JP2001173791A - Metal gasket - Google Patents
Metal gasketInfo
- Publication number
- JP2001173791A JP2001173791A JP36439199A JP36439199A JP2001173791A JP 2001173791 A JP2001173791 A JP 2001173791A JP 36439199 A JP36439199 A JP 36439199A JP 36439199 A JP36439199 A JP 36439199A JP 2001173791 A JP2001173791 A JP 2001173791A
- Authority
- JP
- Japan
- Prior art keywords
- metal gasket
- bead
- peripheral portion
- combustion chamber
- chamber hole
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 title claims abstract description 26
- 239000011324 bead Substances 0.000 claims abstract description 62
- 230000002093 peripheral effect Effects 0.000 claims abstract description 54
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims description 46
- 239000003566 sealing material Substances 0.000 claims description 27
- 239000000565 sealant Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、燃焼室孔の周縁部
が他の部分より厚くされると共に、該周縁部の周囲の表
裏面にそれぞれ凹状のビード部が形成され、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
ルトで締め付ける際に前記周縁部に最大荷重が作用する
ようにして前記接合面間をシールするようにした少なく
とも二枚の基板を備えた金属ガスケットに関する。BACKGROUND OF THE INVENTION The present invention relates to a cylinder block, a cylinder head and a cylinder head in which a peripheral portion of a combustion chamber hole is made thicker than other portions, and a concave bead portion is formed on each of the front and rear surfaces around the peripheral portion. A metal gasket provided with at least two substrates, wherein a maximum load is applied to the peripheral edge portion when a fastening bolt is interposed between the joining surfaces to seal the joining surface.
【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、例えば図１４に示すように、全面がシリコン、フッ
素ゴム、ＮＢＲ等のシール材Ｓで被覆された上下二枚の
基板１，２を備え、上基板１の燃焼室孔３側の端部を下
方に折り返すと共に、上基板１より薄い下基板２の外周
縁部を上方に折り返し、これらの基板１，２を積層する
ことにより、該燃焼室孔３の周縁部４を他の部分より厚
くして板厚差を設けたものが知られている。2. Description of the Related Art As a conventional metal gasket of this type, for example, as shown in FIG. 14, two upper and lower substrates 1 and 2 whose entire surfaces are covered with a sealing material S such as silicon, fluorine rubber, NBR, etc. are provided. By folding back the end of the upper substrate 1 on the side of the combustion chamber hole 3, the outer peripheral edge of the lower substrate 2 thinner than the upper substrate 1 is folded upward, and the substrates 1 and 2 are laminated to form the combustion. It is known that the peripheral portion 4 of the chamber hole 3 is made thicker than other portions to provide a difference in plate thickness.
【０００３】そして、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周縁部４に最も面圧が集中するよう
にしてシリンダボア端部周縁に最大荷重をかけてシール
すると共に、周縁部４の周囲の表裏面に形成された凹状
のフルビード５，６や外周縁部の内側の表裏面に形成さ
れた凹状のフルビード７，８の全屈を防止するようにし
ている。[0003] Due to such a difference in plate thickness, when interposed between the joining surfaces of the cylinder head and the cylinder block and tightened with fastening bolts, the surface pressure is concentrated on the peripheral edge portion 4 so that the maximum pressure is applied to the peripheral edge of the cylinder bore end. Sealing by applying a load, and preventing the full bending of the concave full beads 5, 6 formed on the front and back surfaces around the peripheral edge portion 4 and the concave full beads 7, 8 formed on the front and back surfaces inside the peripheral edge portion. I am trying to do it.
【０００４】[0004]
【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、燃焼室孔３の周縁部４
から漏れた微少な燃焼ガス、水孔から流出した冷却水及
び油孔から流出したエンジンオイル等が基板１，２に被
覆されたシール材Ｓに直接接触してしまい、また、エン
ジン（アルミニウム）とガスケット（ステンレス鋼、一
般鋼）の材質の違いによる熱膨張差で起こるずれや、エ
ンジンの運転・停止の繰り返しにより起こるずれの繰り
返しも手伝ってシール材Ｓが剥離したり、フルビード
５，６，７，８の劣化が促進され又シール材Ｓの剥離し
たビードの曲げＲ部がエンジンの稼働による爆発振動で
デッキ面と擦れてフレッチング（擦り傷）ができて曲げ
Ｒ部の疲労破壊を引き起していまい、更には、フルビー
ド６が対向するエンジン面に鋳巣穴等が存在する場合
に、この部分のシールは線シールのため、シール線が組
立時あるいはエンジン稼働中にエンジンとガスケットの
材質の違いによる熱膨張差でずれて、ビードが巣穴を跨
いだり巣穴の上に位置したときには、巣穴からフルビー
ド６の凹部内に燃焼ガス、冷却水、オイル等が漏れ出し
てしまうことがあり、長期にわたって安定したシール性
能を確保することができないという不都合がある。 ま
た、上下の基板１，２にシール材Ｓを被覆する際の寸法
精度や接着強度を考慮する必要があるばかりか、全面を
被覆するためシール材料の量が多くなってコスト高にな
るという不都合がある。However, in the above-mentioned conventional metal gasket, the peripheral portion 4 of the combustion chamber hole 3 is not provided.
