JPH0740264Y2 - Waterproof grommets - Google Patents
Waterproof grommetsInfo
- Publication number
- JPH0740264Y2 JPH0740264Y2 JP11351990U JP11351990U JPH0740264Y2 JP H0740264 Y2 JPH0740264 Y2 JP H0740264Y2 JP 11351990 U JP11351990 U JP 11351990U JP 11351990 U JP11351990 U JP 11351990U JP H0740264 Y2 JPH0740264 Y2 JP H0740264Y2
- Authority
- JP
- Japan
- Prior art keywords
- wall
- grommet
- head wall
- flange portion
- head
- 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
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、電線束をケースやパネル等の外壁の開口に挿
通固定させる防水グロメットに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a waterproof grommet for inserting and fixing a bundle of electric wires into an opening of an outer wall such as a case or a panel.
第７図は、自動車のエンジンルーム等に装着される電気
接続箱Ｅ′に組み付ける従来の防水グロメットＧ′を示
すものである（実開昭63−146916号）。FIG. 7 shows a conventional waterproof grommet G'assembled to an electric connection box E'mounted in the engine room of an automobile or the like (Actual No. Sho 63-146916).
該グロメットＧ′は、合成ゴムを材料として、蛇腹部28
の一方に、電線束29を挿通固定するための小径筒部30、
他方に、電気接続箱Ｅ′に固定させるフランジ部31をそ
れぞれ連成してなるものである。該フランジ部31は、上
方を矩形状、下方を半円弧状に形成し、頭壁32を除く周
壁33に、電気接続箱Ｅ′の下ケース34の切欠開口部35に
形成された突条36に対する嵌着溝37を設けたものであ
り、該フランジ部31を該切欠開口部35に圧入し、上ケー
ス38を覆設することにより、該上ケース38の下端縁39が
前記頭壁32を押圧して、シーリングを行う。なお、前記
小径筒部30と電線束29とは、図示しない粘着テープによ
り巻き付け固定される。The grommet G'is made of synthetic rubber and is made of bellows 28.
On one side, a small-diameter cylindrical portion 30 for inserting and fixing the electric wire bundle 29,
On the other hand, flanges 31 fixed to the electric junction box E'are formed in series. The flange portion 31 is formed in a rectangular shape on the upper side and a semi-circular shape on the lower side, and a ridge 36 formed on a peripheral wall 33 except the head wall 32 in a notch opening 35 of a lower case 34 of the electric junction box E ′. By fitting the flange 31 into the cutout opening 35 and covering the upper case 38, the lower end edge 39 of the upper case 38 causes the head wall 32 to move. Press to seal. The small-diameter tubular portion 30 and the electric wire bundle 29 are wound and fixed by an adhesive tape (not shown).
しかしながら、上記従来の構造にあっては、第８図〜第
９図にその組付状態を示すように、フランジ部31を切欠
開口部35に圧入する際に、側壁33aが摩擦抵抗によって
持ち上がり、頭壁32の中央に凹み40を生じてしまい、そ
の隙間41から、電気接続箱Ｅ′内に水や塵等が侵入する
という問題があった。該電気接続箱Ｅ′内には、電線束
30に接続する図示しないヒューズ配電盤等が設置されて
おり、水等の侵入によって、電気的接触不良を起こす危
険性があった。However, in the above-described conventional structure, as shown in the assembled state in FIGS. 8 to 9, when the flange portion 31 is press-fitted into the notch opening portion 35, the side wall 33a is lifted by frictional resistance, There is a problem that a recess 40 is formed in the center of the head wall 32, and water, dust or the like enters the electric junction box E ′ through the gap 41. In the electric connection box E ', a wire bundle is
A fuse switchboard (not shown) connected to 30 was installed, and there was a risk of electrical contact failure due to intrusion of water or the like.
本考案は、上記した点に鑑み、電気接続箱等の切欠開口
部にグロメットのフランジ部を圧入した際に、該フラン
ジ部の頭壁に凹みを生じることなく、良好な防水性を発
揮できる防水グロメットを提供することを目的とする。In view of the above points, the present invention is a waterproof that can exhibit good waterproofness without causing a recess in the head wall of the grommet when the flange part of the grommet is press-fitted into the cutout opening of the electric connection box or the like. Intended to provide grommets.
