JP2013005636A - Grommet - Google Patents

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JP2013005636A
JP2013005636A JP2011135915A JP2011135915A JP2013005636A JP 2013005636 A JP2013005636 A JP 2013005636A JP 2011135915 A JP2011135915 A JP 2011135915A JP 2011135915 A JP2011135915 A JP 2011135915A JP 2013005636 A JP2013005636 A JP 2013005636A
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grommet
housing
lid member
opening
hole
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JP5804315B2 (en
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Makoto Kawase
誠 川瀬
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Nok Corp
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Nok Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a grommet which exhibits good sealing performance even when a certain variation inevitably occurs in dimensional accuracy of a housing and a mounting part formed in the housing.SOLUTION: A grommet comprises: a housing; a lid member closing an opening of the housing; and a grommet part made of a rubbery elastic material which is attached to a recessed mounting part formed at an end of the opening, pressed to be brought into close contact with the mounting part by mounting of the lid member to the housing, and has a through-hole into which piping connecting the inside and the outside of the housing is inserted. Chamfer-like inclined surfaces are formed at both ends of the mounting part, and flange parts each having a triangular cross-section which fit in spaces extending along the through-hole formed by the inclined surface and the lid member are provided on both sides of the grommet part.

Description

本発明は、グロメットに関するものである。
また、自動車や汎用機械等に使用されるグロメットに関する。 The present invention relates to a grommet.
Moreover, it is related with the grommet used for a motor vehicle, a general purpose machine, etc.

更に詳しくは、ハウジング内部と外部とを配管で接続する部位に使用して有益なグロメットに関する。   More particularly, the present invention relates to a grommet useful for use in a portion where the inside and outside of a housing are connected by piping.

従来、自動車や汎用機械等に使用されるグロメットとしては、図８に示す構造のものが提案された。（特許文献１）
すなわち、従来のグロメット３００は、ハウジング１００と、このハウジング１００の開口部１１０を閉塞している蓋部材２００と、開口部１１０の端部に形成された凹状の取付部１２０に装着され、蓋部材２００をハウジング１に取り付ける事により、取付部１２０に押圧密着されると共に、ハウジング１００内部に配管４００が挿通される貫通孔３１０を備える構造を備えていた。 Conventionally, as a grommet used for automobiles, general-purpose machines, etc., a structure having a structure shown in FIG. 8 has been proposed. (Patent Document 1)
That is, the conventional grommet 300 is attached to the housing 100, the lid member 200 that closes the opening 110 of the housing 100, and the concave mounting portion 120 formed at the end of the opening 110. By attaching 200 to the housing 1, the structure is provided with a through hole 310 into which the pipe 400 is inserted into the housing 100 while being pressed and adhered to the mounting portion 120.

しかし、ハウジング１００及びハウジング１００に形成される取付部１２０の寸法精度は、不可避的に一定のバラツキが生じる。   However, the dimensional accuracy of the housing 100 and the mounting portion 120 formed on the housing 100 inevitably has a certain variation.

ハウジング１００及びハウジング１００に形成される取付部１２０の寸法が小さく仕上がった場合には、図９に示す様に、グロメット３００の一部が、ハウジング１００と蓋部材２００との間隙５００にかみ込まれる様にはみ出す。
この結果、ハウジング１００内部の密封性が損なわれる。
この為、発生した間隙５００に、ＦＩＰＧ（液状ガスケット）を充填して密封性を維持する対策が採られたが、コストが嵩み、作業効率の低下を招来した。 When the dimensions of the housing 100 and the mounting portion 120 formed on the housing 100 are small, a part of the grommet 300 is caught in the gap 500 between the housing 100 and the lid member 200 as shown in FIG. Stick out.
As a result, the sealing performance inside the housing 100 is impaired.
For this reason, measures have been taken to maintain the sealing performance by filling the generated gap 500 with FIPG (liquid gasket), but the cost is increased and the working efficiency is lowered.

