JP2002005292A - Metal gasket - Google Patents
Metal gasketInfo
- Publication number
- JP2002005292A JP2002005292A JP2000181193A JP2000181193A JP2002005292A JP 2002005292 A JP2002005292 A JP 2002005292A JP 2000181193 A JP2000181193 A JP 2000181193A JP 2000181193 A JP2000181193 A JP 2000181193A JP 2002005292 A JP2002005292 A JP 2002005292A
- Authority
- JP
- Japan
- Prior art keywords
- bead
- combustion chamber
- chamber hole
- auxiliary
- substrate
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、燃焼室孔の周囲に
ビードが設けられた基板と、該基板より薄肉に形成され
て前記基板に積層されたシム板とを備え、シリンダブロ
ックとシリンダヘッドとの接合面間に介装して締結ボル
トで締め付けることにより、前記接合面間をシールする
ようにした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 cylinder block and a cylinder head comprising a substrate provided with a bead around a combustion chamber hole, and a shim plate formed thinner than the substrate and laminated on the substrate. The present invention relates to a metal gasket that is interposed between joining surfaces of the metal gasket and is fastened with a fastening bolt to seal between the joining surfaces.
【０００２】[0002]
【従来の技術】従来のこの種の金属ガスケットとして
は、例えば、特開平６−１１７５４２号公報や特開平１
０−２８１２２８号公報に示すように、基板の燃焼室孔
の周縁部（基板ビードより燃焼室孔側）に該基板より薄
肉のシム板を積層して該燃焼室孔の周縁部と他の部分と
の間に板厚差を設け、かかる板厚差により、シリンダヘ
ッドとシリンダブロックとの接合面間に介装して締結ボ
ルトで締め付ける際に、燃焼室孔の周縁部に最も面圧が
集中するようにし、これにより、シリンダボア端部周縁
に最大荷重をかけてシールするようにしたものが知られ
ている。2. Description of the Related Art A conventional metal gasket of this type is disclosed in, for example, JP-A-6-117542 and JP-A-1
As disclosed in Japanese Patent Application Publication No. 0-281228, a shim plate thinner than the substrate is laminated on the periphery of the combustion chamber hole of the substrate (on the side closer to the combustion chamber hole than the substrate bead), and the periphery of the combustion chamber hole and other parts are stacked. The thickness difference between the cylinder head and the surface pressure concentrates on the periphery of the combustion chamber hole when tightening with the fastening bolt by interposing between the joining surface of the cylinder head and the cylinder block. There is known a configuration in which a maximum load is applied to the peripheral edge of the cylinder bore to seal it.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の金属ガスケットにおいては、締結ボルト近傍に比べ
て締結ボルト間の方が面圧が低くなるため、特に、運転
時に高温／高圧ガスを発生して大きな振動振幅を発生す
る最近のエンジンに使用する場合には、締結ボルト間の
低面圧域の振動振幅の増大により基板の燃焼室孔の周囲
に設けられたビードだけでは十分なシール性能が得られ
ないという不都合がある。However, in the above-mentioned conventional metal gasket, the surface pressure is lower between the fastening bolts than in the vicinity of the fastening bolts. When used in modern engines that generate large vibration amplitudes, sufficient sealing performance can be obtained only with the bead provided around the combustion chamber hole of the substrate due to the increase in vibration amplitude in the low surface pressure region between the fastening bolts. There is a disadvantage that it cannot be done.
【０００４】また、一方で、最近のアルミニウム製エン
ジンのように剛性の低いエンジンでは、エンジンの変形
を防止する観点から燃焼室孔の周縁部に過大な面圧をか
けられないため、上述した締結ボルト間の面圧低下に起
因するシール性能の低下を助長する原因になっている。
本発明はかかる不都合を解消するためになされたもので
あり、燃焼室孔の周縁に過大な面圧をかけなくても燃焼
室孔の全周にわたって十分なシール性能を得ることがで
きる金属ガスケットを提供することを目的とする。On the other hand, in the case of a low-rigidity engine such as a recent aluminum engine, an excessive surface pressure cannot be applied to the periphery of the combustion chamber hole from the viewpoint of preventing deformation of the engine. This contributes to a decrease in sealing performance due to a decrease in surface pressure between bolts.
