case
- main body
- cover
- junction box
- wall portion
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0239—Electronic boxes
Definitions
- the present invention relates to a waterproof structure for an electrical junction box attached to an engine room of a car.
- an electrical junction box for supplying power from a battery to various electrical components is attached.
- the electrical junction box includes a plurality of connectors, and includes a resin-integrated main body case and a cover, each housing an electrical circuit board connected to the connectors.
- a locking protrusion protrudes from one outer surface of the main body case or the cover, and an engaging protrusion protrudes from the other inner surface.
- the locking protrusion and the engaging protrusion The cover is attached to the main body case by engagement with the electric circuit board, and the electric circuit board accommodated in the electric junction box is protected from external water droplets and dust (for example, see Patent Document 1). ).
- FIG. 7 is a schematic view showing an electrical junction box 1 having such a stepped portion, and the electrical junction box 1 includes a body case 2 and a cover 4 that are integrally formed with resin.
- the main body case 2 has a locking projection 52 projecting from the outer surface of the peripheral wall 51, and an engaging projection (not shown) projecting from the locking projection 52 to the inner surface of the peripheral wall 53 of the cover 4.
- the cover 4 is attached to the main body case 2 to protect an electric circuit board (not shown) housed in the electric junction box 1 from external water droplets and dust.
- An ECU unit (not shown) is mounted on the main body case 2 from the side surface 54 of the main body case 2, and for this reason, a part of the main body case 2 is increased in accordance with the external dimensions of the ECU unit. Is formed. That is, a step portion 55 is formed on a part 51 a of the peripheral wall 51 of the main body case 2, and the ECU unit is mounted on the enlarged portion 56 side of the main body case 2 where the step portion 55 is formed. It is like that. JP-A-8-317534
- 51a may be attached so as to face upward in the engine room, but the outer surface of the peripheral wall 51a of the main body case 2 attached so as to face upward in the engine room has the locking protrusion as described above.
- 52 is integrally molded with resin, and in order to mold the locking projection 52 by integral molding with the main body case 2, a mold release hole 56 is formed in the stepped portion 55 of the main body case 2 due to the relationship of the mold. Need to form.
- an object of the present invention is to provide an electrical junction box having a step portion that requires the formation of a die-cutting hole for forming a locking projection on the peripheral wall of the main body case, from the die-cutting hole to the inside of the main body case.
- An object of the present invention is to provide a waterproof structure for an electrical junction box that can prevent water droplets from entering and improve waterproof performance.
- the waterproof structure for an electrical junction box according to claim 1 has a plurality of connectors, and a resin-molded main body case and a cover each housing an electrical circuit board connected to the connectors. And the engagement protrusion projecting from the inner surface of the peripheral wall of the cover is engaged with the engagement protrusion projecting from the outer surface of the peripheral wall of the main body case, and the cover is attached to the main body case.
- a hole sealing portion is provided at an edge of the wall portion of the cover so as to close a die-cutting hole of the main body case in a state where the cover is attached to the main body case.
- the waterproof structure of the electrical junction box according to claim 2 is the waterproof structure of the electrical junction box according to claim 1, wherein the main body case includes a connector provided across the stepped portion, The step portion is provided with an extension portion for moving the die cutting hole toward the locking projection.
- the waterproof structure of the electrical junction box according to claim 1 includes a plurality of connectors, each having a resin-integrated main body case and a cover that accommodates an electrical circuit board connected to the connectors, The cover is attached to the main body case by engaging the engaging protrusion protruding from the inner surface of the cover with the engaging protrusion protruding from the outer surface of the peripheral wall, and at least one of the peripheral walls of the main body case
- the structure of the electrical junction box having a step portion that requires the formation of a punching hole for forming the locking projection, an edge of the wall portion of the cover corresponding to the at least one peripheral wall of the main body case Since the hole sealing portion that closes the die-cutting hole of the main body case in a state where the cover is attached to the main body case is provided in the portion, the hole sealing portion of the cover attached to the main body case Thus the die-cut hole to be able to completely occlude, Therefore, it is possible to improve the waterproof performance in the punched holes that need to be formed on the connectors
- the waterproof structure of the electrical junction box according to claim 2 is the waterproof structure of the electrical junction box according to claim 1, wherein the main body case includes a connector provided across the stepped portion, Since the extension part for moving the die-cutting hole to the locking projection side is provided in the stepped part, the moving part is moved to the locking projection side by the hole sealing part of the cover attached to the main body case.