Small combustion gas leaked from the engine, cooling water flowing out of the water hole, engine oil flowing out of the oil hole, etc., come into direct contact with the sealing material S coated on the substrates 1 and 2, and the engine (aluminum) The seal material S peels off due to the difference in thermal expansion caused by the difference in the material of the gasket (stainless steel, general steel) and the difference in displacement caused by repeated operation and stop of the engine, and the full beads 5, 6, 7 , 8 is accelerated and the bend R of the bead from which the sealing material S has peeled off rubs against the deck surface due to the explosion vibration caused by the operation of the engine, causing fretting (scratches) and causing fatigue fracture of the bend R. In addition, if there is a cast hole or the like on the engine surface facing the full bead 6, the seal at this portion is a line seal, so that the seal wire is not used during assembly or when the engine is used. When the bead straddles the burrow or is located on the burrow due to the difference in thermal expansion due to the difference in the material of the engine and the gasket during operation, the combustion gas, cooling water, and oil enter the recess of the full bead 6 from the burrow. Etc. may leak out, and there is a disadvantage that stable sealing performance cannot be ensured for a long period of time. In addition, it is necessary to consider not only the dimensional accuracy and the adhesive strength when covering the upper and lower substrates 1 and 2 with the sealing material S, but also because the entire surface is covered, the amount of the sealing material increases and the cost increases. There is.
【０００５】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、低コストで安定したシール性能を長
期間に渡って確保す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。[0005] The present invention has been made in order to solve such inconveniences, and an object of the present invention is to provide a metal gasket capable of ensuring stable sealing performance at low cost over a long period of time.
【０００６】[0006]
【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
縁部が他の部分より厚くされると共に、該周縁部の周囲
の表裏面にそれぞれ凹状のビード部が形成され、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際に前記周縁部に最大荷重が作用
するようにして前記接合面間をシールするようにした少
なくとも二枚の基板を備えた金属ガスケットにおいて、
前記ビード部に弾性シール材を該ビード部の凹状空間を
満たすように充填し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 peripheral portion of a combustion chamber hole which is thicker than other portions, and has a front and rear surface surrounding the peripheral portion. A concave bead portion is formed so that a maximum load is applied to the peripheral portion when the bolt is tightened with a fastening bolt interposed between the joining surfaces of the cylinder block and the cylinder head so as to seal between the joining surfaces. In a metal gasket comprising at least two substrates,
The bead portion is filled with an elastic sealing material so as to fill the concave space of the bead portion.
【０００７】請求項２に係る金属ガスケットは、燃焼室
孔の周縁部が他の部分より厚くされると共に、該周縁部
の周囲の表裏面にそれぞれ凹状のビード部が形成され、
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際に前記周縁部に最大荷重
が作用するようにして前記接合面間をシールするように
した少なくとも二枚の基板を備えた金属ガスケットにお
いて、前記ビード部に該ビード部の凹状空間の体積に応
じた量の弾性シール材を装填したことを特徴とする。In the metal gasket according to the second aspect, the peripheral portion of the combustion chamber hole is made thicker than other portions, and concave bead portions are formed on the front and back surfaces around the peripheral portion, respectively.
At least two substrates are provided so as to apply a maximum load to the peripheral portion and seal between the joining surfaces when interposed between the joining surfaces of the cylinder block and the cylinder head and tightened with fastening bolts. In the metal gasket described above, the bead portion is loaded with an elastic sealing material in an amount corresponding to the volume of the concave space of the bead portion.
