JP2518879Y2 - Grommet waterproof structure for wire harness - Google Patents
Grommet waterproof structure for wire harnessInfo
- Publication number
- JP2518879Y2 JP2518879Y2 JP1990020756U JP2075690U JP2518879Y2 JP 2518879 Y2 JP2518879 Y2 JP 2518879Y2 JP 1990020756 U JP1990020756 U JP 1990020756U JP 2075690 U JP2075690 U JP 2075690U JP 2518879 Y2 JP2518879 Y2 JP 2518879Y2
- Authority
- JP
- Japan
- Prior art keywords
- wire bundle
- electric wire
- grommet
- cushion material
- wire harness
- 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
- Insulated Conductors (AREA)
- Installation Of Indoor Wiring (AREA)
- Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
Description
【考案の詳細な説明】 「産業上の利用分野」 本考案は、自動車用ワイヤハーネスを車体の隔壁部分
を貫通して配索するとき、ワイヤハーネスの電線束を中
心部分に通して、その隔壁に取着するワイヤハーネス用
グロメットの止水構造に関するものである。[Detailed Description of the Invention] "Industrial field of application" The present invention relates to a case where when a wire harness for an automobile is routed through a partition wall portion of a vehicle body, a wire bundle of the wire harness is passed through a central portion of the partition wall. The present invention relates to a water blocking structure of a grommet for a wire harness attached to.
「従来の技術」 ワイヤハーネス用グロメットの電線束部分の止水構造
は、実開昭63-37027号公報のように、その電線束部分に
膨潤剤を充填して線間間隙を塞いだり、或は、その電線
束部分に高発泡ポリウレタン等のシール材を充填して硬
化させ線間空隙を塞いで止水する手段が多く採用されて
いる。"Prior Art" The water blocking structure of the wire bundle part of the wire harness grommet is such that the wire bundle part is filled with a swelling agent to close the gap between wires, as disclosed in Japanese Utility Model Laid-Open No. Sho 63-37027. In many cases, a means for filling the wire bundle portion with a sealing material such as high-foamed polyurethane and curing it to close the inter-wire space to stop the water is adopted.
「考案が解決しようとする課題」 以上の従来手段は、止水手段として簡易に施せるの
で、施工実用性を有するものの、そのシール材や膨潤剤
が線間空隙に充分に滲透しない状態で固化したり膨潤す
る現象が多く発生し、確実な止水効果が得られない難点
がある。"Problems to be solved by the device" Although the above conventional means can be easily applied as a water stopping means, it has practical utility, but it is solidified in a state where the sealing material and the swelling agent do not sufficiently permeate into the space between the wires. There are many phenomena such as swelling and swelling, and there is a drawback that a reliable water-stopping effect cannot be obtained.
一方、特殊高品位のシール材を用いたり、それ等シー
ル材の加熱処理や特殊圧入装置の導入によって、前記の
難点を解消することは技術的に可能なものの、ワイヤハ
ーネスの量産ラインにおける加工コストと作業性の観点
から実用性がなく、作業簡便・低コストにして的確に止
水する止水手段の開発が、当該分野で要求されている。On the other hand, although it is technically possible to solve the above-mentioned problems by using special high-quality seal materials, heat treatment of such seal materials, and the introduction of special press-fitting equipment, the processing cost in the wire harness mass production line In view of workability, there is a demand in the field to develop a water-stopping means that is not practical, is simple in operation, low in cost, and accurately stops water.
本考案は、以上の従来手段の難点を解消し、技術ニー
ズに応える新規の止水構造を提供するものである。The present invention solves the above-mentioned drawbacks of the conventional means and provides a new water-stop structure that meets technical needs.