- the mold punching hole can be reliably closed, and water droplets and the like can be prevented from entering the inside of the main body case from the mold punching hole, so that electrical parts such as an electric circuit board housed in the main body case are wetted. Can be prevented.
- FIG. 3 is a sectional view taken along line III-III in FIG. 1. It is sectional drawing to which the principal part of FIG. 3 was expanded.
- FIG. 5 is a schematic plan view for explaining the relationship between the locking protrusion and the mold release hole of FIG. 4.
- FIG. 5 is a schematic plan view for explaining the relationship between the locking projection and the engagement projection of FIG. 4 and the relationship between the hole sealing portion of the engagement projection and the mold release hole. It is the schematic explaining the waterproof structure of the conventional electrical junction box.
- Body case 2 4 cover 22 left wall portion 22b tip portion of left wall portion 25 peripheral wall 29 electric circuit board 33 locking projection 35 step portion 36 connector 37 die hole 37a gap portion 37d extension portion 42 left wall portion 42a edge portion 45 peripheral wall 46 upper wall Part 46a partition wall 46b slit 46d tongue-like piece 47 engagement protrusion 47a hole sealing part
- FIG. 1 A waterproof structure for an electrical junction box according to an embodiment of the present invention will be described with reference to FIGS.
- An electrical junction box 1 shown in FIG. 1 or the like is attached to an engine room or the like of an automobile and supplies power from a battery to various electrical components.
- the electrical junction box 1 includes a main body case 2 and a cover 4 each integrally molded from an insulating synthetic resin.
- the main body case 2 includes a peripheral wall 25 in which a front wall portion 21, a left wall portion 22, a rear wall portion 23, and a right wall portion 24 are arranged in a rectangular shape in plan view, Connectors 26, 27, and 28 are provided on the front wall portion 21, the rear wall portion 23, and the right wall portion 24 of the peripheral wall 25, respectively.
- an electric circuit board 29 electrically connected to each of the connectors 26 to 28 is accommodated in the main body case 2.
- the electric circuit board 29 includes a substrate 29a made of an insulating synthetic resin and a circuit pattern (not shown) formed on the substrate 29a, and various electronic components (not shown) are mounted on the substrate 29a.
- the electric circuit board 29 is horizontally arranged and fixed on the upper surface side of the main body case 2 by a screw 31 that is screwed into a boss portion 30 erected in the main body case 2. ing.
- the main body case 2 is provided with the cover 4 so as to cover the upper surface thereof, so that the electric circuit board 29 accommodated in the main body case 2 is protected from water droplets and dust.
- the cover 4 also includes a peripheral wall 45 in which a front wall portion 41, a left wall portion 42, a rear wall portion 43, and a right wall portion 44 are arranged in a rectangular shape in plan view, and further, the peripheral wall On the upper surface side of 45, there is provided an upper wall portion 46 that is orthogonal to the peripheral wall 45 and continues integrally therewith.
- the front wall portion 21, the left wall portion 22, the rear wall portion 23, and the right wall portion 24 constituting the peripheral wall 25 of the main body case 2 are respectively provided on the outside thereof.
- Two locking projections 32 and 33 projecting from the surface (the locking projections of the rear wall portion 23 and the right wall portion 24 are not shown) are integrally molded with the main body case 2.
- the front protrusion 41, the left wall 42, the rear wall 43, and the right wall 44 constituting the peripheral wall 45 of the cover 4 are respectively provided with the locking protrusions.
- Two engagement projections 47 (the engagement projections of the front wall portion 41, the rear wall portion 43 and the right wall portion 44 are not shown) provided on the inner surface at positions corresponding to 32 and 33 are connected to the cover 4. Resin integrated molding. Then, as shown in FIG. 4, the engagement protrusion 47 of the cover 4 gets over the tapered surface 33 a of the engagement protrusion 33 of the main body case 2, and the engagement protrusion 47 engages with the engagement protrusion 33. Thus, the cover 4 is attached to the upper surface of the main body case 2.
- an ECU unit (not shown) is mounted on the main body case 2 from the lower surface side 34 of the main body case 2.
- a part of the main body case 2 is formed large in accordance with the external dimensions of the ECU unit to be mounted. That is, the left wall portion 22, which is a part of the peripheral wall 25 of the main body case 2, bulges outward from the intermediate portion in the vertical direction of the left wall portion 22 so that the ECU unit can be mounted.
