JP3174167U - Sealing device - Google Patents

Sealing device Download PDF

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JP3174167U
JP3174167U JP2011007651U JP2011007651U JP3174167U JP 3174167 U JP3174167 U JP 3174167U JP 2011007651 U JP2011007651 U JP 2011007651U JP 2011007651 U JP2011007651 U JP 2011007651U JP 3174167 U JP3174167 U JP 3174167U
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sealing device
insertion member
lip
opening
sealing
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範之 新保
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Nok Corp
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Nok Corp
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Abstract

【課題】本考案は、取り扱いが容易で、密封性が良好な密封装置を提供することである。
【解決手段】開口を有するエンジンヘッドカバーと、前記開口に挿通する挿通部材との間を密封する密封装置において、前記開口側に保持され、前記挿通部材の外周面に密封接触するゴム状弾性材製の主リップと、前記主リップと一体化され、前記挿通部材の外周面に形成された環状溝内にその先端部が位置する様に配置された補助リップとを備えたシール部材を有することを特徴としている。
【選択図】図１An object of the present invention is to provide a sealing device that is easy to handle and has good sealing performance.
A sealing device that seals between an engine head cover having an opening and an insertion member that is inserted into the opening, and is made of a rubber-like elastic material that is held on the opening side and that is in sealing contact with the outer peripheral surface of the insertion member. And a seal member provided with an auxiliary lip that is integrated with the main lip and is disposed in an annular groove formed on an outer peripheral surface of the insertion member so that a tip end portion thereof is positioned. It is a feature.
[Selection] Figure 1

Description

本考案は、密封装置に関する。
また、本考案は、シリンダヘッドのエンジンヘッドカバーに設けられた開口と、この開口に挿通されるインジェクションパイプである挿通部材との間の隙間をシールする密封装置に関するものである。 The present invention relates to a sealing device.
The present invention also relates to a sealing device that seals a gap between an opening provided in an engine head cover of a cylinder head and an insertion member that is an injection pipe inserted through the opening.

従来、内燃機関においては、インジェクションパイプ挿入用の円筒孔が形成されている。
このような構成においては、シリンダヘッドカバー内のブローバイガスを外部に対してシールするため、インジェクションパイプとシリンダヘッドカバーとの間にはシール部材が装着される。 Conventionally, in an internal combustion engine, a cylindrical hole for inserting an injection pipe is formed.
In such a configuration, a seal member is mounted between the injection pipe and the cylinder head cover in order to seal the blow-by gas in the cylinder head cover to the outside.

そして、この種の密封装置としては、たとえば、図３に示すものがあった。（特許文献１）
この種密封装置は、開口１１０を有するエンジンヘッドカバー１００と、この開口１１０に挿通するインジェクションパイプである挿通部材２００との間を密封する密封装置であって、開口１１０側に保持され、挿通部材２００の外周面に密封接触するゴム状弾性材製の主リップ３１０と、この主リップ３１０と一体化され、挿通部材２００の外周面に密封接触するゴム状弾性材製の補助リップ３２０とを備えたシール部材３００とにより構成されている。 An example of this type of sealing device is shown in FIG. (Patent Document 1)
This type of sealing device is a sealing device that seals between an engine head cover 100 having an opening 110 and an insertion member 200 that is an injection pipe inserted through the opening 110, and is held on the opening 110 side. A main lip 310 made of rubber-like elastic material that comes into sealing contact with the outer peripheral surface of the rubber member, and an auxiliary lip 320 made of rubber-like elastic material that is integrated with the main lip 310 and comes into contact with the outer peripheral surface of the insertion member 200. The seal member 300 is configured.

しかし、この種密封装置においては、補助リップ３２０が挿通部材２００の外周面に密接する事により、ゴム状弾性材製ではあるが、エンジンヘッドカバー１００とインジェクションパイプである挿通部材２００との間の大きな取付偏心を許容する事が難しく、組立て作業を悪化させる欠点があった。   However, in this type of sealing device, since the auxiliary lip 320 is in close contact with the outer peripheral surface of the insertion member 200, it is made of a rubber-like elastic material, but a large gap between the engine head cover 100 and the insertion member 200 that is an injection pipe. It was difficult to allow mounting eccentricity, and there was a drawback that the assembly work was worsened.