「課題を解決するための手段」 以上の技術課題を解決する本考案は、グロメットの電
線束挿着孔に挿着固定するワイヤハーネス用電線束にお
いて、 連続気泡性樹脂または半連続気泡性樹脂からなる均一
厚さにして平坦表面の板状のクッシヨン材を、巻き寿し
状に巻き込むと共に、線間間隙を設けて、該クッシヨン
材の表面に電線を個別に押え込み埋設した電線束からな
り、該電線束をグロメットの電線束挿着孔に挿着固定す
ると共に、該電線束の気泡群と空隙および該電線束の外
周空隙に、シール材を充填・固化したことを特徴とする
止水構造」になっている。なお、前記のクッシヨン材と
しては、例えば連続気泡性樹脂のポリウレタンまたはウ
レタン、半連続気泡性樹脂のポリウレタンまたはウレタ
ンが使用される。[Means for Solving the Problems] The present invention which solves the above technical problems is an electric wire bundle for a wire harness that is inserted and fixed in an electric wire bundle insertion hole of a grommet. The plate-shaped cushion material having a uniform thickness and having a flat surface is wound into a roll-like shape, and an electric wire is individually embedded and embedded in the surface of the cushion material by providing a space between the wires and embedded. The bundle is inserted and fixed in the wire bundle insertion hole of the grommet, and a sealing material is filled and solidified in the air bubble group and the void of the wire bundle and the outer circumferential void of the wire bundle. " Has become. As the cushion material, for example, polyurethane or urethane, which is an open-cell resin, or polyurethane or urethane, which is a semi-open-cell resin, is used.
「作用」 以上の構成の本考案のワイヤハーネス用グロメットの
止水構造は、グロメットに挿着した電線群が、連続気泡
性樹脂または半連続気泡性樹脂のクッシヨン材に、個別
に埋め込まれると共に、そのクッシヨン材が介在する線
間間隔を有しているので、電線束の横断面は多泡質にし
て無用の空隙が少ない形状を呈しており、注入されたシ
ール材が、該クッシヨン材の毛細管吸液作用によって、
気泡群や残存空隙に速やかにして均一かつ充分に浸入し
て充填し固化されるので、グロメットの当該部分は確実
に止水される。[Operation] In the waterproof structure of the grommet for a wire harness of the present invention having the above configuration, the wire group inserted into the grommet is individually embedded in the cushion material of the open-cell resin or the semi-cell foam, and Since the cushion material has a space between the wires, the cross section of the electric wire bundle has a shape with a large amount of foam and has a small number of unnecessary voids, and the injected sealing material is a capillary tube of the cushion material. By absorbing liquid,
Since the bubbles and remaining voids quickly and evenly and sufficiently infiltrate and are filled and solidified, the part of the grommet is surely stopped.
そして、以上の止水作用をなすクッシヨン材は、汎用
性を有して量産され、多用途に用いられる通常の連続気
泡性樹脂または半連続気泡性樹脂の平坦板状物を、任意
サイズにカットして、そのまま電線径に関係なく使用で
きるので、グロメットの止水対策が簡便にして低コスト
にできる。And, the cushioning material that has the above-mentioned water-stopping function has a versatility and is mass-produced, and cuts a flat plate-like material of an ordinary open-cell resin or semi-open-cell resin used for various purposes into an arbitrary size. Since it can be used as it is regardless of the electric wire diameter, it is possible to make the grommet waterproofing measures simple and low in cost.
「実施例」 以下、実施例に基づいて詳しく説明する。まづ、第一
実施例を示す第１図を参照して、グロメット１の電線束
挿着孔２に貫通挿着する電線束３において、電線束３の
電線群４は、連続気泡性樹脂（この実施例は発泡ポリウ
レタン）からなり、「巻寿し」状をなす均一厚さにして
平坦表面の板状のクッシヨン材５に巻き込まれて埋め込
まれ、一本づつ個別に線間間隙を有して渦巻状に配列さ
れると共に、外周をクッシヨン材５の端部で包み込んだ
円形断面の電線束３に形成されている。"Example" Hereinafter, a detailed description will be given based on examples. First, referring to FIG. 1 showing the first embodiment, in the electric wire bundle 3 which is inserted through the electric wire bundle insertion hole 2 of the grommet 1, the electric wire group 4 of the electric wire bundle 3 has an open-cell resin ( This embodiment is made of polyurethane foam and is wound and embedded in a plate-shaped cushion material 5 having a flat surface with a uniform thickness in the form of a "rolling sushi". The electric wire bundles 3 are arranged in a spiral shape, and the outer circumference of the electric wire bundle 3 is wrapped with the end portions of the cushion material 5 to form an electric wire bundle 3 having a circular cross section.
