JPS61218754A - Cylinder head cover gasket - Google Patents
Cylinder head cover gasketInfo
- Publication number
- JPS61218754A JPS61218754A JP6049785A JP6049785A JPS61218754A JP S61218754 A JPS61218754 A JP S61218754A JP 6049785 A JP6049785 A JP 6049785A JP 6049785 A JP6049785 A JP 6049785A JP S61218754 A JPS61218754 A JP S61218754A
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- seal
- cylinder head
- adhesive layer
- head cover
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
- F16J15/106—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure homogeneous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、自動車用エンジンのシリンダヘッドとヘッ
ドカバーとの間に、油洩れ防止及び制振性の見地から配
されるガスケットに関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a gasket disposed between a cylinder head and a head cover of an automobile engine from the viewpoint of oil leak prevention and vibration damping properties.
ここでは、第7〜8図に示すように、ヘッドカバー1を
、スタッドポルト2に袋ナツト3を螺着してシリンダヘ
ッド5に締結する。いわゆるセンター締めタイプに適用
した場合を例に採り説明する。Here, as shown in FIGS. 7 and 8, the head cover 1 is fastened to the cylinder head 5 by screwing the cap nut 3 into the stud port 2. An example of application to a so-called center tightening type will be explained.
〈従来の技術〉
上記ガスケツ)6A、6B、6Cの断面は、第4図A・
’B −Cに示すように、上側部にヘッドカバー1の周
囲下面に形成された保持溝1aに 着される頭部7を備
え、下側部に線シール的作用を奏する頂部湾曲のシール
凸条8を備えている構成であった。<Prior art> The cross sections of the above gaskets 6A, 6B, and 6C are shown in Fig. 4A.
As shown in B-C, the upper part has a head 7 that is attached to the retaining groove 1a formed on the lower surface of the periphery of the head cover 1, and the lower part has a seal protrusion with a curved top that acts like a line seal. The configuration included 8.
〈発明が解決しようとする問題点〉
上記ガスケット、例えば6Aは、第7〜8図に示すよう
に、ヘッドカバー1とシリンダヘッド5との間に配され
、スタッドボルト2に発生する軸力を介してシール力を
得る。この状態で、自動車がある一定期間(自動車固有
の使用条件或いは運転条件に異なり数千〜数万km)走
行すると、ガスケツ)6Aが経時劣化Φ熱劣化等により
へたり(永久歪)を生じ、シール圧(洩れ圧)が急激に
低下して、シリンダヘッド5とヘッドカバー1との間か
ら油漏れが発生するおそれがあった。そして、昨今のエ
ンジンの高出力化、ターボ化等によリエンジン自体が従
来にもまして高温化しやすいため、ガスケットの熱劣化
が促進され、早期にシール圧(洩れ圧)が低下して、油
漏れも早期に発生する傾向にある。<Problems to be Solved by the Invention> The above-mentioned gasket, for example 6A, is disposed between the head cover 1 and the cylinder head 5, as shown in FIGS. to obtain sealing power. If the car is driven in this state for a certain period of time (several thousand to tens of thousands of km depending on the car's specific usage conditions or driving conditions), the gasket 6A will deteriorate (permanent deformation) due to thermal deterioration, etc. There was a risk that the seal pressure (leakage pressure) would drop suddenly and oil leakage would occur between the cylinder head 5 and the head cover 1. In addition, due to the recent increase in engine output and the use of turbos, the re-engine itself is more likely to reach high temperatures than before, which accelerates thermal deterioration of the gasket, leading to an early drop in seal pressure (leakage pressure) and oil leakage. Leakage also tends to occur earlier.
く問題点を解決するための手段〉 本発明者らは、上記問題点を解決するために。Means to solve problems〉 The present inventors aimed to solve the above problems.
鋭意研究した結果、ガスケットにおいて下記構成を採用
することにより、上記問題点を解決できることを見い出
した。As a result of intensive research, we have found that the above problems can be solved by adopting the following configuration for the gasket.