また、ハウジング１００及びハウジング１００に形成される取付部１２０の寸法が大きく仕上がった場合には、図１０に示す様に、グロメット３００と蓋部材２００との間に間隙６００が発生する。
この結果、図９の場合と同様に、ハウジング１００内部の密封性が損なわれると共に、コストが嵩み、作業効率の低下を招来した。 Further, when the dimensions of the housing 100 and the mounting portion 120 formed on the housing 100 are large, a gap 600 is generated between the grommet 300 and the lid member 200 as shown in FIG.
As a result, as in the case of FIG. 9, the sealing performance inside the housing 100 is impaired, the cost is increased, and the working efficiency is lowered.

特開２００３−１０９４４８号公報JP 2003-109448 A

本発明は以上の点に鑑みて、ハウジング及びハウジングに形成される取付部の寸法精度に、不可避的に一定のバラツキが生じたとしても、密封性が良好なグロメットを提供することを目的とする。   In view of the above, an object of the present invention is to provide a grommet with good sealing performance even if dimensional accuracy of a housing and a mounting portion formed on the housing inevitably has a certain variation. .

上記目的を達成するために本発明にあっては、ハウジングと、前記ハウジングの開口部を閉塞している蓋部材と、前記開口部の端部に形成された凹状の取付部に装着され、前記蓋部材を前記ハウジングに取り付ける事により、前記取付部に押圧密着されると共に、前記ハウジング内部と外部とを接続する配管が挿通される貫通孔を備えたゴム状弾性材製グロメットにおいて、前記取付部の両端部に面取り様の傾斜面を形成し、前記傾斜面と前記蓋部材とにより形成される前記貫通孔に沿って伸びる空所に適合する断面三角形状の鍔部を前記グロメットの両側に設けたことを特徴とする。   In order to achieve the above object, in the present invention, a housing, a lid member closing the opening of the housing, and a concave attachment formed at an end of the opening are mounted, In the grommet made of rubber-like elastic material provided with a through-hole through which a pipe connecting the inside and the outside of the housing is inserted while being pressed and adhered to the attachment portion by attaching a lid member to the housing. Chamfer-like inclined surfaces are formed at both ends of each of the grommets, and ridges having a triangular cross section adapted to a space extending along the through hole formed by the inclined surface and the lid member are provided on both sides of the grommet. It is characterized by that.

本発明は、以下に記載されるような効果を奏する。
請求項１記載の発明のグロメットによれば、ハウジング及びハウジングに形成される取付部の寸法精度に、不可避的に一定のバラツキが生じたとしても、密封性が良好なグロメットを提供する事が出来る。
請求項２記載の発明のグロメットによれば、グロメットの鍔部がハウジングと蓋部材との間にかみ込まれることをより効果的に阻止出来る。 The present invention has the following effects.
According to the grommet of the first aspect of the present invention, it is possible to provide a grommet having a good sealing performance even if the dimensional accuracy of the housing and the mounting portion formed on the housing inevitably has a certain variation. .
According to the grommet of the second aspect of the invention, it is possible to more effectively prevent the grommet's brim portion from being bitten between the housing and the lid member.

更に、請求項３記載の発明のグロメットによれば、ハウジング及びハウジングに形成される取付部の寸法精度のより大きなバラツキに対応が可能となる。
更に、請求項４記載の発明のグロメットによれば、ハウジング、ハウジングに形成される取付部及び蓋部材の寸法精度のより大きなバラツキに対応が可能となる。 Furthermore, according to the grommet of the invention described in claim 3, it is possible to cope with a larger variation in the dimensional accuracy of the housing and the mounting portion formed in the housing.
Furthermore, according to the grommet of the invention described in claim 4, it is possible to cope with larger variations in the dimensional accuracy of the housing, the mounting portion formed on the housing, and the lid member.

更に、請求項５記載の発明のグロメットによれば、グロメットの取り扱いが容易となると共に、良好な密封性能が維持出来る。 Furthermore, according to the grommet of the invention described in claim 5, it is easy to handle the grommet, and good sealing performance can be maintained.