そして、この電線束３は電線束挿着孔２に、外周部分
を圧縮するようにして圧入挿着されると共に、電線４を
埋め込んだクッシヨン材５の気泡群と電線群４周辺の残
存空隙、および電線束３の外周部位にシール材が注入さ
れて充填・固化されており、電線束３と電線束３を挿着
したグロメット１の電線束挿着孔２は、それ等の前後方
向に水分の通過を許容しない止水構造に形成されてい
る。The electric wire bundle 3 is press-fitted and inserted into the electric wire bundle insertion hole 2 so as to compress the outer peripheral portion thereof, and the group of bubbles of the cushion material 5 in which the electric wires 4 are embedded and the remaining voids around the electric wire group 4, Also, the sealant is injected into the outer peripheral portion of the electric wire bundle 3 so as to be filled and solidified, and the electric wire bundle 3 and the electric wire bundle insertion hole 2 of the grommet 1 into which the electric wire bundle 3 is inserted have moisture in the front and rear directions thereof. It has a waterproof structure that does not allow the passage of water.
詳しくは、電線束３とその止水構造は、以下の手段に
よって成形されている。即ち、第２図参照、この実施例
の連続気泡性樹脂のクッシヨン材５は片面接着面（接着
剤を予め塗布した接着面）になっており、第２図（Ａ）
のように拡げて平らにしたクッシヨン材５の接着面に、
電線４が所要の間隔を有して並列に配列されて接着され
る。そして、第２図（Ｂ）のように、電線群４を接着し
たクッシヨン材５を、軽く押え込みながら「巻寿し」状
に巻き込み、電線４のそれぞれをクッシヨン材５に埋め
込んで円形外周の電線束３に形成され、電線群４はクッ
シヨン材５の渦巻きに沿って間隔を有して一本づつ順次
配列されると共に、クッシヨン材５の端部を巻回して外
周が形成される。Specifically, the wire bundle 3 and its water blocking structure are formed by the following means. That is, refer to FIG. 2, the cushion material 5 of the open-cell resin of this embodiment has a single-sided adhesive surface (adhesive surface to which adhesive has been applied in advance), and FIG.
On the adhesive surface of the cushion material 5 that is spread and flattened like
The electric wires 4 are arranged in parallel with a required space and bonded. Then, as shown in FIG. 2 (B), the cushion material 5 to which the electric wire group 4 is adhered is rolled up in a "rolling sushi" shape while being lightly pressed, and each of the electric wires 4 is embedded in the cushion material 5 to form a circular bundle of electric wires. 3, the wire groups 4 are sequentially arranged one by one along the spiral of the cushion material 5 at intervals, and the outer periphery is formed by winding the end portion of the cushion material 5.
そして、第２図（Ｃ）参照、以上の電線束３がグロメ
ット１の電線束挿着孔２に軽く圧入しながら挿着され、
その電線束挿着孔２とワイヤハーネス６にテーピング８
が施されて電線束３の挿着姿勢が固定され、しかるの
ち、グロメット１の開口部側からシール材７が注入さ
れ、そのシール材７の充填・固化によって前記の止水構
造が形成される。Then, as shown in FIG. 2 (C), the above wire bundle 3 is inserted into the wire bundle insertion hole 2 of the grommet 1 while being lightly pressed,
Taping 8 to the wire bundle insertion hole 2 and the wire harness 6
Then, the insertion posture of the electric wire bundle 3 is fixed, and thereafter, the sealing material 7 is injected from the opening side of the grommet 1, and the water blocking structure is formed by filling and solidifying the sealing material 7. .