この発明のシリンダヘッドカバーガスケットは、下側の
線シール的作用を奏するシール凸条を複数本とするとと
もに、シール凸条間に形成される溝部の、少なくともシ
ール凸条の他部位より小さな面圧を受ける部位に粘着剤
層を形成することに特徴を有する。The cylinder head cover gasket of the present invention has a plurality of seal protrusions that act as a lower line seal, and at least has a surface pressure smaller than that of other parts of the seal protrusions in the grooves formed between the seal protrusions. It is characterized by forming an adhesive layer on the receiving area.
〈実施例〉
以下、この発明の実施例を、面側に基づいて説明をする
。従来例と同一部分については、同−同符号と付して説
明を省略する。<Example> Hereinafter, an example of the present invention will be described based on the surface side. Portions that are the same as those in the conventional example will be given the same reference numerals and the explanation will be omitted.
(1)第1実施例(第1図)
ガスケツ)16Aは、従来の第4図Aに示す断面のもの
において、シール凸条8.8間に形成される溝部に粘着
剤層19が形成されている。この粘着剤層19の形成部
位は1通常溝部全周にわたっているが、少なくともシー
ル凸条8の他部位より小さな面圧を受ける部位のみでも
よい、この小さな面圧を受ける部位とは、センター締め
タイプのガスケットでは第5図に、周囲締めタイプのガ
スケットでは第6図にそれぞれ点模様で示す箇所である
。尚、第5図の鎖線丸はスタッドボルトの位置を示す、
また、粘着剤層19の形成方法は塗布でもフィルム貼着
でもよい、そしてこの粘着剤層の厚みは、ガスケットに
シール荷重作用時、即ちスタッドボルトに軸力発生時に
、シール凸条8.8間からはみ出さない厚みとする0例
えば、シール凸条の高さが0.4mm前後の場合、粘着
剤層の厚み0.1mm以下とする。また、粘着剤層を形
成する材料は、耐オイル性及び耐熱性を有ししかもシリ
ンダヘッド(金属)に対してなじみを有するものなら何
でもよく、例えばアクリル系のものが望ましい。(1) First embodiment (Fig. 1) Gasket 16A is a conventional gasket with a cross section shown in Fig. 4A, except that an adhesive layer 19 is formed in the groove formed between the seal ridges 8 and 8. ing. The area where this adhesive layer 19 is formed usually covers the entire circumference of the groove, but it may be at least a part that receives a smaller surface pressure than other parts of the seal protrusion 8. This is the location shown in the dot pattern in Figure 5 for the gasket, and in Figure 6 for the peripheral tightening type gasket. In addition, the chain line circle in Fig. 5 indicates the position of the stud bolt.
The adhesive layer 19 may be formed by coating or film adhesion, and the thickness of this adhesive layer is set between 8.8 and 8.8 mm when a sealing load is applied to the gasket, that is, when axial force is generated on the stud bolt. For example, if the height of the seal protrusion is around 0.4 mm, the thickness of the adhesive layer should be 0.1 mm or less. Further, the material forming the adhesive layer may be any material as long as it has oil resistance and heat resistance and is compatible with the cylinder head (metal). For example, an acrylic material is preferable.
なお、上記ガスケットは、ゴム(例、、NBR。Note that the above gasket is made of rubber (eg, NBR.
ACM、ANM)又は熱可塑性エラストマー材料から、
型成形のみで又は押出し成形と型成形を併用して成形さ
れる。ACM, ANM) or thermoplastic elastomer materials,
It can be molded by molding alone or by a combination of extrusion molding and molding.
上記実施例のガスケットの使用態様を説明する第1図に
示すように、ガスケット16Aはヘッドカバー1とシリ
ンダヘッド5との間に配され。As shown in FIG. 1 illustrating how the gasket of the above embodiment is used, the gasket 16A is disposed between the head cover 1 and the cylinder head 5.