The present invention has been made in order to solve such inconvenience, and a metal gasket capable of obtaining a sufficient sealing performance over the entire circumference of the combustion chamber hole without applying an excessive surface pressure to the periphery of the combustion chamber hole. The purpose is to provide.
【０００５】[0005]
【課題を解決するための手段】かかる目的を達成するた
めに、請求項１に係る金属ガスケットは、燃焼室孔の周
囲にビードが設けられた基板と、該基板より薄肉に形成
されて前記基板に積層されたシム板とを備え、シリンダ
ブロックとシリンダヘッドとの接合面間に介装して締結
ボルトで締め付けることにより、前記接合面間をシール
するようにした金属ガスケットにおいて、前記シム板を
前記燃焼室孔の周囲に前記基板のビードを覆うように配
置し、且つ、該基板のビードの前記燃焼室孔側及び該燃
焼室孔から離間する側の内の少なくとも一方の側の前記
シム板に補助ビードを設けたことを特徴とする。In order to achieve the above object, a metal gasket according to claim 1 has a substrate provided with a bead around a combustion chamber hole, and a substrate formed to be thinner than the substrate. A metal gasket comprising a shim plate laminated on the metal gasket, which is interposed between the joining surfaces of the cylinder block and the cylinder head and tightened with fastening bolts, thereby sealing between the joining surfaces. The shim plate is disposed around the combustion chamber hole so as to cover the bead of the substrate, and the shim plate on at least one of the combustion chamber hole side and the side separated from the combustion chamber hole of the substrate bead. And an auxiliary bead provided on the vehicle.
【０００６】請求項２に係る金属ガスケットは、請求項
１において、前記補助ビードを前記基板のビードの前記
燃焼室孔側及び該燃焼室孔から離間する側の両方に設け
たことを特徴とする。請求項３に係る金属ガスケット
は、請求項２において、前記基板のビードの前記燃焼室
孔側に配置された補助ビードの高さを該燃焼室孔から離
間する側に配置された補助ビードより高くしたことを特
徴とする。According to a second aspect of the present invention, in the metal gasket according to the first aspect, the auxiliary bead is provided on both the side of the bead of the substrate and the side separated from the combustion chamber hole. . In the metal gasket according to claim 3, in claim 2, the height of the auxiliary bead disposed on the side of the combustion chamber hole of the substrate bead is higher than the height of the auxiliary bead disposed on the side separated from the combustion chamber hole. It is characterized by having done.
【０００７】請求項４に係る金属ガスケットは、請求項
１〜３のいずれか一項において、前記補助ビードの高さ
寸法を前記燃焼室孔の周方向に沿って変化させたことを
特徴とする。According to a fourth aspect of the present invention, in the metal gasket according to any one of the first to third aspects, the height of the auxiliary bead is changed along the circumferential direction of the combustion chamber hole. .
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図を
参照して説明する。図１は本発明の実施の形態の一例で
ある金属ガスケットを説明するための要部平面図、図２
は図１の要部断面図、図３〜図１２は本発明の他の実施
の形態を説明するための説明的断面図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a main part for explaining a metal gasket according to an embodiment of the present invention.
1 is a sectional view of a main part of FIG. 1, and FIGS. 3 to 12 are explanatory sectional views for explaining another embodiment of the present invention.
【０００９】図１及び図２を参照して、この金属ガスケ
ットは、燃焼室孔２の周囲にフルビード３が形成された
基板１と、基板１より薄肉に形成されて該基板１に積層
されたシム板４とを備えている。シム板４は、基板１の
燃焼室孔２の周囲にフルビード３の凸部側を覆うように
配置されており、これにより、燃焼室孔２の周囲と他の
部分との間に板厚差を設けている。なお、図１では、シ
ム板４は裏面に配置されている。Referring to FIG. 1 and FIG. 2, this metal gasket is formed on a substrate 1 having a full bead 3 formed around a combustion chamber hole 2, and is formed thinner than the substrate 1 and laminated on the substrate 1. And a shim plate 4. The shim plate 4 is arranged around the combustion chamber hole 2 of the substrate 1 so as to cover the convex side of the full bead 3, whereby a difference in plate thickness between the periphery of the combustion chamber hole 2 and other portions is provided. Is provided. In FIG. 1, the shim plate 4 is arranged on the back surface.