また、組み立て時（シール部材３００にインジェクタを通す工程時）においては、リップ裂け、リップ傷が発生しない様に繊細な作業が要求される欠点が有った。
更に、シール部材３００の素材がゴム状弾性材であるため気密性があり、補助リップ３２０と、主リップ３１０と、挿通部材２００とで囲まれる空間が閉塞され、エンジンが高温時に水が掛かる等で急激に冷却されると閉塞空聞内が負圧となり、主リップ３１０が開き、シリンダヘッドカバー内のブローバイガスが外部に漏れる要因となっていた。 Further, at the time of assembly (during the step of passing the injector through the seal member 300), there has been a drawback that delicate work is required so that lip tearing and lip scratches do not occur.
Furthermore, since the material of the seal member 300 is a rubber-like elastic material, it is airtight, the space surrounded by the auxiliary lip 320, the main lip 310, and the insertion member 200 is closed, and the engine is splashed with water at high temperatures. When the air is rapidly cooled, the closed air becomes negative pressure, the main lip 310 is opened, and the blow-by gas in the cylinder head cover leaks to the outside.

特開２００２−３６４７５７号公報JP 2002-364757 A

本考案は、このような課題に鑑みてなされたものであり、取り扱いが容易で、密封性が良好な密封装置を提供することである。   This invention is made | formed in view of such a subject, It is easy to handle and it is providing the sealing device with favorable sealing performance.

本考案に係る密封装置は、開口を有するエンジンヘッドカバーと、前記開口に挿通する挿通部材との間を密封する密封装置において、前記開口側に保持され、前記挿通部材の外周面に密封接触するゴム状弾性材製の主リップと、前記主リップと一体化され、前記挿通部材の外周面に形成された環状溝内にその先端部が位置する様に配置された補助リップとを備えたシール部材を有することを特徴としている。   The sealing device according to the present invention is a sealing device that seals between an engine head cover having an opening and an insertion member that is inserted through the opening, and is a rubber that is held on the opening side and that is in sealing contact with the outer peripheral surface of the insertion member. A seal member comprising: a main lip made of an elastic material; and an auxiliary lip that is integrated with the main lip and is disposed in an annular groove formed on an outer peripheral surface of the insertion member so that a tip end portion thereof is positioned It is characterized by having.

本考案は、以下に記載されるような効果を奏する。
請求項１記載の考案の密封装置によれば、取り扱いが容易で、密封性が良好である。
また、請求項２記載の考案の密封装置によれば、組み立て時（シール部材にインジェクタを通す工程時）における作業性が良好である。 The present invention has the following effects.
According to the sealing device of the invention described in claim 1, the handling is easy and the sealing performance is good.
Further, according to the sealing device of the invention described in claim 2, the workability at the time of assembly (during the step of passing the injector through the seal member) is good.

更に、請求項３記載の考案の密封装置によれば、取り扱いが容易で、密封性が良好である。
更に、請求項４記載の考案の密封装置によれば、エンジンが高温時に水が掛かる等で急激に冷却される場合においても、主リップが開き、シリンダヘッドカバー内のブローバイガスが外部に漏れる事を回避出来る。 Furthermore, according to the sealing device of the invention described in claim 3, the handling is easy and the sealing performance is good.
Further, according to the sealing device of the invention described in claim 4, even when the engine is rapidly cooled due to water splashing at high temperatures, the main lip opens and the blow-by gas in the cylinder head cover leaks to the outside. Can be avoided.

更に、請求項５記載の考案の密封装置によれば、シール部材の構造が簡素化され、組み付け作業も容易である。   Furthermore, according to the sealing device of the invention described in claim 5, the structure of the seal member is simplified and the assembling work is easy.

本考案に係る密封装置の実施形態を示す半断面図。The half sectional view showing the embodiment of the sealing device concerning the present invention. 本考案に係る密封装置の他の実施形態を示す半断面図。The half sectional view showing other embodiments of the sealing device concerning the present invention. 従来技術係る密封装置の半断面図。The half sectional view of the sealing device concerning a prior art.