スタッドボルトに発生する軸力を介してシール力を得る
。そして、この状態である一定期間走行すると1、ガス
ケツ)16Aが、従来と同様、経時劣化、熱劣化等によ
りへたり(永久歪)を生じて面圧が低下する。しかし、
シール凸条8.8間の溝部には粘着剤層19が形成され
ているため、粘着剤層19がシリンダヘッド5の上端面
とガスケツ)16Aの溝部との間に面圧を受けて封入さ
れた状態となって、シーラント的作用を奏し、シール圧
(洩れ圧)の急激な低減を阻止できる。Seal force is obtained through the axial force generated in the stud bolt. Then, when the vehicle is driven for a certain period of time in this state, the gasket 16A (1, gasket) 16A becomes sag (permanent strain) due to deterioration over time, heat deterioration, etc., and the surface pressure decreases, as in the conventional case. but,
Since the adhesive layer 19 is formed in the groove between the seal protrusions 8.8, the adhesive layer 19 is sealed under surface pressure between the upper end surface of the cylinder head 5 and the groove of the gasket 16A. In this state, it acts like a sealant and prevents a sudden decrease in seal pressure (leakage pressure).
(2)第2実施例(第2図)
第1実施例において、溝部底面に凹凸を設けて、粘着剤
層19の幅方向への動きを阻止して、シーラント的作用
の増大を図ったガスケツ)16Bである。(2) Second embodiment (Figure 2) In the first embodiment, a gasket is provided in which unevenness is provided on the bottom surface of the groove to prevent movement of the adhesive layer 19 in the width direction, thereby increasing the sealant-like effect. ) 16B.
(3)第3実施例(第3図)
第1実施例の形状のものにおいて、シール凸条を3本と
したガスケット16cである。この実施例の場合、粘着
剤層19によるシーラント的作用が二箇所となり、シー
ル効果が増大する。(3) Third Embodiment (FIG. 3) A gasket 16c having the shape of the first embodiment has three seal protrusions. In this embodiment, the adhesive layer 19 acts like a sealant at two locations, increasing the sealing effect.
〈発明の効果〉
この発明のシリンダヘッドカバーガスケットは上記のよ
うに、下側の形成された複数のシール凸条間に粘着剤層
を形成することにより、ガスケットへたり後の急激なシ
ール圧(洩れ圧)の低下を阻止できる。従って、苛酷な
条件で使用されても油洩れが早期に発生するおそれがな
い。<Effects of the Invention> As described above, the cylinder head cover gasket of the present invention prevents sudden sealing pressure (leakage) after the gasket has set by forming an adhesive layer between the plurality of seal convex strips formed on the lower side. pressure) can be prevented from decreasing. Therefore, even when used under severe conditions, there is no risk of early oil leakage.
尚、第9図に示すグラフ図は、第1実施例(第1図)及
び従来例(第4図A)のガスケット16A、6Aを、エ
ンジンオイルを封入したシリンダヘッド模型にそれぞれ
セットして、スタツドポルトを40kgf*cmの軸力
が発生するように締め付け、120℃雰囲気中で劣化試
験を行ない、各時間ごとに洩れ圧を測定した結果である
。第1実施例・従来例とも凸条高さは0.4mmで、ま
た、粘着剤層は0.02m■tのアクリル樹脂フィルム
で形成した。第9図に示す結果から、劣化時間500時
間経過後においても実施例のガスケットは洩れ圧の大き
な低下がないのに対し5従来のガスケットは200時間
経過頃から洩れ圧が急激に低下するThe graph shown in FIG. 9 shows the gaskets 16A and 6A of the first embodiment (FIG. 1) and the conventional example (FIG. 4A) set in a cylinder head model filled with engine oil. The stud port was tightened to generate an axial force of 40 kgf*cm, a deterioration test was conducted in an atmosphere of 120° C., and the leakage pressure was measured at each time interval. In both the first example and the conventional example, the height of the ridges was 0.4 mm, and the adhesive layer was formed of an acrylic resin film of 0.02 m·t. From the results shown in Figure 9, the leakage pressure of the gasket of Example 5 does not significantly decrease even after 500 hours of deterioration time has elapsed, whereas the leakage pressure of the conventional gasket decreases rapidly from around 200 hours.