【００１０】ここで、この実施の形態では、シム板４の
フルビード３の燃焼室孔２側及び該燃焼室孔２から離間
する側の両方の側に補助ビード５ａ，５ｂを設けてい
る。補助ビード５ａ，５ｂは共にフルビードとされて基
板１のフルビード３より低く且つ厚さ方向に弾性変形可
能とされており、凸部側が基板１を向くように配置され
ている。In this embodiment, auxiliary beads 5a and 5b are provided on both sides of the full bead 3 of the shim plate 4 on the side of the combustion chamber hole 2 and on the side away from the combustion chamber hole 2. The auxiliary beads 5a and 5b are both full beads, are lower than the full beads 3 of the substrate 1 and can be elastically deformed in the thickness direction, and are arranged so that the convex side faces the substrate 1.
【００１１】また、シム板４の補助ビード５ａ，５ｂ
は、ボルト締結時の締め付け力が大きい締結ボルトのボ
ルト孔６近傍の高さ寸法が、締め付け力が小さい各ボル
ト孔６間の高さ寸法より低く設定されている。ボルト孔
６近傍の補助ビード５ａ，５ｂの内で燃焼室孔２側の補
助ビード５ｂの高さ寸法は０（平坦）でもよく、この実
施の形態では、図示は省略するが、補助ビード５ａ，５
ｂの高さ寸法をボルト孔６近傍から各ボルト孔６間に向
けて次第に高くなるようにして燃焼室孔２の周方向に沿
って抑揚を付けている。なお、図１において、符号７は
水孔、８はオイル孔である。The auxiliary beads 5a, 5b of the shim plate 4
The height of the fastening bolt having a large fastening force in the vicinity of the bolt hole 6 at the time of fastening the bolt is set smaller than the height between the bolt holes 6 having the small fastening force. Of the auxiliary beads 5a, 5b near the bolt hole 6, the height of the auxiliary bead 5b on the combustion chamber hole 2 side may be 0 (flat). In this embodiment, although not shown, the auxiliary beads 5a, 5b are not illustrated. 5
The height of b is gradually increased from the vicinity of the bolt holes 6 toward the space between the bolt holes 6 so as to increase the height along the circumferential direction of the combustion chamber hole 2. In FIG. 1, reference numeral 7 denotes a water hole, and 8 denotes an oil hole.
【００１２】そして、かかる構成の金属ガスケットをシ
リンダブロックとシリンダヘッドとの間に介装して締結
ボルトで締め付けると、フルビード３、補助ビード５
ａ，５ｂの順に板厚方向に圧縮変形し、締め付け終了時
においては、シム板４を配置した燃焼室孔２の周囲の厚
肉部分と他の薄肉部分（基板１の外周縁部）との板厚差
により、燃焼室孔２の周囲に面圧が集中してシール条件
が一番厳しいシリンダボア端部周囲に最大荷重が作用
し、該端部周囲のシールがなされる。When the metal gasket having such a configuration is interposed between the cylinder block and the cylinder head and fastened with fastening bolts, the full bead 3 and the auxiliary bead 5
a, 5b are compressed and deformed in the thickness direction in the order of thickness, and at the time of completion of the tightening, the thick portion around the combustion chamber hole 2 in which the shim plate 4 is arranged and another thin portion (the outer peripheral edge of the substrate 1). Due to the difference in plate thickness, the surface pressure concentrates around the combustion chamber hole 2 and a maximum load acts around the end of the cylinder bore where the sealing condition is the strictest, thereby sealing around the end.
【００１３】ここで、この実施の形態では、シム板４を
基板１の燃焼室孔２の周囲にフルビード３を覆うように
配置して他の部分との板厚差を設けているため、従来の
ように、基板ビードの燃焼室孔側にシム板を配置して他
の部分との板厚差を設けた場合に比べて、シリンダボア
端部周囲に作用する最大荷重が低くなる一方で、圧縮変
形したフルビード３の弾性反発力よるシール圧、フルビ
ード３の燃焼室孔２側に設けられた補助ビード５ａのシ
ール圧及び燃焼室孔２から離間する側に設けられた補助
ビード５ｂの弾性反発力によるシール圧によって高温高
圧の燃焼ガスに対して補助ビード５ａによる一次シー
ル、フルビード３による二次シール及び補助ビード５ｂ
による三次シールがなされると共に、補助ビード５ｂに
よるシール圧で水孔７からの冷却水のフルビード３側へ
の浸入を阻止することができる。In this embodiment, the shim plate 4 is arranged around the combustion chamber hole 2 of the substrate 1 so as to cover the full bead 3 so as to provide a difference in plate thickness from other portions. As compared to the case where a shim plate is arranged on the combustion chamber hole side of the substrate bead and a thickness difference from other parts is provided, the maximum load acting around the cylinder bore end is reduced, The sealing pressure due to the elastic repulsion of the deformed full bead 3, the sealing pressure of the auxiliary bead 5a provided on the combustion chamber hole 2 side of the full bead 3, and the elastic repulsion of the auxiliary bead 5b provided on the side separated from the combustion chamber hole 2 Primary seal by auxiliary bead 5a, secondary seal by full bead 3, and auxiliary bead 5b against high temperature and high pressure combustion gas
And the sealing pressure of the auxiliary bead 5b prevents the cooling water from entering the full bead 3 through the water hole 7.