以下、本考案を実施するための形態について説明する。
図１に基づき考案を実施するための形態について説明する。 Hereinafter, the form for implementing this invention is demonstrated.
A mode for carrying out the invention will be described with reference to FIG.

図１に示す様に、この種密封装置は、開口１１を有するエンジンヘッドカバー１と、この開口１１に挿通する挿通部材２との間を密封する構造であって、この開口１１側に保持され、挿通部材２の外周面に密封接触するゴム状弾性材製の主リップ３１と、この主リップ３１と一体化され、挿通部材２の外周面に形成された環状溝２１内にその先端部３２１が位置する様に配置された補助リップ３２とを備えたシール部材３を有する構成としている。   As shown in FIG. 1, this type of sealing device has a structure that seals between an engine head cover 1 having an opening 11 and an insertion member 2 inserted through the opening 11, and is held on the opening 11 side. A main lip 31 made of a rubber-like elastic material that is in sealing contact with the outer peripheral surface of the insertion member 2, and a tip 321 thereof is integrated in the main lip 31 and in an annular groove 21 formed on the outer peripheral surface of the insertion member 2. The seal member 3 is provided with an auxiliary lip 32 arranged to be positioned.

そして、補助リップ３２は、環状溝２１との間で、非接触の狭間隙であるラビリンス４を形成している。
この為、取り扱いが容易で、密封性が良好である。
特に、ラビリンス４の存在により、補助リップ３２と、主リップ３１と、挿通部材２とで囲まれる空間が閉塞されることが無い為、エンジンが高温時に水が掛かる等で急激に冷却されたとしても、従来技術の様に、閉塞空聞内が負圧となり、主リップ３１が開き、シリンダヘッドカバー内のブローバイガスが外部に漏れる問題を惹起する事が無い。 The auxiliary lip 32 forms a labyrinth 4 that is a non-contact narrow gap with the annular groove 21.
For this reason, it is easy to handle and has good sealing properties.
In particular, because the space surrounded by the auxiliary lip 32, the main lip 31, and the insertion member 2 is not blocked by the presence of the labyrinth 4, it is assumed that the engine is rapidly cooled due to water splashing at high temperatures. However, unlike the prior art, there is no problem that the inside of the closed air becomes negative pressure, the main lip 31 is opened, and the blow-by gas in the cylinder head cover leaks to the outside.

また、補助リップ３２は、シール部材３に接着剤により一体化されている為、シリンダヘッドカバー１の壁とシール部材３とで挟み込む形で固定する必要が無い。
この為、シール部材３の構造が簡素化され、組み付け作業も容易である。 Further, since the auxiliary lip 32 is integrated with the seal member 3 by an adhesive, it is not necessary to fix the auxiliary lip 32 by sandwiching it between the wall of the cylinder head cover 1 and the seal member 3.
For this reason, the structure of the seal member 3 is simplified and the assembling work is easy.

補助リップ３２の素材としては、ファブリック等の通気性のある素材が好ましい。
また、主リップ３１の素材としては、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 a material of the auxiliary lip 32, a material having air permeability such as a fabric is preferable.
As the material of the main lip 31, various rubber-like elastic bodies such as FKM, silicone rubber, EPDM, nitrile rubber, acrylic rubber, HNBR, etc. can be appropriately selected and used.

ついで、図２に基づき考案を実施するための他の形態について説明する。
上述した実施形態と相違する点は、補助リップ３２が、環状溝２１の肩部２２に接していることである。
また、補助リップ３２は、通気性を有する素材で製作されている為、補助リップ３２と、主リップ３１と、挿通部材２とで囲まれる空間が閉塞されることが無く、エンジンが高温時に水が掛かる等で急激に冷却されたとしても、従来技術の様に、閉塞空聞内が負圧となり、主リップ３１が開き、シリンダヘッドカバー内のブローバイガスが外部に漏れる問題を惹起する事が無い。 Next, another embodiment for carrying out the invention will be described with reference to FIG.
The difference from the embodiment described above is that the auxiliary lip 32 is in contact with the shoulder 22 of the annular groove 21.
Further, since the auxiliary lip 32 is made of a material having air permeability, the space surrounded by the auxiliary lip 32, the main lip 31 and the insertion member 2 is not blocked, and the water is discharged when the engine is hot. Even if it is cooled rapidly due to, for example, the air pressure is applied, the closed air is negative pressure, the main lip 31 is opened, and the blow-by gas in the cylinder head cover is not leaked to the outside as in the prior art. .