【０００８】請求項３に係る金属ガスケットは、請求項
１又は２において、前記表面側のビード部と前記裏面側
のビード部とを前記燃焼室孔の径方向に互いにずらして
配置したことを特徴とする。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、前記周
縁部の板厚が前記燃焼室孔の周方向に沿って変化するよ
うに板厚に抑揚を付けたことを特徴とする。According to a third aspect of the present invention, in the metal gasket according to the first or second aspect, the bead portion on the front side and the bead portion on the back side are arranged so as to be shifted from each other in a radial direction of the combustion chamber hole. And The metal gasket according to claim 4 is the metal gasket according to any one of claims 1 to 3, wherein the plate thickness of the peripheral edge portion is varied so as to change along the circumferential direction of the combustion chamber hole. It is characterized by.
【０００９】[0009]
【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Ａ−Ａ線断面図、図３及び図４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、図５は本発
明の他の態様の実施の形態を説明するための説明的断面
図、図６〜図１３は基板又は副板の変形例を説明するた
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 taken along line AA of FIG. 1, FIGS. 3 and 4 are explanatory sectional views for explaining another embodiment of the present invention, and FIG. 5 is an embodiment of another embodiment of the present invention. 6 to 13 are explanatory sectional views for explaining a modification of the substrate or the sub-plate.
【００１０】図１及び図２を参照して、この金属ガスケ
ットは、例えばステンレス鋼板などの金属板からなる上
下二枚の基板１，２を備えており、上基板１は下基板２
に比べて厚肉になっている。上基板１の燃焼室孔３側の
端部は下方に折り返されて上下方向に二枚配置され、一
方、下基板２の外周縁部は上方に折り返されて上下方向
に二枚配置されている。そして、これらの基板１，２を
積層することにより、燃焼室孔３の周縁部４が他の部分
より厚くされて板厚差が設けられている。Referring to FIGS. 1 and 2, the metal gasket includes two upper and lower substrates 1 and 2 made of a metal plate such as a stainless steel plate.
It is thicker than. The end of the upper substrate 1 on the side of the combustion chamber hole 3 is folded downward and is arranged vertically in two pieces, while the outer peripheral edge of the lower substrate 2 is folded upward and arranged in two pieces vertically. . Then, by laminating the substrates 1 and 2, the peripheral portion 4 of the combustion chamber hole 3 is made thicker than the other portions, so that a plate thickness difference is provided.
【００１１】また、上基板１の周縁部４の周囲の上面及
び下基板２の周縁部４の周囲の下面には、それぞれ凹状
のフルビード５及び６が形成され、上基板１の外周縁部
より内側の上面及び下基板２の外周縁部より内側の下面
には、それぞれ水孔から流出した冷却水や油孔から流出
したエンジンオイル等をシールする凹状のフルビード７
及び８が形成されている。なお、図１において、符号７
０は水孔、７１はオイル孔である。Further, concave full beads 5 and 6 are formed on the upper surface around the peripheral portion 4 of the upper substrate 1 and on the lower surface around the peripheral portion 4 of the lower substrate 2, respectively. A concave full bead 7 for sealing the cooling water flowing out of the water hole or the engine oil flowing out of the oil hole is provided on the inner upper surface and the lower surface inside the outer peripheral edge of the lower substrate 2, respectively.
And 8 are formed. Note that in FIG.
0 is a water hole and 71 is an oil hole.
【００１２】ここで、この実施の形態では、フルビード
５，６，７，８にシリコン、フッ素ゴム、ＮＢＲ等の耐
熱性を有する弾性シール材Ｓが各ビードの凹状空間を満
たすように充填されており、これにより、各ビードの板
厚方向の弾性変形を可能にしている。なお、フルビード
に弾性シール材Ｓを充填する方法としては、プリント、
型モールド、ディスペンサー塗布方法等が挙げられる。Here, in this embodiment, the full beads 5, 6, 7, and 8 are filled with a heat-resistant elastic sealing material S such as silicon, fluororubber, or NBR so as to fill the concave space of each bead. As a result, elastic deformation of each bead in the plate thickness direction is enabled. In addition, as a method of filling the elastic beads S into the full bead, printing,
A mold, a dispenser coating method, and the like can be given.