【００１４】また、上述したように、補助ビード５ａ，
５ｂは、ボルト締結時の締め付け力が大きい締結ボルト
のボルト孔６近傍の高さ寸法が、締め付け力が小さい各
ボルト孔６間の高さ寸法より低く設定されて燃焼室孔２
の周方向に沿って抑揚が付けられているため、周方向に
おけるシール圧の均一化を図ることができる。なお、上
記実施の形態では、補助ビード５ａ，５ｂの高さを同一
にした場合を例に採ったが、これに代えて、フルビード
３の燃焼室孔２側に設けられた補助ビード５ａの高さ寸
法を燃焼室孔２から離間する側に設けられた補助ビード
５ｂの高さ寸法より高くするようにしてもよい。このよ
うにすると、ボルト締結位置から離れた位置（面圧が低
くなる側）での補助ビードの圧縮変形量を多くすること
ができるので、補助ビード５ａ，５ｂによる燃焼室孔２
の径方向におけるシール圧の均一化を図ることができ
る。As described above, the auxiliary beads 5a, 5a,
5b, the height of the fastening bolt having a large tightening force at the time of bolt fastening in the vicinity of the bolt hole 6 is set lower than the height between the bolt holes 6 having the small tightening force, so that the combustion chamber hole 2
Since the inflection is provided along the circumferential direction, the sealing pressure in the circumferential direction can be made uniform. In the above embodiment, the case where the heights of the auxiliary beads 5a and 5b are the same is taken as an example. However, instead of this, the height of the auxiliary beads 5a provided on the combustion chamber hole 2 side of the full bead 3 is used. The height dimension may be made higher than the height dimension of the auxiliary bead 5b provided on the side away from the combustion chamber hole 2. By doing so, the amount of compressive deformation of the auxiliary bead at a position distant from the bolt fastening position (on the side where the surface pressure is reduced) can be increased, so that the combustion chamber hole 2 formed by the auxiliary beads 5a and 5b can be increased.
The sealing pressure in the radial direction can be made uniform.
【００１５】また、上記実施の形態では、シム板４の補
助ビード５ａ，５ｂと基板１のフルビード３との間隔を
周方向に沿って略均一にしているが、これに代えて、補
助ビード５ａ，５ｂの周方向の軌跡をボルト孔６近傍は
フルビード３に接近させ、各ボルト孔６間はフルビード
３から離間させることにより、面圧を調整して周方向に
おけるシール圧の均一化を図るようにしてもよい。In the above embodiment, the distance between the auxiliary beads 5a and 5b of the shim plate 4 and the full bead 3 of the substrate 1 is made substantially uniform along the circumferential direction. , 5b are made closer to the full bead 3 in the vicinity of the bolt hole 6 and separated from the full bead 3 between the bolt holes 6, so that the surface pressure is adjusted to make the sealing pressure in the circumferential direction uniform. It may be.
【００１６】更に、上記実施の形態では、フルビード３
の燃焼室孔２側及び燃焼室孔２から離間する側の両方の
側に補助ビード５ａ，５ｂを設けた場合を例に採った
が、必ずしもこのようにする必要はなく、補助ビード５
ａ，５ｂの内のいずれか一方を設けるようにしてもよ
い。この場合、補助ビード５ａを設ける方が好ましい
が、フルビード３の燃焼室孔２側の基板幅が狭い場合に
は、補助ビード５ｂのみを設けるようにしてもよい。Further, in the above embodiment, the full bead 3
The case where the auxiliary beads 5a and 5b are provided on both the combustion chamber hole 2 side and the side separated from the combustion chamber hole 2 is taken as an example, but it is not always necessary to do so.
a or 5b may be provided. In this case, it is preferable to provide the auxiliary bead 5a. However, when the substrate width of the full bead 3 on the combustion chamber hole 2 side is narrow, only the auxiliary bead 5b may be provided.