本発明の第１の形態であるグロメットとハウジングと蓋部材の斜視図。The perspective view of the grommet which is the 1st form of this invention, a housing, and a cover member. 図１に示した形態が組み付けられた状態の部分拡大正面図。The partial expanded front view of the state by which the form shown in FIG. 1 was assembled | attached. 図１に示したグロメットの正面図。The front view of the grommet shown in FIG. 第２の形態に係るグロメットを図３と同様に示した図。The figure which showed the grommet which concerns on a 2nd form similarly to FIG. 第３の形態に係るグロメットを図３と同様に示した図。The figure which showed the grommet which concerns on a 3rd form similarly to FIG. 第４の形態に係るグロメットを図３と同様に示した図。The figure which showed the grommet which concerns on a 4th form similarly to FIG. 第５の形態に係るグロメットを図３と同様に示した図。The figure which showed the grommet which concerns on a 5th form similarly to FIG. 従来技術に係るグロメットとハウジングと蓋部材の斜視図。The perspective view of the grommet which concerns on a prior art, a housing, and a cover member. 図８に示す従来技術が組み付けられた状態の部分拡大正面図。The partial enlarged front view of the state in which the prior art shown in FIG. 8 was assembled | attached. 図８に示す従来技術が組み付けられた他の状態の部分拡大正面図。The partial expanded front view of the other state in which the prior art shown in FIG. 8 was assembled | attached.

以下、本発明を実施するための形態について説明する。
図１乃至図３に基づき本発明に係る第１の形態について説明する。 Hereinafter, modes for carrying out the present invention will be described.
A first embodiment according to the present invention will be described with reference to FIGS.

本発明のグロメットは、ハウジング１と、このハウジング１の開口部１１を閉塞している蓋部材２と、開口部１１の端部に形成された凹状の取付部１２に装着され、蓋部材２をハウジング１に取り付ける事により、取付部１２に押圧密着されると共に、ハウジング１内部と外部とを接続する配管４が挿通される貫通孔３１を備えたゴム状弾性材製グロメット３とより構成されている。   The grommet of the present invention is attached to the housing 1, the lid member 2 that closes the opening 11 of the housing 1, and the concave attachment portion 12 formed at the end of the opening 11. By being attached to the housing 1, it is composed of a rubber-like elastic grommet 3 provided with a through hole 31 through which a pipe 4 connecting the inside and outside of the housing 1 is inserted while being pressed and adhered to the attachment portion 12. Yes.

そして、この取付部１２の両端部には、面取り様の傾斜面１２１、１２１が形成され、この傾斜面１２１、１２１と蓋部材２とにより形成される貫通孔３１に沿って伸びる空所１２２、１２２に適合する断面三角形状の鍔部３２、３２が、グロメット３の両側に設けられている。   Chamfered inclined surfaces 121 and 121 are formed at both ends of the mounting portion 12, and a void 122 extending along the through hole 31 formed by the inclined surfaces 121 and 121 and the lid member 2, The flange portions 32, 32 having a triangular cross section conforming to 122 are provided on both sides of the grommet 3.

従って、図３に示す形状のグロメット３が、図２に示す様に、ハウジング１と、このハウジング１の開口部１１を閉塞している蓋部材２との間に装着されると、グロメット３がハウジング１と蓋部材２とに密着し、ハウジング１内への流体の流入を確実に阻止出来る。   Therefore, when the grommet 3 having the shape shown in FIG. 3 is mounted between the housing 1 and the lid member 2 closing the opening 11 of the housing 1 as shown in FIG. The housing 1 and the lid member 2 are in close contact with each other, and the inflow of fluid into the housing 1 can be reliably prevented.