【００１３】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５，６、フルビード
７，８、周縁部４の順に板厚方向に圧縮変形し、該締め
付けは板厚が変化しない外周縁部の板厚まで行われる。
締め付け終了時においては、最も板厚の厚い周縁部４と
外周縁部との板厚差により、該周縁部４に最も面圧が集
中してシール条件が一番厳しいシリンダボア端部周縁に
最大荷重が作用して該端部周縁のシールがなされると共
に、フルビード５，６，７，８の全屈が防止される。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 beads 5, 6, the full beads 7, 8 and the peripheral portion 4 are compressed in the thickness direction in this order. It is deformed and the tightening is performed up to the thickness of the outer peripheral edge portion where the thickness does not change.
At the end of tightening, due to the difference in plate thickness between the peripheral portion 4 having the largest thickness and the peripheral portion, the maximum surface pressure is concentrated on the peripheral portion 4 and the maximum load is applied to the peripheral edge of the cylinder bore end where sealing conditions are the strictest. Acts to seal the peripheral edge of the end portion and prevent the full beads 5, 6, 7, and 8 from bending.
【００１４】また、フルビード５，６、フルビード７，
８はシール材Ｓと共に板厚方向に変形し、締め付け完了
時においては、各ビードの弾性反発力とシール材Ｓの弾
性反発力とが共働して強力なシール圧で上下両面を完全
にシールし、更に、エンジンの振動振幅に対しても変形
追従する。このとき、シール材Ｓはビードの凹状空間内
に充填されているため、万が一周縁部４から微少な燃焼
ガスが漏れたとしても該燃焼ガスがシール材Ｓに直接接
触するのを防止することができると共に、水孔から流出
した冷却水や油孔から流出したエンジンオイルについて
もシール材Ｓに直接接触するのを防止することができ、
また、エンジン（アルミニウム）とガスケット（ステン
レス鋼、一般鋼）の材質の違いによる熱膨張差で起こる
ずれや、エンジンの運転・停止の繰り返しにより起こる
ずれの繰り返しが生じても、基板のビードで覆われたシ
ール材はビードで保護され又シール幅も２〜４ｍｍあっ
て傷や巣穴のずれをカバーでき、また、シール材Ｓが剥
離するのを防止することができると共に、フルビード
５，６，７，８の曲げＲ部の疲労破壊を抑制することが
でき、更には、フルビード６が対向するエンジン面に鋳
巣穴等が存在する場合においても、巣穴がビード幅内に
存在してエンジンとガスケットの熱膨張差でずれる範囲
内であれば巣穴からビードの凹部内に燃焼ガスが漏れ出
してしまうのを防止することができ、この結果、長期に
わたって安定したシール性能を確保することができる。Also, full beads 5, 6 and full beads 7,
8 deforms in the thickness direction together with the sealing material S, and when the tightening is completed, the elastic repulsive force of each bead and the elastic repulsive force of the sealing material S cooperate to completely seal the upper and lower surfaces with a strong sealing pressure. Further, the deformation follows the vibration amplitude of the engine. At this time, since the sealing material S is filled in the concave space of the bead, it is possible to prevent the combustion gas from directly contacting the sealing material S even if a small amount of combustion gas leaks from the peripheral portion 4. It is also possible to prevent the cooling water flowing out of the water hole and the engine oil flowing out of the oil hole from directly contacting the sealing material S,
Also, even if the displacement caused by the difference in thermal expansion due to the difference in the material of the engine (aluminum) and the gasket (stainless steel, general steel) or the displacement caused by the repeated start / stop of the engine occurs, it is covered with the bead of the substrate. The sealed sealing material is protected by a bead and has a sealing width of 2 to 4 mm to cover the scratches and the displacement of the burrows. Further, the sealing material S can be prevented from peeling off and full beads 5, 6, Fatigue fracture of the bending R portions of the ridges 7 and 8 can be suppressed. Further, even when a burrow exists in the engine surface where the full bead 6 is opposed, the burrow exists within the bead width. If it is within the range of deviation from the thermal expansion difference of the gasket, it is possible to prevent the combustion gas from leaking from the burrow into the concave portion of the bead, and as a result, a stable seal can be maintained for a long time. It can be ensured le performance.
【００１５】また、上下の基板１，２のフルビードにシ
ール材Ｓを充填するようにしているので、シール材Ｓの
寸法精度を考慮する必要がなく、接着強度についても比
較的弱くて済み、また、フルビードの凹部のみにシール
材Ｓを充填すれば足りるためシール材Ｓを全面被覆する
場合に比べてシール材の量を少なくすることができ、こ
の結果、コスト低減を図ることができる。Further, since the sealing material S is filled in the full beads of the upper and lower substrates 1 and 2, there is no need to consider the dimensional accuracy of the sealing material S, and the bonding strength can be relatively weak. It is sufficient to fill only the recess of the full bead with the sealing material S, so that the amount of the sealing material can be reduced as compared with the case where the sealing material S is entirely covered, and as a result, the cost can be reduced.