【００１７】更に、上記実施の形態では、補助ビード５
ａ，５ｂ共にフルビードとした場合を例に採ったが、必
ずしもフルビードにする必要はなく、例えば図３に示す
ように、何れか一方をステップビード（補助ビード５ｂ
側）としてもよく、また、両方をステップビードとして
もよい。次に、図４〜図１２を参照して、本発明の他の
実施の形態である金属ガスケットを説明する。Further, in the above embodiment, the auxiliary beads 5
Although the case where both a and 5b are full beads is taken as an example, it is not always necessary to use full beads. For example, as shown in FIG. 3, one of them is a step bead (auxiliary bead 5b).
Side) or both may be step beads. Next, a metal gasket according to another embodiment of the present invention will be described with reference to FIGS.
【００１８】図４〜図７は上下の二枚の基板１間にシム
板４を配置した例であり、上下の基板１のフルビード３
は凸部側が互いに対向配置されている。図４はシム板４
のフルビード３の燃焼室孔２側のみに補助ビード５ａを
設けた例であり、該補助ビード５ａはステップビードと
されている。図５はシム板４のフルビード３の燃焼室孔
２側及び燃焼室孔２から離間する側の両方に補助ビード
５ａ，５ｂを設けた例であり、各補助ビード５ａ，５ｂ
は共にステップビードとされ、且つ、補助ビード５ａの
高さが補助ビード５ｂより高くなっている。図６も同様
に、シム板４のフルビード３の燃焼室孔２側及び燃焼室
孔２から離間する側の両方に補助ビード５ａ，５ｂを設
けた例であり、各補助ビード５ａ，５ｂは共にフルビー
ドとされ、且つ、補助ビード５ａの高さが補助ビード５
ｂより高くなっている。図７も同様に、シム板４のフル
ビード３の燃焼室孔２側及び燃焼室孔２から離間する側
の両方に補助ビード５ａ，５ｂを設けた例であり、補助
ビード５ａがフルビードとされ、補助ビード５ｂがステ
ップビードとされている。FIGS. 4 to 7 show an example in which a shim plate 4 is arranged between two upper and lower substrates 1.
Are arranged with their convex portions facing each other. Fig. 4 shows the shim plate 4.
This is an example in which the auxiliary bead 5a is provided only on the combustion chamber hole 2 side of the full bead 3 and the auxiliary bead 5a is a step bead. FIG. 5 shows an example in which auxiliary beads 5a and 5b are provided on both sides of the full bead 3 of the shim plate 4 on the side of the combustion chamber hole 2 and on the side away from the combustion chamber hole 2, and the auxiliary beads 5a and 5b are provided.
Are both step beads, and the height of the auxiliary bead 5a is higher than that of the auxiliary bead 5b. 6 also shows an example in which auxiliary beads 5a and 5b are provided on both the side of the full bead 3 of the shim plate 4 on the side of the combustion chamber hole 2 and the side away from the combustion chamber hole 2, and the auxiliary beads 5a and 5b are both It is a full bead, and the height of the auxiliary bead 5a is
b. Similarly, FIG. 7 shows an example in which auxiliary beads 5a and 5b are provided on both sides of the full bead 3 of the shim plate 4 on the side of the combustion chamber hole 2 and on the side away from the combustion chamber hole 2, and the auxiliary bead 5a is a full bead. The auxiliary bead 5b is a step bead.
【００１９】図８及び図９は上下の二枚の基板１間にシ
ム板４を配置した例であるが、上下の基板１のフルビー
ド３の凹部側が互いに対向配置されている。図８はシム
板４のフルビード３の燃焼室孔２側のみに補助ビード５
ａを設けた例であり、該補助ビード５ａはフルビードと
されている。図９はシム板４のフルビード３の燃焼室孔
２側及び燃焼室孔２から離間する側の両方に補助ビード
５ａ，５ｂを設けた例であり、各補助ビード５ａ，５ｂ
は共にフルビードとされ、且つ、補助ビード５ａの高さ
が補助ビード５ｂより高くなっている。FIGS. 8 and 9 show an example in which the shim plate 4 is arranged between the upper and lower substrates 1. The concave portions of the full beads 3 of the upper and lower substrates 1 are arranged to face each other. FIG. 8 shows an auxiliary bead 5 provided only on the side of the combustion chamber hole 2 of the full bead 3 of the shim plate 4.