また、補助リップ３２の先端部３２１は、環状溝２１の底部と間隙が存在する為、エンジンヘッドカバー１とインジェクションパイプである挿通部材２との間の大きな取付偏心を許容する事が出来る。   Further, since the tip 321 of the auxiliary lip 32 has a gap from the bottom of the annular groove 21, it is possible to allow a large mounting eccentricity between the engine head cover 1 and the insertion member 2 that is an injection pipe.

また、本考案は、上述の考案を実施するための形態に限らず本考案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。   Moreover, this invention is not restricted to the form for implementing the above-mentioned invention, Of course, other various structures can be taken, without deviating from the summary of this invention.

シリンダヘッドのエンジンヘッドカバーに設けられた開口と、この開口に挿通されるインジェクションパイプである挿通部材との間の隙間をシールする密封装置として好適に用いられる。   It is suitably used as a sealing device that seals a gap between an opening provided in the engine head cover of the cylinder head and an insertion member that is an injection pipe inserted through the opening.

１ シリンダヘッドカバー
２ 挿通部材
３ シール部材
４ ラビリンス
１１ 開口
２１ 環状溝
２２ 肩部
３１ 主リップ
３２ 補助リップ
３２１先端部 DESCRIPTION OF SYMBOLS 1 Cylinder head cover 2 Insertion member 3 Seal member 4 Labyrinth 11 Opening 21 Annular groove 22 Shoulder part 31 Main lip 32 Auxiliary lip 321 tip part

Claims (5)

開口（１１）を有するエンジンヘッドカバー（１）と、前記開口（１１）に挿通する挿通部材（２）との間を密封する密封装置において、前記開口（１１）側に保持され、前記挿通部材（２）の外周面に密封接触するゴム状弾性材製の主リップ（３１）と、前記主リップ（３１）と一体化され、前記挿通部材（２）の外周面に形成された環状溝（２１）内にその先端部（３２１）が位置する様に配置された補助リップ（３２）とを備えたシール部材（３）を有することを特徴とする密封装置。   In a sealing device that seals between an engine head cover (1) having an opening (11) and an insertion member (2) inserted through the opening (11), the sealing member is held on the opening (11) side, and the insertion member ( 2) a main lip (31) made of a rubber-like elastic material that is in sealing contact with the outer peripheral surface of 2), and an annular groove (21) that is integrated with the main lip (31) and formed on the outer peripheral surface of the insertion member (2). A sealing device comprising a sealing member (3) having an auxiliary lip (32) arranged so that the tip end portion (321) thereof is positioned in the inside. 前記補助リップ（３２）が、前記環状溝（２１）とラビリンス（４）を形成していることを特徴とする請求項１記載の密封装置。   The sealing device according to claim 1, characterized in that the auxiliary lip (32) forms a labyrinth (4) with the annular groove (21). 前記補助リップ（３２）が、前記環状溝（２１）の肩部（２２）に接していることを特徴とする請求項１記載の密封装置。   The sealing device according to claim 1, characterized in that the auxiliary lip (32) is in contact with a shoulder (22) of the annular groove (21). 前記補助リップ（３２）が、通気性を有する素材で製作されていることを特徴とする請求項３記載の密封装置。   The sealing device according to claim 3, wherein the auxiliary lip is made of a material having air permeability. 前記補助リップ（３２）が、前記シール部材（３）に接着剤により一体化されていることを特徴とする請求項１〜４いずれか一項記載の密封装置。   The sealing device according to any one of claims 1 to 4, wherein the auxiliary lip (32) is integrated with the seal member (3) with an adhesive.
JP2011007651U 2011-12-26 2011-12-26 Sealing device Expired - Fee Related JP3174167U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105715800A (en) * 2014-12-16 2016-06-29 罗伯特·博世有限公司 Sealing Element for Sealing a Rotating Shaft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105715800A (en) * 2014-12-16 2016-06-29 罗伯特·博世有限公司 Sealing Element for Sealing a Rotating Shaft

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