第1〜3図はこの発明の各ガスケットを示し、#!1図
は第1実施例の装着態様断面図、第2図は第2実施例の
横断面図、第3図は第3実施例の横断面図、第4図A−
B・Cはそれぞれ従来のガスケットの各横断面図、第5
・6図はそれぞれセンター締め及び周囲線タイプのガス
ケットにおける他部位より小さな面圧を受ける部位を示
す平面図、 第7図はシリンダヘッドにヘッドカバーに
締結した状態の斜視図、第8図は同じく部分断面図、第
9図は第1実施例及び従来例のガスケットの劣化試験に
おける洩れ圧と劣化時間の関係を示すグラフ図である。
l・・・ヘッドカバー。
2・・・スタッドボルト。
5・・・シリンダヘッド、
6A・・・ガスケット。
8・・・シール凸条、
16A・・・ガスケット、
16B・・・ガスケット、
tSC・・・ガスケット。
19・・・粘着剤層。
特 許 出 願 人
第7図
鳴化峠閏 (hr)
自 発 補 正
手続補正書
60.6.4
昭和 年 月 日
1、事件の表示
昭和60年 特許願 第060497号2、発明の名称
シリンダヘッドカバーガスケット
3、補正をする者
事件との関係 特 許 出 願 人住所
名称 豊田合成株式会社
4、代理人
5、補正の対象
図 面
6゜補正の内容Figures 1 to 3 show each gasket of this invention, and #! 1 is a sectional view of the mounting state of the first embodiment, FIG. 2 is a cross-sectional view of the second embodiment, FIG. 3 is a cross-sectional view of the third embodiment, and FIG. 4A-
B and C are cross-sectional views of conventional gaskets, respectively.
・Figure 6 is a plan view showing the parts of the center tightening and peripheral line type gaskets that receive smaller surface pressure than other parts, Figure 7 is a perspective view of the cylinder head fastened to the head cover, and Figure 8 is the same part. The cross-sectional view and FIG. 9 are graphs showing the relationship between leakage pressure and deterioration time in deterioration tests of gaskets of the first embodiment and the conventional example. l...Head cover. 2... Stud bolt. 5...Cylinder head, 6A...Gasket. 8...Seal protrusion, 16A...Gasket, 16B...Gasket, tSC...Gasket. 19... Adhesive layer. Patent Applicant Figure 7 Meika Touge Jun (hr) Voluntary Amendment Procedure Amendment 60.6.4 Showa Year Month Day 1, Case Indication 1985 Patent Application No. 060497 2, Invention Title Cylinder Head cover gasket 3, relationship with the case of the person making the amendment Patent application Person address name Toyoda Gosei Co., Ltd. 4, agent 5, drawings subject to amendment 6゜Contents of amendment
Claims (1)
ダヘッドカバーガスケットにおいて、前記シール凸条が
複数本とされるとともに、前記シール凸条間に形成され
る溝部の、少なくともシール凸条の他部位より小さな面
圧を受ける部位に粘着剤層が形成されていることを特徴
とするシリンダヘッドカバーガスケット。In a cylinder head cover gasket having seal protrusions on the lower side that perform a linear sealing action, the seal protrusions are plural, and at least other parts of the seal protrusions are formed in the grooves formed between the seal protrusions. A cylinder head cover gasket characterized by having an adhesive layer formed in areas that receive smaller surface pressure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6049785A JPS61218754A (en) | 1985-03-25 | 1985-03-25 | Cylinder head cover gasket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6049785A JPS61218754A (en) | 1985-03-25 | 1985-03-25 | Cylinder head cover gasket |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61218754A true JPS61218754A (en) | 1986-09-29 |
Family
ID=13143991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6049785A Pending JPS61218754A (en) | 1985-03-25 | 1985-03-25 | Cylinder head cover gasket |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61218754A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01176265U (en) * | 1988-06-01 | 1989-12-15 | ||