【００１６】なお、図３は、上下の基板１，２のエンジ
ンに接触する面に減摩剤（例えば二硫化モリブデンに樹
脂を混入させたもの等）９を塗布してエンジンとガスケ
ットの材質の違いによる熱膨張差で起こるフレッチング
を防止するようにした例を示す。また、図４は、上基板
１側のフルビード５，７と下基板２側のフルビード６，
８とを燃焼室孔３の径方向に互いにずらして配置した例
であり、このようにすると、ビードの板厚方向の変形量
を大きくとることができるので、ビードの高さを高くし
てシール材の充填量を多くすることができ、この結果、
より大きなシール圧を確保することができる。FIG. 3 shows that a lubricant (for example, molybdenum disulfide mixed with a resin) 9 is applied to the surfaces of the upper and lower substrates 1 and 2 which are in contact with the engine, so that the materials of the engine and the gasket are changed. An example is shown in which fretting caused by a difference in thermal expansion due to a difference is prevented. FIG. 4 shows full beads 5 and 7 on the upper substrate 1 side and full beads 6 and 7 on the lower substrate 2 side.
8 are arranged so as to be shifted from each other in the radial direction of the combustion chamber hole 3. In this case, the amount of deformation of the bead in the plate thickness direction can be increased. The filling amount of the material can be increased, and as a result,
A larger sealing pressure can be secured.
【００１７】更に、図５は、フルビード５，６，７，８
にビードの凹状空間の体積に応じた量の弾性シール材Ｓ
を装填した他の態様の例を示す。この態様では、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た状態においては、図２
に示すものと同様にシール材Ｓが大きな弾性反発力を有
してビードの凹状空間を埋めつくすように充填され、上
記実施の形態と同様の作用効果を得ることができる。FIG. 5 shows full beads 5, 6, 7, 8
The amount of the elastic sealing material S corresponding to the volume of the concave space of the bead
5 shows an example of another embodiment in which is loaded. In this embodiment, when the metal gasket is interposed between the cylinder block and the cylinder head and fastened with fastening bolts, FIG.
The sealing material S is filled so as to fill the concave space of the bead with a large elastic repulsive force as in the case shown in (1), and the same operation and effect as in the above embodiment can be obtained.
【００１８】次に、図６〜図１３を参照して基板の変形
例を説明する。まず、図６は上下の基板１，２間に所定
厚の副板１１を介在させてガスケットの板厚を調整する
ようにした例であり、副板１１には周縁部４と外周縁部
との板厚差の半分の段差１２が設けられている。図７は
上基板１の外周縁部より内側の上面及び下基板２の外周
縁部より内側の下面に、フルビード７，８に代えて、ス
テップ状のハーフビード１３，１４を形成して、各ビー
ド１３，１４の凹状空間にシール材Ｓを充填した例であ
る。Next, a modified example of the substrate will be described with reference to FIGS. First, FIG. 6 shows an example in which a sub-plate 11 having a predetermined thickness is interposed between the upper and lower substrates 1 and 2 to adjust the thickness of the gasket. The sub-plate 11 has a peripheral portion 4 and an outer peripheral portion. Is provided with a step 12 which is half of the plate thickness difference. FIG. 7 shows that stepped half beads 13 and 14 are formed on the upper surface inside the outer peripheral edge of the upper substrate 1 and the lower surface inside the outer peripheral edge of the lower substrate 2 in place of the full beads 7 and 8 so that each bead is formed. This is an example in which the sealing material S is filled in the concave spaces 13 and 14.
【００１９】図８は上下の基板２１，２２の間に副板２
３を介在させた例であり、上下の基板２１，２２を同じ
板厚とし、燃焼室孔３側の端部及び外周縁部に折り返し
部分を設けない代わりに、副板２３の燃焼室孔３側の端
部及び外周縁部をそれぞれ上方に折り返して該副板２３
の燃焼室孔３側の端部の折り返し部分の内部に外周縁部
との板厚差に応じた厚さのシム板２４を装入したもので
ある。図９は図８のフルビード７，８をステップ状のハ
ーフビード１３，１４に代えて、各ビード１３，１４の
凹状空間にシール材Ｓを充填した例であり、図１０は図
８の上基板２１と副板２３との間に副板２５を介在させ
てガスケットの板厚を調整するようにした例である。FIG. 8 shows the sub-plate 2 between the upper and lower substrates 21 and 22.