特に、グロメット３が、ハウジング１の取付部１２に比べ多少大きくなった場合においても、鍔部３２、３２は、ハウジング１と蓋部材２との間にグロメット３が噛み込まれることを阻止する為、従来技術の図９に示す様なハウジング１と蓋部材２との間に間隙を生ずる問題を回避出来る。   In particular, even when the grommet 3 is slightly larger than the mounting portion 12 of the housing 1, the flange portions 32 and 32 prevent the grommet 3 from being caught between the housing 1 and the lid member 2. The problem of creating a gap between the housing 1 and the lid member 2 as shown in FIG. 9 of the prior art can be avoided.

また、逆に、グロメット３が、ハウジング１の取付部１２に比べ多少小さくなった場合においても、鍔部３２、３２は、グロメット３を両側から支える為、従来技術の図１０に示す様なハウジング１と蓋部材２との間に間隙を生ずる問題を回避出来る。   Conversely, even when the grommet 3 is slightly smaller than the mounting portion 12 of the housing 1, the flange portions 32 and 32 support the grommet 3 from both sides, so that the housing as shown in FIG. The problem of creating a gap between 1 and the lid member 2 can be avoided.

図４に基づき本発明に係る第２の形態について説明する。
第１の形態と相違する点は、鍔部３２、３２の両面に貫通孔３１に沿って伸びる軸方向リブ３３、３３を設けた点である。 A second embodiment according to the present invention will be described with reference to FIG.
The difference from the first embodiment is that axial ribs 33, 33 extending along the through holes 31 are provided on both surfaces of the flange portions 32, 32.

この事により、グロメット３の鍔部３２、３２がハウジング１と蓋部材２との間にかみ込まれることをより効果的に阻止出来る。
すなわち、リブ３３、３３が、余剰のグロメット３の鍔部３２、３２の先端側への移動を阻止する為、グロメット３がハウジング１と蓋部材２との間にかみ込まれることをより確実に回避出来ると共に、鍔部３２、３２が傾斜面１２１、１２１上に安定的に配置できる。
また、リブ３３、３３は、グロメット３がハウジング１と蓋部材２との間に圧縮された際、ハウジング１と蓋部材２との間隙を埋設する様に変形し、結果として、リブ３３、３３の形跡が判らない、図２に示す様な隙間が存在しない形に変形する。
従って、リブ３３、３３の形状は、余り大きすぎても良くない。 By this, it can prevent more effectively that the collar parts 32 and 32 of the grommet 3 are bitten between the housing 1 and the lid member 2.
That is, since the ribs 33, 33 prevent the excessive grommets 3 from moving toward the distal ends of the flanges 32, 32, the grommets 3 are more reliably engaged between the housing 1 and the lid member 2. While avoiding, the collar parts 32 and 32 can be stably arrange | positioned on the inclined surfaces 121 and 121. FIG.
Further, when the grommet 3 is compressed between the housing 1 and the lid member 2, the ribs 33 and 33 are deformed so as to embed a gap between the housing 1 and the lid member 2, and as a result, the ribs 33 and 33 are formed. It is deformed into a shape in which there is no gap as shown in FIG.
Therefore, the shape of the ribs 33 and 33 may not be too large.

図５に基づき本発明に係る第３の形態について説明する。
第１の形態と相違する点は、取付部１２と接するグロメット３の周面に周方向リブ３４を設けた点である。 A third embodiment according to the present invention will be described with reference to FIG.
The difference from the first embodiment is that a circumferential rib 34 is provided on the circumferential surface of the grommet 3 in contact with the attachment portion 12.

この事により、グロメット３は、ハウジング１及びハウジング１に形成される取付部１２、１２の寸法精度のより大きなバラツキに対応が可能となる。
すなわち、グロメット３本体に比べ、周方向リブ３４の圧縮変形が容易な為、寸法精度のバラツキをより多く吸収出来る。
周方向リブ３４は、１本で有っても良いが、グロメット３をより安定的に保持する為には、複数本存在することが望ましい。 Accordingly, the grommet 3 can cope with a larger variation in the dimensional accuracy of the housing 1 and the mounting portions 12 and 12 formed in the housing 1.
That is, as compared with the grommet 3 main body, the circumferential ribs 34 are easily compressed and deformed, so that variations in dimensional accuracy can be absorbed more.
One circumferential rib 34 may be provided, but it is desirable that a plurality of circumferential ribs 34 exist in order to hold the grommet 3 more stably.