- a stepped portion 35 is formed.
- the main body case 2 crosses the step portion 35 on the left wall portion 22 of the main body case 2 where the step portion 35 is formed.
- a connector 36 extending from the lower surface side to the upper surface side is provided.
- the locking projections 33 project from the both sides of the connector 36.
- a thickness of a punching die is formed around the locking projection 33. It is necessary to provide a gap portion 37a having a U-shaped cross section, and for this purpose, the stepped portion 35 is provided with the punching hole 37 having a larger sectional area in plan view than the locking projection 33 including the gap portion 37a. Need to form.
- the electrical connection box 1 has a structure in which the left wall portion 22 of the main body case 2 in which the stepped portion 35 is formed is located upward in the engine room (FIGS. 1 to 3 (direction A shown in FIG. 3).
- the mounting bracket 21a provided on the front wall portion 21 and the mounting bracket 22a provided on the left wall portion 22 of the main body case 2 shown in FIGS. 1 and 2 are inserted.
- the left wall portion 22 of the main body case 2 When the left wall portion 22 of the main body case 2 is attached upward by a screw or the like that is screwed and fixed at a predetermined position in the engine room, the left side of the main body case 2 is When water droplets are sprayed toward the wall portion 22, there is a possibility that water droplets may enter the inside of the main body case 2 from the mold release holes 37 that need to be formed in the stepped portion 35.
- the object of the present invention is to improve the waterproof performance of the die-cutting hole 37 that needs to be formed in the step portion 35.
- a hole sealing portion 47 a is formed at the edge of the left wall portion 42 of the cover 4 where the engagement projection 47 that engages with the projection 33 is formed. That is, as shown in the schematic plan views of FIGS. 4 and 6, the edge 42 a of the left wall 42 of the cover 4 is sufficient to engage with the locking protrusion 33, for example, the engagement An engaging projection 47 having the same cross-sectional area in plan view as that of the stop projection 33 is formed, and the entire opening of the die punching hole 37 including the gap portion 37 a formed around the locking projection 33. A hole sealing portion 47a large enough to cover the surface is formed.
- the left side wall portion 22 of the main body case 2 moves the position of the die-cutting hole 37 that needs to be formed in the stepped portion 35 to the locking projection 33 side.
- the mold is formed in an extension portion 37d and moved to the locking projection 33 side on the edge 42a of the left wall portion 42 of the cover 4 with the cover 4 attached to the main body case 2. Since the hole sealing portion 47a that covers the entire opening of the punching hole 37 is formed, the punching hole 37 can be completely blocked by the hole sealing portion 47a of the cover 4 attached to the main body case 2. It is possible to reliably prevent water droplets or the like from entering the inside of the main body case 2 from the mold release hole 37, and to prevent the electric parts such as the electric circuit board 29 accommodated in the main body case 2 from getting wet. Can prevent Is shall.
- the step portion 35 of the main body case 2 is provided with an extension portion 37d for moving the die cutting hole 37 to the position on the locking projection 33 side
- the cover 4 that engages with the locking projection 33 is provided. It is no longer necessary to partially extend the corresponding portion to the position of the punching hole 37 formed in the step portion 35 on the main body case 2 side, and the sealing force of the hole sealing portion 47a of the cover 4 can be increased. It can be enough.
- the locking projection 33 engages with the engagement projection 47 on the inner surface of the left wall portion 42 of the cover 4.
- the tip 22 b of the left wall portion 22 of the main body case 2 is The cover 4 is inserted into a slit 46 b formed in a partition wall 46 a extending from the inner surface of the upper wall portion 46 of the cover 4 toward the main body case 2 side. That is, as shown in FIGS. 1 and 2, a plurality of openings 46 c are formed in a row along the left wall portion 42 of the cover 4 in the upper wall portion 46 of the cover 4.
- a plurality of the partition walls 46a are formed between the adjacent openings 46c.
- the slits 46b extending from the main body case 2 side toward the cover 4 side are formed in a line at the end portions of the plurality of partition walls 46a on the main body case 2 side.
- the distal end portion 22b of the left wall portion 22 of the main body case 2 is inserted into the slit 46b.
- the plurality of openings 46c of the upper wall portion 46 of the cover 4 respectively extend from the upper wall portion 46 toward the main body case 2 and are inserted into the slits 46b.