WO2002057611A1 (en) * | 2001-01-18 | 2002-07-25 | Dow Global Technologies Inc. | Adhesively bonded valve cover cylinder head assembly |
US6543404B2 (en) | 2001-04-04 | 2003-04-08 | Dow Global Technologies, Inc. | Adhesively bonded engine intake manifold assembly |
US7360519B2 (en) | 2003-07-10 | 2008-04-22 | Dow Global Technologies, Inc. | Engine intake manifold assembly |
WO2018095658A1 (en) * | 2016-11-22 | 2018-05-31 | Rubbertec Gmbh | Cylinder head cover sealing, cylinder head cover, and assembly consisting of engine block and cylinder head cover |
-
1985
- 1985-03-25 JP JP6049785A patent/JPS61218754A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01176265U (en) * | 1988-06-01 | 1989-12-15 | ||
WO2002057611A1 (en) * | 2001-01-18 | 2002-07-25 | Dow Global Technologies Inc. | Adhesively bonded valve cover cylinder head assembly |
US6543404B2 (en) | 2001-04-04 | 2003-04-08 | Dow Global Technologies, Inc. | Adhesively bonded engine intake manifold assembly |
US6739302B2 (en) | 2001-04-04 | 2004-05-25 | Dow Global Technologies, Inc. | Adhesively bonded engine intake manifold assembly |
US7213560B2 (en) | 2001-04-04 | 2007-05-08 | Dow Global Technologies, Inc. | Adhesively bonded engine intake manifold assembly |
US7360519B2 (en) | 2003-07-10 | 2008-04-22 | Dow Global Technologies, Inc. | Engine intake manifold assembly |
WO2018095658A1 (en) * | 2016-11-22 | 2018-05-31 | Rubbertec Gmbh | Cylinder head cover sealing, cylinder head cover, and assembly consisting of engine block and cylinder head cover |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4778189A (en) | Gasket with elastic sealing members | |
US4759556A (en) | Metal gasket with auxiliary bead | |
JP2010525270A (en) | Metal flat gasket | |
US6354599B1 (en) | Gasket with compressible sealing member and hard support layer | |
US5228702A (en) | Molded plastic gasket having a combination sealing bead | |
US5975540A (en) | Gasket with compressible sealing section and hard pressure affecting section | |
US20050046117A1 (en) | Sealing gasket with flexible stopper | |
EP0697550B1 (en) | Gasket | |
JP4154366B2 (en) | Cylinder head gasket | |
US3913927A (en) | Sealing boundary gasket for sealing between metal members that are held together by bolts | |
JPS61218754A (en) | Cylinder head cover gasket | |
US6045139A (en) | Sealing system for metal gasket and gasket attaching portions | |
US5295698A (en) | Molded plastic gasket having an improved sealing bead | |
JP3709365B2 (en) | Metal gasket | |
EP1510735B1 (en) | Sealing gasket with flexible stopper | |
JP3026081B2 (en) | Metal laminated gasket | |
JP2555557Y2 (en) | Metal laminated gasket with bead and coating protection | |
EP1510734A2 (en) | Sealing gasket with flexible stopper | |
JPS62177363A (en) | Gasket for exhaust manifold | |
EP0431227B1 (en) | A steel laminate gasket | |
JPH051727Y2 (en) | ||
JP2003083165A (en) | Cylinder head gasket | |
JPH0477834B2 (en) | ||
JPS62261755A (en) | Metal gasket | |
JPH01153872A (en) | Metal gasket |