つぎに、第３図を参照して本考案の第二実施例を説明
する。この第３図実施例は中心に太線の幹電線4Aを有
し、その幹電線4Aの外側に電線４を有する電線束３の止
水構造を示したもので、第３図（Ａ）〜（Ｃ）のよう
に、前記実施例と同一のクッシヨン材５を幹電線4Aに巻
き寿し状に巻き付けて芯体９になし、その芯体９の外周
に電線群４を線間間隔を設けて配列し、さらに、その上
から芯体９の下半部分の外周にテープ巻き10を施して軽
く締め付けられ、第３図（Ｅ）のように、幹電線4Aに巻
き付けたクッシヨン材５の外周に、線間間隔を有する電
線群４がテープ巻き10の巻き圧力によって押え込まれ、
クッシヨン材５に埋め込まれた状態になって電線束３が
形成されている。Next, a second embodiment of the present invention will be described with reference to FIG. This embodiment shown in FIG. 3 shows a water blocking structure of a wire bundle 3 having a thick trunk electric wire 4A at the center and an electric wire 4 outside the trunk electric wire 4A. As in C), the same cushion material 5 as in the above embodiment is wound around the trunk electric wire 4A in a sushi shape to form the core body 9, and the wire group 4 is arranged on the outer periphery of the core body 9 with a space between the wires. Then, from above, tape winding 10 is applied to the outer circumference of the lower half of the core body 9 and lightly tightened, and as shown in FIG. The wire group 4 having a space between the wires is pressed by the winding pressure of the tape winding 10,
The electric wire bundle 3 is formed so as to be embedded in the cushion material 5.
そして、この電線束３をグロメット１の電線束挿着孔
２に挿着し、第１図実施例の第２図（Ｃ）と同様に、テ
ーピング８によってその挿着姿勢が固定されると共に、
グロメット１の開口部からクッシヨン材５が露出してい
る電線束３にシール材７が注入されて充填・固化され、
電線束３の止水構造が形成されている。Then, the electric wire bundle 3 is inserted into the electric wire bundle insertion hole 2 of the grommet 1, and the insertion posture is fixed by the taping 8 in the same manner as in FIG. 2C of the embodiment shown in FIG.
The sealing material 7 is injected from the opening of the grommet 1 into the electric wire bundle 3 in which the cushion material 5 is exposed, filled and solidified,
The water blocking structure of the wire bundle 3 is formed.
以上の第一・第二実施例は前記の作用が存在するの
で、電線束３を挿着したグロメット１の電線束挿着孔２
の部位は、気泡や空隙が存在しない水密状態となり、電
線束挿着孔２の前後方向の水分の浸入通過が的確に防止
される。そして、その防水作用がクッシヨン材５の巻き
込み介着とシール材７の通常の注入手法によって簡便に
達成することができる。Since the above-mentioned first and second embodiments have the above-mentioned effects, the wire bundle insertion hole 2 of the grommet 1 into which the wire bundle 3 is inserted is attached.
The portion is in a watertight state in which there are no air bubbles or voids, and the penetration of water in the front-back direction of the wire bundle insertion hole 2 is accurately prevented. The waterproofing effect can be easily achieved by the inclusion of the cushion material 5 and the usual method of injecting the sealing material 7.
なお、前記第一第二実施例に使用したシール材７は、
「日本メクトロン株式会社製の半硬質ポリウレタンフオ
ーム」であり、前記の従来手段のシール材と同一のもの
である。The sealing material 7 used in the first and second embodiments is
It is a "semi-rigid polyurethane foam made by Nippon Mektron Co., Ltd." and is the same as the above-mentioned conventional sealing material.