- a tongue-like piece 46d that urges the front end portion 22b of the left wall portion 22 from the back side of the left wall portion 22 where the locking projection 33 is not formed is formed integrally with the upper wall portion 46. Then, the entire front end portion 22b of the left wall portion 22 inserted into the slit 46b is urged by the plurality of tongue-shaped pieces 46d to form the front end portion 22b of the left wall portion 22 on the front side. The latching projection 33 thus engaged is surely engaged with the engagement projection 47 on the cover 4 side.
- the cover 4 attached to the main body case 2 from the step 35 to the step 35 of the left wall portion 22 of the main body case 2 where the die-cutting hole 37 needs to be formed.
- An extending portion 37d extending toward the side is formed so that the position of the die-cutting hole 37 that needs to be formed in the stepped portion 35 is moved to the locking projection 33 side.
- the left wall portion 22 of the case 2 is provided with a connector 36 that extends from the lower surface side to the upper surface side of the main body case 2 across the step portion 35, and the connector 36 is not provided.
- Is formed in the stepped portion 35 itself of the left wall portion 22 of the main body case 2 and the edge of the cover 4 attached to the main body case 2 on the main body case 2 side is It is formed so as to extend to the position of the portion 35, and the punching hole 37 formed in the step portion 35 itself is closed by the hole sealing portion 47a at the edge portion of the cover 4 formed by extension. good.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Or Junction Boxes (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
Description
2 本体ケース2
4 カバー
22 左壁部
22b 左壁部の先端部
25 周壁
29 電気回路板
33 係止突起
35 段部
36 コネクタ
37 型抜き孔
37a 空隙部
37d 延長部
42 左壁部
42a 縁部
45 周壁
46 上壁部
46a 区画壁
46b スリット
46d 舌状片
47 係合突起
47a 孔封止部
Claims (2)
- 複数のコネクタを有し、該コネクタに接続された電気回路板を収容するそれぞれ樹脂一体成形の本体ケースとカバーとを備え、
前記本体ケースの周壁外表面に突設した係止突起に前記カバーの周壁内表面に突設した係合突起が係合して前記本体ケースに前記カバーが取り付けられ、
前記本体ケースの周壁のうち少なくとも一つの周壁に、前記係止突起を成形するための型抜き孔の形成を必要とする段部を有する電気接続箱の構造において、
前記本体ケースの前記少なくとも一つの周壁に対応した前記カバーの壁部の縁部に、前記本体ケースに前記カバーが取り付けられた状態で前記本体ケースの型抜き孔を塞ぐ孔封止部を設けたことを特徴とする電気接続箱の防水構造。 - 前記本体ケースが前記段部を横切って設けられたコネクタを備え、
前記本体ケースの前記段部に、前記型抜き孔を前記係止突起側に移動させる延長部を設けたことを特徴とする請求項1に記載の電気接続箱の防水構造。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/866,820 US8389856B2 (en) | 2008-02-13 | 2009-02-05 | Waterproof structure of electrical junction box |
CN200980105076.8A CN101946381B (zh) | 2008-02-13 | 2009-02-05 | 电接线箱的防水结构 |
EP09710898.9A EP2244344B1 (en) | 2008-02-13 | 2009-02-05 | Waterproof structure of electric junction box |
AU2009213464A AU2009213464B2 (en) | 2008-02-13 | 2009-02-05 | Waterproof structure of electrical junction box |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-032328 | 2008-02-13 | ||
JP2008032328A JP5007249B2 (ja) | 2008-02-13 | 2008-02-13 | 電気接続箱の防水構造 |
Publications (1)
Publication Number | Publication Date |
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WO2009101893A1 true WO2009101893A1 (ja) | 2009-08-20 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2009/051967 WO2009101893A1 (ja) | 2008-02-13 | 2009-02-05 | 電気接続箱の防水構造 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8389856B2 (ja) |