In this example, the auxiliary bead 5a is a full bead. FIG. 9 shows an example in which auxiliary beads 5a, 5b are provided on both sides of the full bead 3 of the shim plate 4 on the side of the combustion chamber hole 2 and on the side separated from the combustion chamber hole 2, and the auxiliary beads 5a, 5b are provided.
Are full beads, and the height of the auxiliary beads 5a is higher than that of the auxiliary beads 5b.
【００２０】図１０〜図１２は上下の二枚の基板１間に
シム板４及び厚さ調整用の副板１０を配置した例であ
り、上下の基板１のフルビード３は凸部側が互いに対向
配置されている。図１０は副板１０のシム板４の幅に対
応する範囲にシム板４の板厚に応じて板厚の略１／３〜
１／２の段差を上方向に設けて、副板１０の下面に形成
された段差凹部１１にシム板４嵌合し、該シム板４のフ
ルビード３の燃焼室孔２側のみに補助ビード５ａを設け
た例であり、該補助ビード５ａはフルビードとされてい
る。図１１は副板１０のシム板４の幅に対応する範囲に
シム板４の板厚に応じて板厚の略１／３〜１／２の段差
を下方向に設けて、副板１０の上面に形成された段差凹
部１２にシム板４を嵌合し、該シム板４のフルビード３
の燃焼室孔２側及び該燃焼室孔２から離間する側の両方
に補助ビード５ａ，５ｂを設けた例であり、各補助ビー
ド５ａ，５ｂは共にフルビードとされ、且つ、補助ビー
ド５ａの高さが補助ビード５ｂより高くなっている。図
１２は副板１０のシム板４の幅に対応する範囲の上下面
にそれぞれシム板４を配置し、該シム板４のフルビード
３の燃焼室孔２側及び該燃焼室孔２から離間する側の両
方に補助ビード５ａ，５ｂを設けた例であり、各補助ビ
ード５ａ，５ｂは共にフルビードとされ、且つ、補助ビ
ード５ａの高さが補助ビード５ｂより高くなっている。FIGS. 10 to 12 show an example in which a shim plate 4 and a thickness-adjusting sub-plate 10 are arranged between two upper and lower substrates 1. The full beads 3 of the upper and lower substrates 1 have their convex portions facing each other. Are located. FIG. 10 shows a range corresponding to the width of the shim plate 4 of the sub-plate 10 in the range corresponding to approximately 1/3 of the thickness of the shim plate 4.
A half step is provided in the upward direction, and the shim plate 4 is fitted into the step recess 11 formed on the lower surface of the sub-plate 10, and the auxiliary bead 5 a is provided only in the combustion chamber hole 2 side of the full bead 3 of the shim plate 4. The auxiliary bead 5a is a full bead. FIG. 11 shows that, in a range corresponding to the width of the shim plate 4 of the sub-plate 10, a step of approximately ３ to の of the plate thickness is provided downward according to the thickness of the shim plate 4, The shim plate 4 is fitted into the stepped recess 12 formed on the upper surface, and the full bead 3 of the shim plate 4 is
This is an example in which auxiliary beads 5a and 5b are provided on both the side of the combustion chamber hole 2 and the side separated from the combustion chamber hole 2. Each of the auxiliary beads 5a and 5b is a full bead and the height of the auxiliary bead 5a is high. Is higher than the auxiliary bead 5b. FIG. 12 shows that the shim plates 4 are arranged on the upper and lower surfaces of the auxiliary plate 10 in a range corresponding to the width of the shim plate 4, and the shim plate 4 is separated from the combustion chamber hole 2 side of the full bead 3 of the shim plate 4. This is an example in which auxiliary beads 5a and 5b are provided on both sides. Each of the auxiliary beads 5a and 5b is a full bead, and the height of the auxiliary bead 5a is higher than that of the auxiliary bead 5b.