上記目的を達成するために、本考案は、電線挿通孔を有
する弾性グロメット本体の固定用フランジ部の側壁を下
ケース等の切欠開口部に圧入し、該フランジ部の頭壁の
外面に、上ケース等のシール面を押圧させる防水グロメ
ットにおいて、前記フランジ部の頭壁の内面の中央に、
隆起した厚肉部を形成し、該厚肉部の両側の空隙内に該
頭壁を可撓として成る構造を基本とする。In order to achieve the above-mentioned object, the present invention presses a side wall of a fixing flange portion of an elastic grommet main body having an electric wire insertion hole into a notch opening portion such as a lower case, and an upper surface of the head wall of the flange portion. In a waterproof grommet that presses the sealing surface of the case etc., in the center of the inner surface of the head wall of the flange portion,
It is based on a structure in which a thick wall portion that is raised is formed, and the head wall is flexible in the voids on both sides of the thick wall portion.
フランジ部の頭壁の内面に、隆起した厚肉部を形成した
から、切欠開口部への圧入に際して該フランジ部の側壁
に持ち上げ方向の摩擦力が作用しても、該肉厚部が剛性
を発揮して頭壁の凹みを防ぐ。また、頭壁の外面に、上
ケース等のシール面を押圧させた際に、該頭壁が該厚肉
部の両側の空隙内に撓む。従って、良好なシーリングが
可能となる。Since the raised thick portion is formed on the inner surface of the head wall of the flange portion, even when a frictional force in the lifting direction acts on the side wall of the flange portion when press-fitting into the notch opening, the thick portion does not have rigidity. Demonstrate and prevent dents on the head wall. Further, when the sealing surface of the upper case or the like is pressed against the outer surface of the head wall, the head wall bends into the voids on both sides of the thick portion. Therefore, good sealing becomes possible.
第１図は、本考案に係る防水グロメットＧを示すもので
あり、図で、１は、合成ゴムにて形成された弾性グロメ
ット本体、２は、該グロメット本体内に嵌着される合成
樹脂製の剛性インナー部材、３は、電気接続箱Ｅの合成
樹脂製下ケース、４は、同じく上ケースを示す。また、
第２図は、前記グロメット本体１を示す第１図のＢ−Ｂ
断面図、第３図は同じくＡ−Ａ断面図である。FIG. 1 shows a waterproof grommet G according to the present invention, in which 1 is an elastic grommet body made of synthetic rubber and 2 is a synthetic resin fitted in the grommet body. 3 is a synthetic resin lower case of the electric junction box E, and 4 is an upper case thereof. Also,
FIG. 2 is a BB line of FIG. 1 showing the grommet body 1.
The sectional view and FIG. 3 are also AA sectional views.
該グロメット本体１は、蛇腹部５の一方に、電線挿通孔
６を有する小径筒部７を連成し、該蛇腹部５の他方に、
上方を矩形状、下方を半円弧状とした固定用フランジ部
８を連成し、該フランジ部８の頭壁９を除く外周壁10
に、下ケース３のＵ字状切欠開口部11の周壁12に形成さ
れたガイド溝13及び突条14に対する嵌合用突条15及び嵌
着溝16を設け、該フランジ部８の内周壁17に、剛性イン
ナー部材２の環部18に設けられた嵌合用突条19に対する
係合溝20を設け、該頭壁９の外面9aに、上ケース４の突
出シール壁21に設けられたパッキン22に対する密着用突
条23を設け、さらに、該頭壁９の内面側に、山型に隆起
した厚肉部24を形成して成るものである。The grommet body 1 has a small-diameter cylindrical portion 7 having an electric wire insertion hole 6 connected to one of the bellows portions 5, and the other of the bellows portions 5 to the other.
An outer peripheral wall 10 except a head wall 9 of the flange portion 8 is formed by connecting fixing flange portions 8 each having a rectangular upper portion and a semicircular lower portion.
Is provided with a fitting projection 15 and a fitting groove 16 for the guide groove 13 and the projection 14 formed in the peripheral wall 12 of the U-shaped notch opening 11 of the lower case 3, and the inner peripheral wall 17 of the flange 8 is provided with the fitting groove 15. An engaging groove 20 for the fitting projection 19 provided on the ring portion 18 of the rigid inner member 2 is provided, and a packing 22 provided on the protruding sealing wall 21 of the upper case 4 is provided on the outer surface 9a of the head wall 9. A protrusion 23 for contact is provided, and a thick portion 24 protruding in a mountain shape is formed on the inner surface side of the head wall 9.
本考案は、該厚肉部24を有する構成を特徴とし、該厚肉
部24は、頭壁９の中央に円弧状の頂点24aを有してい
る。なお、厚肉部24の形状は、山型に限らず、中央に頂
点（24a）を有するアーチ状であってもよい。The present invention is characterized by having the thick portion 24, and the thick portion 24 has an arc-shaped apex 24a at the center of the head wall 9. The shape of the thick portion 24 is not limited to the mountain shape, but may be an arch shape having a vertex (24a) at the center.