EP (1) | EP2244344B1 (ja) |
JP (1) | JP5007249B2 (ja) |
CN (1) | CN101946381B (ja) |
AU (1) | AU2009213464B2 (ja) |
WO (1) | WO2009101893A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102315612A (zh) * | 2010-07-06 | 2012-01-11 | 矢崎总业株式会社 | 防水外壳 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5859228B2 (ja) * | 2011-06-21 | 2016-02-10 | 矢崎総業株式会社 | 箱体 |
JP5943375B2 (ja) | 2012-01-13 | 2016-07-05 | 矢崎総業株式会社 | 電気接続箱 |
JP5905800B2 (ja) * | 2012-09-04 | 2016-04-20 | 日立オートモティブシステムズ株式会社 | 電子制御装置のシール構造 |
JP5936065B2 (ja) * | 2012-10-04 | 2016-06-15 | 住友電装株式会社 | 電気接続箱 |
KR101687231B1 (ko) * | 2015-07-31 | 2016-12-16 | 한국단자공업 주식회사 | 자동차용 블럭 |
CN108028611B (zh) * | 2015-09-11 | 2020-04-21 | 日立汽车***株式会社 | 电路装置 |
EP3177119B1 (en) * | 2015-12-01 | 2018-09-19 | FRIWO Gerätebau GmbH | Waterproof case, power supply, and assembly method |
US9847630B1 (en) * | 2017-02-09 | 2017-12-19 | Sumitomo Wiring Systems, Ltd. | Locking and retaining structure for attaching fuse box to battery tray |
JP2019122193A (ja) * | 2018-01-10 | 2019-07-22 | 住友電装株式会社 | 電気接続箱 |
KR102499820B1 (ko) | 2018-03-15 | 2023-02-15 | 한국단자공업 주식회사 | 온도데이터를 사용하는 자동차용 블럭 |
CN108545038A (zh) * | 2018-06-13 | 2018-09-18 | 安徽华菱汽车有限公司 | 一种汽车用电气防火墙模块及卡车 |
JP2020132000A (ja) * | 2019-02-21 | 2020-08-31 | 住友電装株式会社 | 電子モジュール |
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JPH08317534A (ja) | 1995-05-16 | 1996-11-29 | Sumitomo Wiring Syst Ltd | 電気接続箱 |
JPH10257639A (ja) * | 1997-03-11 | 1998-09-25 | Sumitomo Wiring Syst Ltd | 電気接続箱 |
JP2004297975A (ja) * | 2003-03-28 | 2004-10-21 | Yazaki Corp | 電気接続箱の防水構造 |
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JP2004254479A (ja) * | 2003-02-21 | 2004-09-09 | Yazaki Corp | 電気接続箱の防水構造 |
JP4322752B2 (ja) * | 2004-08-03 | 2009-09-02 | 株式会社オートネットワーク技術研究所 | 電気接続箱 |
JP2006174538A (ja) * | 2004-12-13 | 2006-06-29 | Yazaki Corp | 電気接続箱 |
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2008
- 2008-02-13 JP JP2008032328A patent/JP5007249B2/ja active Active
-
2009
- 2009-02-05 CN CN200980105076.8A patent/CN101946381B/zh active Active
- 2009-02-05 AU AU2009213464A patent/AU2009213464B2/en active Active
- 2009-02-05 US US12/866,820 patent/US8389856B2/en active Active
- 2009-02-05 WO PCT/JP2009/051967 patent/WO2009101893A1/ja active Application Filing
- 2009-02-05 EP EP09710898.9A patent/EP2244344B1/en active Active
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JPH08317534A (ja) | 1995-05-16 | 1996-11-29 | Sumitomo Wiring Syst Ltd | 電気接続箱 |
JPH10257639A (ja) * | 1997-03-11 | 1998-09-25 | Sumitomo Wiring Syst Ltd | 電気接続箱 |
JP2004297975A (ja) * | 2003-03-28 | 2004-10-21 | Yazaki Corp | 電気接続箱の防水構造 |
Non-Patent Citations (1)
Title |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102315612A (zh) * | 2010-07-06 | 2012-01-11 | 矢崎总业株式会社 | 防水外壳 |
Also Published As
Publication number | Publication date |
---|---|
EP2244344A1 (en) | 2010-10-27 |
CN101946381A (zh) | 2011-01-12 |
EP2244344A4 (en) | 2012-07-11 |
EP2244344B1 (en) | 2017-04-26 |
CN101946381B (zh) | 2013-10-09 |
JP5007249B2 (ja) | 2012-08-22 |
US8389856B2 (en) | 2013-03-05 |
US20100326692A1 (en) | 2010-12-30 |
AU2009213464B2 (en) | 2013-06-20 |
JP2009195003A (ja) | 2009-08-27 |
AU2009213464A1 (en) | 2009-08-20 |
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