【００２１】[0021]
【発明の効果】上記の説明から明らかなように、請求項
１又は２の発明によれば、燃焼室孔の周縁に過大な面圧
をかけなくても燃焼室孔の全周にわたって十分なシール
性能を得ることができるという効果が得られる。請求項
３の発明では、請求項２の発明に加えて、ボルト締結位
置から離れた位置（面圧が低くなる側）での補助ビード
の圧縮変形量を多くすることができるので、基板ビード
の内外側に設けた補助ビードの燃焼室孔の径方向におけ
るシール圧の均一化を図ることができるという効果が得
られる。As is apparent from the above description, according to the first or second aspect of the present invention, a sufficient seal can be provided over the entire circumference of the combustion chamber hole without applying excessive surface pressure to the periphery of the combustion chamber hole. The effect that performance can be obtained is obtained. According to the third aspect of the present invention, in addition to the second aspect of the present invention, the amount of compressive deformation of the auxiliary bead at a position distant from the bolt fastening position (on the side where the surface pressure is reduced) can be increased. The effect is obtained that the sealing pressure in the radial direction of the combustion chamber hole of the auxiliary bead provided on the inner and outer sides can be made uniform.
【００２２】請求項４の発明では、請求項１〜３のいず
れか一項の発明に加えて、補助ビードの周方向のシール
圧の均一化を図ることができるという効果が得られる。According to the fourth aspect of the invention, in addition to any one of the first to third aspects of the invention, an effect is obtained that the sealing pressure in the circumferential direction of the auxiliary bead can be made uniform.
【図１】本発明の実施の形態の一例である金属ガスケッ
トを説明するための要部平面図である。FIG. 1 is a plan view of a main part for describing a metal gasket as an example of an embodiment of the present invention.
【図２】図１の要部断面図である。FIG. 2 is a sectional view of a main part of FIG.
【図３】本発明の他の実施の形態を説明するための説明
的断面図である。FIG. 3 is an explanatory cross-sectional view for explaining another embodiment of the present invention.
【図４】本発明の他の実施の形態を説明するための説明
的断面図である。FIG. 4 is an explanatory cross-sectional view for explaining another embodiment of the present invention.
【図５】本発明の他の実施の形態を説明するための説明
的断面図である。FIG. 5 is an explanatory cross-sectional view for explaining another embodiment of the present invention.
【図６】本発明の他の実施の形態を説明するための説明
的断面図である。FIG. 6 is an explanatory cross-sectional view for explaining another embodiment of the present invention.
【図７】本発明の他の実施の形態を説明するための説明
的断面図である。FIG. 7 is an explanatory sectional view for explaining another embodiment of the present invention.
【図８】本発明の他の実施の形態を説明するための説明
的断面図である。FIG. 8 is an explanatory cross-sectional view for explaining another embodiment of the present invention.
【図９】本発明の他の実施の形態を説明するための説明
的断面図である。FIG. 9 is an explanatory cross-sectional view for explaining another embodiment of the present invention.
【図１０】本発明の他の実施の形態を説明するための説
明的断面図である。FIG. 10 is an explanatory cross-sectional view for explaining another embodiment of the present invention.
【図１１】本発明の他の実施の形態を説明するための説
明的断面図である。FIG. 11 is an explanatory cross-sectional view for explaining another embodiment of the present invention.
【図１２】本発明の他の実施の形態を説明するための説
明的断面図である。FIG. 12 is an explanatory cross-sectional view for explaining another embodiment of the present invention.
１…基板 ２…燃焼室孔 ３…フルビード（基板ビード） ４…シム板 ５ａ，５ｂ…補助ビード ６…ボルト孔 DESCRIPTION OF SYMBOLS 1 ... Substrate 2 ... Combustion chamber hole 3 ... Full bead (substrate bead) 4 ... Shim plate 5a, 5b ... Auxiliary bead 6 ... Bolt hole
Claims (4)
板と、該基板より薄肉に形成されて前記基板に積層され
たシム板とを備え、シリンダブロックとシリンダヘッド
との接合面間に介装して締結ボルトで締め付けることに
より、前記接合面間をシールするようにした金属ガスケ
ットにおいて、 前記シム板を前記燃焼室孔の周囲に前記基板のビードを
覆うように配置し、且つ、該基板のビードの前記燃焼室
孔側及び該燃焼室孔から離間する側の内の少なくとも一
方の側の前記シム板に補助ビードを設けたことを特徴と
する金属ガスケット。1. A substrate provided with a bead around a combustion chamber hole, and a shim plate formed thinner than the substrate and laminated on the substrate, wherein a shim plate is provided between the cylinder block and the cylinder head. In a metal gasket that is interposed and fastened with a fastening bolt to seal between the joining surfaces, the shim plate is disposed around the combustion chamber hole so as to cover a bead of the substrate, and A metal gasket, wherein an auxiliary bead is provided on the shim plate on at least one of the combustion chamber hole side of the substrate bead and the side separated from the combustion chamber hole.