また、前記剛性インナー部材２（第１図参照）は、グロ
メット本体１のフランジ部８の内壁面17に沿った形状の
環部18を有し、該環部18に、前記嵌合用突条19と、下ケ
ース３に対する係止片26と安定板27とを設けてある。Further, the rigid inner member 2 (see FIG. 1) has a ring portion 18 having a shape along the inner wall surface 17 of the flange portion 8 of the grommet body 1, and the fitting protrusion 19 is provided on the ring portion 18. Also, a locking piece 26 and a stabilizing plate 27 for the lower case 3 are provided.
第４図は、グロメット本体１に剛性インナー部材２を嵌
着した状態を示す第１図のＡ−Ａ断面相当図であり、グ
ロメット本体１の頭壁９の厚肉部24は、その頂点24aを
剛性インナー部材２の環部18の天壁18aに当接されて、
外側に向けてややアーチ状に膨出する。ここで該頭壁９
と天壁18aとの間には、両側に空隙25ができている。FIG. 4 is a view corresponding to the AA cross section of FIG. 1 showing a state in which the rigid inner member 2 is fitted to the grommet body 1, and the thick portion 24 of the head wall 9 of the grommet body 1 has its apex 24a. Is brought into contact with the top wall 18a of the ring portion 18 of the rigid inner member 2,
A little arched bulge toward the outside. Here the head wall 9
A space 25 is formed on both sides between the upper wall 18a and the ceiling wall 18a.
そして、この状態でグロメット本体１を下ケース３（第
１図参照）の切欠開口部11に圧入し、上ケース４を覆設
することにより、第５図〜第６図に示すように、該グロ
メット本体１の頭壁９は、上ケース４の突出シール壁21
に押圧されて空隙25内に撓み、頭壁外面9aと突条23とが
突出シール壁21と平行になってシール壁21とパッキン22
とに均一に密着する。従って、頭壁９に従来のような凹
みが発生せず、良好なシーリングが可能となる。Then, in this state, the grommet main body 1 is press-fitted into the notch opening 11 of the lower case 3 (see FIG. 1) and the upper case 4 is covered, so that as shown in FIGS. The head wall 9 of the grommet body 1 is the protruding seal wall 21 of the upper case 4.
The head wall outer surface 9a and the ridge 23 are parallel to the protruding seal wall 21 and are pushed by the seal wall 21 and the packing 22.
And evenly adhere to. Therefore, the head wall 9 is not dented as in the conventional case, and good sealing is possible.
なお、上記実施例のような剛性インナー部材２を用いな
い場合においても、グロメット本体１を切欠開口部11に
圧入する際にフランジ部８の側壁10a（第５図参照）に
作用する持ち上げ力ｆに対して、該厚肉部24が剛性を発
揮して頭壁９の凹みを防ぐから、良好なシーリングが行
われる。Even when the rigid inner member 2 as in the above embodiment is not used, the lifting force f acting on the side wall 10a (see FIG. 5) of the flange portion 8 when the grommet body 1 is press-fitted into the notch opening portion 11 is used. On the other hand, since the thick portion 24 exerts rigidity and prevents the head wall 9 from being depressed, a good sealing is performed.
以上の如くに、考案によれば、グロメット本体のフラン
ジ部の頭壁に形成された厚肉部が、グロメット装着時に
おける該頭壁の変形を防ぐから、防水性が向上し、電気
接続箱等を水や塵の侵入から護って、電気的接触不良を
未然に防止することができる。As described above, according to the invention, the thick wall portion formed on the head wall of the flange portion of the grommet body prevents the head wall from being deformed when the grommet is attached, so that the waterproof property is improved, and the electrical junction box, etc. It is possible to prevent the electric contact failure from occurring before it is protected from intrusion of water or dust.