図６に基づき本発明に係る第４の形態について説明する。
第３の形態と相違する点は、周方向リブ３４をグロメット３の全周に設けた点である。 A fourth embodiment according to the present invention will be described with reference to FIG.
The difference from the third embodiment is that circumferential ribs 34 are provided on the entire circumference of the grommet 3.

この事により、ハウジング、ハウジングに形成される取付部及び蓋部材の寸法精度のより大きなバラツキに対応が可能となる。   By this, it becomes possible to cope with larger variations in the dimensional accuracy of the housing, the mounting portion formed on the housing, and the lid member.

図７に基づき本発明に係る第５の形態について説明する。
第４の形態と相違する点は、グロメット３に金属材製の補強部材３５を埋設してある点である。 A fifth embodiment according to the present invention will be described with reference to FIG.
A difference from the fourth embodiment is that a reinforcing member 35 made of a metal material is embedded in the grommet 3.

補強部材３５は、周方向リブ３４と略同心状に埋設されており、両端部が鍔部３２、３２に向かう形に折り曲げられている。
この事により、グロメット１の剛性が高まり、グロメット１の取り扱いが容易となる。
また、リブ３３、３３は、補強部材３５が存在する為、傾斜面１２１側に沿って押し出される作用が助長される為、空所１２２の密封性が良くなる。 The reinforcing member 35 is embedded substantially concentrically with the circumferential rib 34, and both end portions are bent toward the flange portions 32, 32.
This increases the rigidity of the grommet 1 and facilitates handling of the grommet 1.
Further, since the reinforcing members 35 are present in the ribs 33 and 33, the action of being pushed out along the inclined surface 121 side is promoted, so that the sealing performance of the void 122 is improved.

本発明で使用されるゴム状弾性材製グロメット１の材質は、ＦＫＭ、シリコーンゴム、ＥＰＤＭ、ニトリルゴム、アクリルゴム、ＨＮＢＲ等の各種のゴム状弾性体を適宜選択して使用出来る。   As the material of the grommet 1 made of rubber-like elastic material used in the present invention, various rubber-like elastic bodies such as FKM, silicone rubber, EPDM, nitrile rubber, acrylic rubber, HNBR and the like can be appropriately selected and used.

また、本発明は上述の発明を実施するための最良の形態に限らず、本発明の要旨を逸脱することなくその他種々の構成を採り得ることはもちろんである。   The present invention is not limited to the best mode for carrying out the invention described above, and various other configurations can be adopted without departing from the gist of the present invention.

ハウジング内部と外部とを配管で接続する部位に使用して有益である。   It is beneficial to use it at a site where the inside and outside of the housing are connected by piping.

１ ハウジング
２ 蓋部材
３ グロメット
４ 配管
１１ 開口部
１２ 取付部
３１ 貫通孔
３２ 鍔部
３３ 軸方向リブ
３４ 周方向リブ
３５ 補強部材
１２１傾斜面 DESCRIPTION OF SYMBOLS 1 Housing 2 Lid member 3 Grommet 4 Piping 11 Opening part 12 Attachment part 31 Through-hole 32 Gutter part 33 Axial rib 34 Circumferential rib 35 Reinforcement member 121 inclined surface

Claims (5)