記燃焼室孔側及び該燃焼室孔から離間する側の両方に設
けた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 auxiliary beads are provided on both the side of the bead of the substrate and the side facing away from the combustion chamber hole.
置された補助ビードの高さを該燃焼室孔から離間する側
に配置された補助ビードより高くしたことを特徴とする
請求項２記載の金属ガスケット。3. An auxiliary bead disposed on the side of the bead of the substrate on the side of the combustion chamber hole has a height higher than that of an auxiliary bead disposed on a side away from the combustion chamber hole. The described metal gasket.
孔の周方向に沿って変化させたことを特徴とする請求項
１〜３のいずれか一項に記載の金属ガスケット。4. The metal gasket according to claim 1, wherein a height dimension of the auxiliary bead is changed along a circumferential direction of the combustion chamber hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000181193A JP4011264B2 (en) | 2000-06-16 | 2000-06-16 | Metal gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000181193A JP4011264B2 (en) | 2000-06-16 | 2000-06-16 | Metal gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002005292A true JP2002005292A (en) | 2002-01-09 |
| JP4011264B2 JP4011264B2 (en) | 2007-11-21 |
Family
ID=18682164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000181193A Expired - Lifetime JP4011264B2 (en) | 2000-06-16 | 2000-06-16 | Metal gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4011264B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10358919A1 (en) * | 2003-12-16 | 2005-07-21 | Federal-Mogul Sealing Systems Gmbh | Metallic cylinder head gasket without distance |
| EP1777443A1 (en) | 2005-10-20 | 2007-04-25 | Japan Metal Gasket Co., Ltd. | Gasket |
| EP1777442A1 (en) * | 2005-10-24 | 2007-04-25 | Japan Metal Gasket Co., Ltd. | Gasket |
| KR100911656B1 (en) * | 2008-07-24 | 2009-08-11 | 동아공업 주식회사 | Gasket with sealing structure among bore |
| JP2010038299A (en) * | 2008-08-06 | 2010-02-18 | Japan Metal Gasket Co Ltd | Metal gasket |
-
2000
- 2000-06-16 JP JP2000181193A patent/JP4011264B2/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10358919A1 (en) * | 2003-12-16 | 2005-07-21 | Federal-Mogul Sealing Systems Gmbh | Metallic cylinder head gasket without distance |
| DE10358919B4 (en) * | 2003-12-16 | 2006-02-02 | Federal-Mogul Sealing Systems Gmbh | Metallic cylinder head gasket without distance |
| EP1735553B1 (en) * | 2003-12-16 | 2012-06-06 | Federal-Mogul Sealing Systems GmbH | Metal cylinder head gasket without a spacing layer |
| EP1777443A1 (en) | 2005-10-20 | 2007-04-25 | Japan Metal Gasket Co., Ltd. | Gasket |
| JP2007139177A (en) * | 2005-10-20 | 2007-06-07 | Japan Metal Gasket Co Ltd | Gasket |
| US7815197B2 (en) | 2005-10-20 | 2010-10-19 | Japan Metal Gasket Co., Ltd. | Gasket |
| EP1777442A1 (en) * | 2005-10-24 | 2007-04-25 | Japan Metal Gasket Co., Ltd. | Gasket |
| US7909337B2 (en) | 2005-10-24 | 2011-03-22 | Japan Metal Gasket Co., Ltd. | Gasket |
| KR100911656B1 (en) * | 2008-07-24 | 2009-08-11 | 동아공업 주식회사 | Gasket with sealing structure among bore |
| JP2010038299A (en) * | 2008-08-06 | 2010-02-18 | Japan Metal Gasket Co Ltd | Metal gasket |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4011264B2 (en) | 2007-11-21 |
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