「考案の効果」 以上の説明のとおり、本考案のワイヤハーネス用グロ
メットの止水構造は、確実な止水性能を有し、その止水
性能が、簡便にして低コストにできる施工によって、ワ
イヤハーネスの量産性を阻害することなく達成できる実
用性を有し、当該分野の技術要求に応える効果がある。[Effect of the Invention] As described above, the waterproof structure of the grommet for a wire harness of the present invention has a reliable waterproof performance, and the waterproof performance can be easily and inexpensively constructed by the construction. It has the practicality that can be achieved without impeding the mass productivity of harnesses, and is effective in meeting the technical requirements of the field.
【図面の簡単な説明】 第１図：本考案第一実施例の止水構造を示し、（Ａ）は
その正面図、（Ｂ）は（Ａ）のAA断面拡大図、第２図、
第１図実施例の加工手段を示し、（Ａ）（Ｂ）はその加
工手順を示す斜視図、（Ｃ）はシール材注入状態を示す
正面図、第３図：本考案第二実施例の止水構造を示し、
（Ａ）（Ｂ）（Ｃ）はその加工手順を示す斜視図、
（Ｄ）は（Ｂ）のBB断面拡大図、（Ｅ）は（Ｃ）のCC断
面拡大図 主な符号、1:グロメット、2:電線束挿着孔、3:電線束、
4:電線、4A:幹電線、5:クッシヨン材、6:ワイヤハーネ
ス、7:シール材、8:テーピング、9:芯体、10:テープ巻
きBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1: A water blocking structure of a first embodiment of the present invention, (A) is a front view thereof, (B) is an enlarged sectional view taken along the line AA of (A), FIG.
FIG. 1 shows the processing means of the embodiment, (A) and (B) are perspective views showing the processing procedure, (C) is a front view showing the state of injecting a sealing material, and FIG. 3: Second embodiment of the present invention Shows a water-stop structure,
(A) (B) (C) is a perspective view showing the processing procedure,
(D) is an enlarged view of BB section of (B), (E) is an enlarged view of CC section of (C) Main symbols: 1: grommet, 2: wire bundle insertion hole, 3: wire bundle,
4: Wire, 4A: Trunk wire, 5: Cushion material, 6: Wire harness, 7: Seal material, 8: Taping, 9: Core body, 10: Tape winding
Claims (1)
らなる均一厚さにして平坦表面の板状のクッシヨン材
を、巻き寿し状に巻き込むと共に、線間間隙を設けて、
該クッシヨン材の表面に電線を個別に押え込み埋設した
電線束からなり、該電線束をグロメットの電線束挿着孔
に挿着固定すると共に、該電線束の気泡群と空隙および
該電線束の外周空隙に、シール材を充填・固化した構造
を特徴とするワイヤハーネス用グロメットの止水構造。1. A plate-shaped cushion material having a uniform thickness and made of an open-cell resin or a semi-open-cell resin is wound in a roll-like shape, and a space between lines is provided.
It consists of an electric wire bundle in which electric wires are individually pressed and embedded on the surface of the cushion material, and the electric wire bundle is inserted and fixed in an electric wire bundle insertion hole of a grommet, and a bubble group and a void of the electric wire bundle and an outer periphery of the electric wire bundle. A grommet waterproof structure for wire harnesses, characterized by a structure in which a sealing material is filled and solidified in the voids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990020756U JP2518879Y2 (en) | 1990-03-01 | 1990-03-01 | Grommet waterproof structure for wire harness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990020756U JP2518879Y2 (en) | 1990-03-01 | 1990-03-01 | Grommet waterproof structure for wire harness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03112984U JPH03112984U (en) | 1991-11-19 |
| JP2518879Y2 true JP2518879Y2 (en) | 1996-11-27 |
Family
ID=31523842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990020756U Expired - Lifetime JP2518879Y2 (en) | 1990-03-01 | 1990-03-01 | Grommet waterproof structure for wire harness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2518879Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0179327U (en) * | 1987-11-13 | 1989-05-29 |
-
1990
- 1990-03-01 JP JP1990020756U patent/JP2518879Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03112984U (en) | 1991-11-19 |
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