ハウジング（１）と、前記ハウジング（１）の開口部（１１）を閉塞している蓋部材（２）と、前記開口部（１１）の端部に形成された凹状の取付部（１２）に装着され、前記蓋部材（２）を前記ハウジング（１）に取り付ける事により、前記取付部（１２）に押圧密着されると共に、ハウジング（１）内部と外部とを接続する配管（４）が挿通される貫通孔（３１）を備えたゴム状弾性材製グロメット（３）において、
前記取付部（１２）の両端部に面取り様の傾斜面（１２１）、（１２１）を形成し、前記傾斜面（１２１）、（１２１）と前記蓋部材（２）とにより形成される前記貫通孔（３１）に沿って伸びる空所（１２２）、（１２２）に適合する断面三角形状の鍔部（３２）、（３２）を前記グロメット（３）の両側に設けたことを特徴とするグロメット。 The housing (1), the lid member (2) closing the opening (11) of the housing (1), and the concave mounting portion (12) formed at the end of the opening (11) When the lid member (2) is mounted and attached to the housing (1), the pipe (4) connecting the inside and the outside of the housing (1) is inserted through the attachment portion (12). In the rubber-like elastic grommet (3) provided with the through hole (31) to be made,
Chamfered inclined surfaces (121) and (121) are formed at both end portions of the attachment portion (12), and the penetration is formed by the inclined surfaces (121) and (121) and the lid member (2). Grommet characterized in that flanges (32) and (32) having a triangular cross section conforming to voids (122) and (122) extending along hole (31) are provided on both sides of said grommet (3). . 前記鍔部（３２）、（３２）の両面に前記貫通孔（３１）に沿って伸びる軸方向リブ（３３）、（３３）を設けたことを特徴とする請求項１記載のグロメット。   The grommet according to claim 1, wherein axial ribs (33), (33) extending along the through hole (31) are provided on both surfaces of the flanges (32), (32). 前記取付部（１２）と接する前記グロメット（３）の周面に周方向リブ（３４）を設けたことを特徴とする請求項１または２記載のグロメット。   The grommet according to claim 1 or 2, wherein a circumferential rib (34) is provided on a circumferential surface of the grommet (3) in contact with the mounting portion (12). 前記周方向リブ（３４）を前記グロメット（３）の全周に設けたことを特徴とする請求項３記載のグロメット。   The grommet according to claim 3, wherein the circumferential rib (34) is provided on the entire circumference of the grommet (3). 前記グロメット（３）に補強部材（３５）を埋設してあることを特徴とする請求項１〜４のいずれか一項に記載のグロメット。   The grommet according to any one of claims 1 to 4, wherein a reinforcing member (35) is embedded in the grommet (3).
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11056869B2 (en) 2016-08-05 2021-07-06 Harting Electric Gmbh & Co. Kg Device for leading cables through a wall orifice of a switch cabinet

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JPS57125657U (en) * 1981-01-30 1982-08-05
JPH0562552A (en) * 1991-09-05 1993-03-12 Yazaki Corp Grommet fixing structure
JPH0694134A (en) * 1992-09-09 1994-04-05 Mitsubishi Electric Corp Seal structure
JP2001069646A (en) * 1999-09-01 2001-03-16 Yazaki Corp Penetrating structure into vehicle body for wire harness
JP2001069645A (en) * 1999-09-01 2001-03-16 Yazaki Corp Structure for inserting wire harness into vehicle body
JP2002369346A (en) * 2001-06-08 2002-12-20 Toyota Industries Corp Electrical device

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Publication number Priority date Publication date Assignee Title
JPS57125657U (en) * 1981-01-30 1982-08-05
JPH0562552A (en) * 1991-09-05 1993-03-12 Yazaki Corp Grommet fixing structure
JPH0694134A (en) * 1992-09-09 1994-04-05 Mitsubishi Electric Corp Seal structure
JP2001069646A (en) * 1999-09-01 2001-03-16 Yazaki Corp Penetrating structure into vehicle body for wire harness
JP2001069645A (en) * 1999-09-01 2001-03-16 Yazaki Corp Structure for inserting wire harness into vehicle body
JP2002369346A (en) * 2001-06-08 2002-12-20 Toyota Industries Corp Electrical device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11056869B2 (en) 2016-08-05 2021-07-06 Harting Electric Gmbh & Co. Kg Device for leading cables through a wall orifice of a switch cabinet
EP3494621B1 (en) * 2016-08-05 2023-09-13 Harting Electric GmbH & Co. KG Device and method for leading cables through a wall opening

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