第１図は本考案の一実施例を示す分解斜視図、 第２図はグロメット本体を示す第１図のＢ−Ｂ断面図、 第３図は同じく第１図のＡ−Ａ断面図、 第４図はグロメット本体に剛性インナー部材を装着した
状態を示す第１図のＡ−Ａ相当断面図、 第５図は電気接続箱への組付状態を示すＡ−Ａ相当断面
図、 第６図は同じくＢ−Ｂ相当断面図、 第７図は従来例を示す分解斜視図、 第８図は同じく組付状態を示す第７図の矢視Ｃ相当正面
図、 第９図は同じく第７図のＤ−Ｄ相当断面図である。 １…グロメット本体、２…剛性インナー部材、３…下ケ
ース、４…上ケース、６…電線挿通孔、８…固定用フラ
ンジ部、９…頭壁、9a…外面、10a…側壁、11…切欠開
口部、17…内周壁、21…突出シール壁、24…厚肉部、25
…空隙、Ｇ…防水グロメット。FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line BB of FIG. 1 showing a grommet body, and FIG. 3 is a sectional view taken along the line AA of FIG. FIG. 4 is a sectional view corresponding to AA in FIG. 1 showing a state where a rigid inner member is attached to the grommet main body, and FIG. 5 is a sectional view corresponding to AA showing an assembled state in an electric junction box, and FIG. Is also a sectional view taken along line BB, FIG. 7 is an exploded perspective view showing a conventional example, FIG. 8 is a front view equivalent to view C of FIG. 7 showing the assembled state, and FIG. 9 is also FIG. 6 is a sectional view corresponding to DD of FIG. DESCRIPTION OF SYMBOLS 1 ... Grommet main body, 2 ... Rigid inner member, 3 ... Lower case, 4 ... Upper case, 6 ... Wire insertion hole, 8 ... Fixing flange part, 9 ... Head wall, 9a ... Outer surface, 10a ... Side wall, 11 ... Notch Opening, 17 ... Inner peripheral wall, 21 ... Protruding seal wall, 24 ... Thick wall portion, 25
… Voids, G… Waterproof grommets.
Claims (2)
固定用フランジ部の側壁を下ケース等の切欠開口部に圧
入し、該フランジ部の頭壁の外面に、上ケース等のシー
ル面を押圧させる防水グロメットにおいて、前記フラン
ジ部の頭壁の内面の中央に、隆起した厚肉部を形成し、
該厚肉部の両側の空隙内に該頭壁を可撓として成ること
を特徴とする防水グロメット。1. A side wall of a fixing flange portion of an elastic grommet body having an electric wire insertion hole is press-fitted into a notch opening portion of a lower case or the like, and a sealing surface of an upper case or the like is pressed against an outer surface of a head wall of the flange portion. In the waterproof grommet to be formed, in the center of the inner surface of the head wall of the flange portion, to form a raised thick portion,
A waterproof grommet, characterized in that the head wall is flexible in the voids on both sides of the thick portion.
接する剛性インナー部材を嵌着させる請求項（１）記載
の防水グロメット。2. The waterproof grommet according to claim 1, wherein a rigid inner member that abuts against the thick portion is fitted on an inner wall of the flange portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11351990U JPH0740264Y2 (en) | 1990-10-31 | 1990-10-31 | Waterproof grommets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11351990U JPH0740264Y2 (en) | 1990-10-31 | 1990-10-31 | Waterproof grommets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0472424U JPH0472424U (en) | 1992-06-25 |
| JPH0740264Y2 true JPH0740264Y2 (en) | 1995-09-13 |
Family
ID=31861116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11351990U Expired - Lifetime JPH0740264Y2 (en) | 1990-10-31 | 1990-10-31 | Waterproof grommets |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0740264Y2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3309065B2 (en) * | 1997-08-22 | 2002-07-29 | 本田技研工業株式会社 | Grommets for cable mounting |
| JP3567842B2 (en) * | 2000-03-03 | 2004-09-22 | 住友電装株式会社 | Grommet |
| US7102080B2 (en) | 2002-12-09 | 2006-09-05 | Yazaki Corporation | Grommet, water-stop structure of wire harness and method of producing wire harness |
| US6977340B2 (en) | 2002-12-09 | 2005-12-20 | Yazaki Corporation | Grommet and grommet-mounting structure |
| JP4490784B2 (en) * | 2004-10-26 | 2010-06-30 | 矢崎総業株式会社 | Waterproof grommet mounting structure and electrical junction box equipped with the same |
| JP5640424B2 (en) * | 2010-03-26 | 2014-12-17 | 株式会社デンソー | Power converter |
| KR101545404B1 (en) * | 2013-12-04 | 2015-08-18 | 엘에스산전 주식회사 | Electric vehicle charger |
| JP6576842B2 (en) * | 2016-01-21 | 2019-09-18 | 矢崎総業株式会社 | Waterproof structure for electrical junction box and electrical junction box |
| JP6868502B2 (en) * | 2017-08-10 | 2021-05-12 | 古河電気工業株式会社 | Electrical junction box |
-
1990
- 1990-10-31 JP JP11351990U patent/JPH0740264Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0472424U (en) | 1992-06-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |