JPH04347065A - Metallic gasket - Google Patents
Metallic gasketInfo
- Publication number
- JPH04347065A JPH04347065A JP14545591A JP14545591A JPH04347065A JP H04347065 A JPH04347065 A JP H04347065A JP 14545591 A JP14545591 A JP 14545591A JP 14545591 A JP14545591 A JP 14545591A JP H04347065 A JPH04347065 A JP H04347065A
- Authority
- JP
- Japan
- Prior art keywords
- bead
- combustion chamber
- shim plate
- metal gasket
- width
- 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
- 239000011324 bead Substances 0.000 claims abstract description 26
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
Description
[発明の目的] [Purpose of the invention]
【0001】0001
【産業上の利用分野】本発明は内燃機関のシリンダーヘ
ッドとシリンダーブロックとの接合面に介装して、燃焼
ガス,冷却水及び潤滑油等の漏洩を防止する金属ガスケ
ットに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal gasket that is installed at the joint surface between a cylinder head and a cylinder block of an internal combustion engine to prevent leakage of combustion gas, cooling water, lubricating oil, etc.
【0002】0002
【従来の技術】金属ガスケットは、弾性を有する基板に
各燃焼室に対応した数の燃焼室孔を設けると共に、この
燃焼室孔の周縁に同心円状のビードを備えた構成として
いる。図7は金属ガスケットを一部切欠して示した断面
図であり、これによって従来例を説明する。図において
1は弾性を有する基板であり、左端2が燃焼室孔2′(
図7において図示しない)に接する部分である。3はビ
ードであって燃焼室孔の周縁部に平坦部4を残して凸状
に形成する。平坦部4にはストッパー5を設けており、
ストッパーとしては溶射によって肉盛りをする場合、あ
るいはシム板を固着する場合等があり、ビードの振動に
よる疲労破壊を防止する機能を有してい2. Description of the Related Art A metal gasket has a structure in which a number of combustion chamber holes corresponding to each combustion chamber are provided on an elastic substrate, and concentric beads are provided around the periphery of the combustion chamber holes. FIG. 7 is a partially cutaway sectional view of a metal gasket, and a conventional example will be explained using this diagram. In the figure, 1 is an elastic substrate, and the left end 2 is the combustion chamber hole 2' (
(not shown in FIG. 7). A bead 3 is formed in a convex shape with a flat portion 4 remaining at the peripheral edge of the combustion chamber hole. A stopper 5 is provided on the flat part 4,
The stopper can be overlaid by thermal spraying or fixed to a shim plate, and has the function of preventing fatigue failure due to bead vibration.
【0003】0003
【発明が解決しようとする課題】近年に至って、エンジ
ンの小型,軽量化及び高性能化が進み、その結果、ボア
間が非常に狭くなってきて、ガスケットのシール幅が5
mm以下のものもあり、上記した従来技術では対応でき
なくなってきた。即ち、ビード幅はエンジン剛性により
、変形追随量にて決められるものであり、2.0 mm
幅以下は追随量が不足し、ビード幅を広くすると、ビー
ドの両端にある平坦部にストッパーを設けられないから
である。[Problem to be Solved by the Invention] In recent years, engines have become smaller, lighter, and more efficient, and as a result, the gap between the bores has become extremely narrow, and the seal width of the gasket has become 5.
Some of them are smaller than mm, and the above-mentioned conventional techniques are no longer able to handle them. In other words, the bead width is determined by the amount of deformation following the engine rigidity, and is 2.0 mm.
This is because if the bead width is less than that, the following amount is insufficient, and if the bead width is made wider, stoppers cannot be provided on the flat portions at both ends of the bead.
【0004】又、たとえストッパーを設けたとしても、
ストッパーの幅が狭すぎて極めて大きな面圧がこれにか
かり、更に運転時に発生する熱でエンジンの体膨脹が加
算されて、一層高圧となるためである。又、振動による
繰返し荷重が加わることとエンジンの材質がアルミ化す
ることも手伝って、エンジン面に凹みをつくり、ストッ
パー効果がなくなる欠点を有している。本発明は上記欠
点を解決するためになされたもものであり、ボア間が狭
い場合であってもストッパー効果を失うことのない金属
ガスケットを提供することを目的としている。
[発明の構成][0004] Furthermore, even if a stopper is provided,
This is because the width of the stopper is too narrow and an extremely large surface pressure is applied to it, and when the heat generated during operation adds to the expansion of the engine, the pressure becomes even higher. In addition, the repeated loads due to vibrations and the fact that the engine is made of aluminum create dents on the engine surface, resulting in a loss of stopper effect. The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a metal gasket that does not lose its stopper effect even when the distance between the bores is narrow. [Structure of the invention]
【0005】[0005]
【課題を解決するための手段】図1によって本発明の基
本的な構成を説明する。先ず、本発明では弾性を有する
基板1にビード3を設けると共に、ビードの凹面にシム
板6を固定点7にて固定したことである。この場合に固
定するシム板は基板1の全面に設けることなく、ボアの
端部2からビード幅の55%以上で、かつ70%以下の
ときが最も疲労破壊を起こさない数値であることを実験
にて確認した。即ち、ビードの凸側平坦部に設けていた
ストッパーに代えてビードの凹側にシム板を設けて、ス
トッパーとしての機能をはたすようにしたものである。Means for Solving the Problems The basic configuration of the present invention will be explained with reference to FIG. First, in the present invention, a bead 3 is provided on an elastic substrate 1, and a shim plate 6 is fixed at a fixing point 7 to the concave surface of the bead. In this case, the shim plate to be fixed is not provided on the entire surface of the board 1, but experiments have been conducted to find that fatigue failure is least likely to occur when the width is 55% or more and 70% or less of the bead width from the end 2 of the bore. Confirmed at. That is, instead of the stopper provided on the convex flat portion of the bead, a shim plate is provided on the concave side of the bead to function as a stopper.
【0006】次に作用について説明する。上記構成のガ
スケットを締付けると図3に示すように変形する。図3
(a) ,図(c) からわかるように、ビードのボア
寄り半分が全屈し、残り半分は全屈しない。そして、シ
ム板に当接する部分のビードは全屈したとしても、残り
部分は全屈しないため、この部分が復元性を充分持ち、
耐久性を保証することになる。なお、圧力分布は図3(
b) ,図3(d) のようになり、充分密ぺいされて
いることがわかる。又、図3(a) はボア間の状態を
示し、図3(c) はそれ以外の状態を示す。Next, the operation will be explained. When the gasket configured as described above is tightened, it deforms as shown in FIG. 3. Figure 3
As can be seen from Figures (a) and (c), the half of the bead closer to the bore is fully bent, and the remaining half is not fully bent. Even if the part of the bead that contacts the shim plate bends completely, the remaining part does not bend completely, so this part has sufficient resilience.
This will ensure durability. The pressure distribution is shown in Figure 3 (
b) and Fig. 3(d), and it can be seen that they are sufficiently densely covered. Moreover, FIG. 3(a) shows the state between the bores, and FIG. 3(c) shows the other state.
【0007】[0007]
【実施例】以下図面を参照して実施例を説明する。図2
は本発明による金属ガスケットの一実施例の断面図であ
り、図7と同一部分については同一符号を付して説明を
省略する。図4は金属ガスケットの一部を切欠して示し
た概要平面図であり、図中のA−A′が図1であり、B
−B′が図2(a) であり、C−C′が図2(b)
である。
先ず、図4に示す平面構成の概要を簡単に説明する。図
4において、10は金属ガスケット本体であり、弾性を
有する基板1からなる。弾性基板1には燃焼室に対応し
て設けた開口部2′があり、この開口部2′の外縁には
ビード(一点鎖線が頂部)3が同心円状に設けられる。
8は締付けのためのボルト孔、9は冷却水循環用の水孔
、11は油孔である。[Embodiment] An embodiment will be described below with reference to the drawings. Figure 2
7 is a cross-sectional view of one embodiment of the metal gasket according to the present invention, and the same parts as those in FIG. 7 are given the same reference numerals and the description thereof will be omitted. FIG. 4 is a schematic plan view with a part of the metal gasket cut away, and A-A' in the figure is FIG.
-B' is Fig. 2(a), and C-C' is Fig. 2(b).
It is. First, the outline of the planar configuration shown in FIG. 4 will be briefly explained. In FIG. 4, 10 is a metal gasket main body, which is made of an elastic substrate 1. The elastic substrate 1 has an opening 2' provided corresponding to the combustion chamber, and beads 3 (tops indicated by dashed-dotted lines) 3 are provided concentrically at the outer edge of the opening 2'. 8 is a bolt hole for tightening, 9 is a water hole for cooling water circulation, and 11 is an oil hole.
【0008】図2(a) はボア間の状態図を示してお
り、B−B′断面であるため左側が#1ボア、右側が#
2ボアである。そしてボア間が狭いため1本のビード3
を共用している。この場合、#1側のボアにはシム板6
−1 を固定し、#2側のボアにはシム板6−2 を固
定する。シム板の幅は平坦部よりビード幅の25±10
%長いものとする。なお、上記シム板の数値は実験結果
より確められたものであり、本実施例によれば狭いボア
間であっても、ストッパーの場合と同様に充分なシール
効果が得られる。なお、シム板の板厚は基板より薄いも
のである。FIG. 2(a) shows a state diagram between the bores, and since it is a B-B' cross section, the left side is the #1 bore and the right side is the #1 bore.
It is 2 bore. And because the distance between the bores is narrow, one bead 3
are shared. In this case, the #1 side bore has a shim plate 6.
-1 and fix the shim plate 6-2 to the bore on the #2 side. The width of the shim plate is 25±10 of the bead width from the flat part.
% long. Note that the numerical values of the shim plate mentioned above were confirmed from experimental results, and according to this embodiment, even in a narrow bore gap, a sufficient sealing effect can be obtained as in the case of a stopper. Note that the thickness of the shim plate is thinner than that of the substrate.
【0009】図5は他の実施例の構成を示す断面図であ
る。本実施例は基板1−1 にシム板6を固定点7にて
固定したものに、他の基板1−2を対称位置に配設した
ものである。本実施例によれば、エンジンの変形絶対量
が大である場合に対処できる。又、図6はガスケット全
体の厚さが欲しい場合、必要な厚さの副板12を中間に
挾持することを示す図であり、図中の符号は図5に対応
する。FIG. 5 is a sectional view showing the structure of another embodiment. In this embodiment, a shim plate 6 is fixed to a substrate 1-1 at a fixing point 7, and another substrate 1-2 is arranged at a symmetrical position. According to this embodiment, it is possible to cope with the case where the absolute amount of deformation of the engine is large. Further, FIG. 6 is a diagram showing that when the entire thickness of the gasket is desired, a sub-plate 12 of the necessary thickness is sandwiched in the middle, and the reference numerals in the diagram correspond to those in FIG. 5.
【0010】0010
【発明の効果】以上説明したように、本発明によれば内
燃機関用ガスケットにおいて、ビードの凹面に部分的な
シム板を固定する構成としたので、狭いボア間であって
もストッパー機能を付加することが可能である。As explained above, according to the present invention, a gasket for an internal combustion engine has a structure in which a partial shim plate is fixed to the concave surface of the bead, so that a stopper function can be added even between narrow bores. It is possible to do so.
【図1】本発明の基本構成を示す図。FIG. 1 is a diagram showing the basic configuration of the present invention.
【図2】本発明の一実施例のボア間を示す構成図。FIG. 2 is a configuration diagram showing the space between bores in an embodiment of the present invention.
【図3】本発明の作用を示す図。FIG. 3 is a diagram showing the operation of the present invention.
【図4】金属ガスケットの平面構成を示す概要図。FIG. 4 is a schematic diagram showing a planar configuration of a metal gasket.
【図5】本発明の一実施例の断面構成図。FIG. 5 is a cross-sectional configuration diagram of an embodiment of the present invention.
【図6】他の実施例の断面構成図。FIG. 6 is a cross-sectional configuration diagram of another embodiment.
【図7】従来の金属ガスケットを説明する断面図。FIG. 7 is a sectional view illustrating a conventional metal gasket.
1,1−1 ,1−2 基板 2 燃焼室孔端部 2′ 燃焼室孔 3,3−1 ,3−2 ビード 4 平坦部 5 ストッパー 6 シム板 7 固定点 8 締付け孔 9 水孔 10 金属ガスケット本体 11 油孔 1, 1-1, 1-2 Board 2 Combustion chamber hole end 2' Combustion chamber hole 3, 3-1, 3-2 beads 4 Flat part 5 Stopper 6 Shim board 7 Fixed point 8 Tightening hole 9 Water hole 10 Metal gasket body 11 Oil hole
Claims (4)
板からなる金属ガスケットにおいて、前記ビードの凹面
側の燃焼室端部から部分的なシム板を併設すると共に、
燃焼室寄り平坦部にて固定したことを特徴とする金属ガ
スケット。1. A metal gasket comprising a substrate with a bead formed on the periphery of a combustion chamber hole, in which a partial shim plate is provided from an end of the combustion chamber on the concave side of the bead,
A metal gasket characterized by being fixed at a flat part near the combustion chamber.
ド幅の55%以上70%以下であることを特徴とする請
求項1記載の金属ガスケット。2. The metal gasket according to claim 1, wherein the shim plate has a width from 55% to 70% of the bead width from the end of the combustion chamber on the concave side.
板を持たない基板を対称形状に配設したことを特徴とす
る請求項1又は2記載の金属ガスケット。3. The metal gasket according to claim 1, wherein a substrate having no shim plate is disposed symmetrically with respect to a substrate having a shim plate.
ードを共用する場合シム板の幅は、ビード中心よりボア
寄り平坦部長よりビード幅の25%±10%のシム板を
併設し、夫々のシム板は燃焼室寄り平坦部にて固着した
ことを特徴とする金属ガスケット。[Claim 4] When the combustion chamber has a plurality of holes and the bead is shared between cylinders, the width of the shim plate is 25% ± 10% of the bead width from the center of the bead to the flat part closer to the bore. A metal gasket characterized in that each shim plate is fixed at a flat part near the combustion chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14545591A JPH04347065A (en) | 1991-05-21 | 1991-05-21 | Metallic gasket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14545591A JPH04347065A (en) | 1991-05-21 | 1991-05-21 | Metallic gasket |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04347065A true JPH04347065A (en) | 1992-12-02 |
Family
ID=15385630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14545591A Pending JPH04347065A (en) | 1991-05-21 | 1991-05-21 | Metallic gasket |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04347065A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5544899A (en) * | 1993-01-14 | 1996-08-13 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
US5560623A (en) * | 1990-04-04 | 1996-10-01 | Kabushiki Kaisha Ket And Ket | Metal gasket |
WO1998014723A1 (en) * | 1996-10-04 | 1998-04-09 | Taiho Kogyo Co., Ltd. | Cylinder head gasket |
US6283480B1 (en) | 1997-11-07 | 2001-09-04 | Nippon Gasket Co., Ltd. | Metal gasket |
EP1271017A1 (en) * | 2001-06-22 | 2003-01-02 | Federal-Mogul Sealing Systems GmbH | Gasket |
EP1621803A1 (en) * | 2000-07-24 | 2006-02-01 | Federal-Mogul Sealing Systems GmbH | Cylinderhead gasket |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04175579A (en) * | 1990-11-08 | 1992-06-23 | Toyota Motor Corp | Metal gasket |
JPH04219572A (en) * | 1990-08-07 | 1992-08-10 | Ketsuto & Ketsuto:Kk | Metal gasket |
-
1991
- 1991-05-21 JP JP14545591A patent/JPH04347065A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04219572A (en) * | 1990-08-07 | 1992-08-10 | Ketsuto & Ketsuto:Kk | Metal gasket |
JPH04175579A (en) * | 1990-11-08 | 1992-06-23 | Toyota Motor Corp | Metal gasket |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5560623A (en) * | 1990-04-04 | 1996-10-01 | Kabushiki Kaisha Ket And Ket | Metal gasket |
US5544899A (en) * | 1993-01-14 | 1996-08-13 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
CN1035638C (en) * | 1993-01-14 | 1997-08-13 | 日本金属密封片株式会社 | Metallic gasket |
WO1998014723A1 (en) * | 1996-10-04 | 1998-04-09 | Taiho Kogyo Co., Ltd. | Cylinder head gasket |
US6142482A (en) * | 1996-10-04 | 2000-11-07 | Taiho Kogyo Co., Ltd. | Cylinder head gasket |
US6283480B1 (en) | 1997-11-07 | 2001-09-04 | Nippon Gasket Co., Ltd. | Metal gasket |
EP1621803A1 (en) * | 2000-07-24 | 2006-02-01 | Federal-Mogul Sealing Systems GmbH | Cylinderhead gasket |
EP1271017A1 (en) * | 2001-06-22 | 2003-01-02 | Federal-Mogul Sealing Systems GmbH | Gasket |
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