In this example, the upper and lower substrates 21 and 22 have the same plate thickness, and the folded portion is not provided at the end on the side of the combustion chamber hole 3 and the outer peripheral edge. The side end and the outer peripheral edge are folded upward, respectively, to
A shim plate 24 having a thickness corresponding to the difference in plate thickness from the outer peripheral edge is inserted into the inside of the folded portion at the end on the combustion chamber hole 3 side. FIG. 9 shows an example in which the full beads 7 and 8 in FIG. 8 are replaced with step-shaped half beads 13 and 14, and a sealing material S is filled in the concave space of each bead 13 and 14. FIG. In this example, the thickness of the gasket is adjusted by interposing a sub-plate 25 between the gasket and the sub-plate 23.
【００２０】図１１は上下二枚の基板３１，３２を同一
厚とし、上基板３１の燃焼室孔３側の端部と外周縁部と
をそれぞれを下方に折り返して燃焼室孔３側の端部の折
り返し部分の内部に外周縁部との板厚差に応じた厚さの
シム板２６を装入したものであり、図１２は上下二枚の
基板４１，４２を同一厚とし、上基板４１の燃焼室孔３
側の端部下面にシム板４３を溶接等により固着すると共
に、外周縁部の下面にシム板４３より薄いシム板４４を
溶接等により固着して板厚差を設けるようにしたもので
ある。FIG. 11 shows that the upper and lower substrates 31 and 32 have the same thickness, and the end of the upper substrate 31 on the side of the combustion chamber hole 3 and the outer peripheral edge thereof are folded downward to form an end on the side of the combustion chamber hole 3. A shim plate 26 having a thickness corresponding to the thickness difference between the outer peripheral edge portion and the outer peripheral edge portion is inserted inside the folded portion of the upper portion. FIG. 41 combustion chamber holes 3
A shim plate 43 is fixed to the lower surface of the side end by welding or the like, and a shim plate 44 thinner than the shim plate 43 is fixed to the lower surface of the outer peripheral edge by welding or the like to provide a difference in plate thickness.
【００２１】図１３は上下二枚の基板５１，５２を同一
厚とし、上基板５１の燃焼室孔３側の端部下面にシム板
（成形板）５３を溶接等により固着すると共に、下基板
５２の外周縁部を上方に折り返して上下方向に二枚配置
したものであり、シム板５３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５４近傍の板厚Ｔ1が
薄く成形されていると共に、締め付け力が小さい各ボル
ト孔５４間に位置する部分の板厚Ｔ0 がボルト孔５４近
傍より厚く、且つ、上基板１より厚く成形されて抑揚が
付けられており、これにより、シリンダボア周縁におけ
る面圧の均一化を図って該シリンダボアの真円度が損な
われないようにしている。FIG. 13 shows that the upper and lower substrates 51 and 52 have the same thickness, and a shim plate (formed plate) 53 is fixed to the lower surface of the end of the upper substrate 51 on the side of the combustion chamber hole 3 by welding or the like. The shim plate 53 is formed such that the plate thickness T 1 near the bolt hole 54 of the fastening bolt having a large fastening force when fastening the bolt is thinner. At the same time, the plate thickness T 0 of the portion located between the bolt holes 54 having a small tightening force is formed thicker than the vicinity of the bolt holes 54 and thicker than the upper substrate 1 so that the cylinder bore is formed. The surface pressure at the peripheral edge is made uniform so that the roundness of the cylinder bore is not impaired.
【００２２】[0022]
【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、低コストで安定したシール性
能を長期間に渡って確保す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１又は２の発明
に加えて、ビードの高さを高くしてシール材の充填量を
多くすることができるので、より大きなシール圧を確保
することができるという効果が得られる。As is clear from the above description, according to the first or second aspect of the present invention, there is obtained an effect that stable sealing performance at low cost can be secured for a long period of time. According to the third aspect of the invention, in addition to the first or second aspect of the present invention, since the height of the bead can be increased to increase the filling amount of the sealing material, a larger sealing pressure can be secured. The effect is obtained.
【００２３】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、シリンダボア周縁における面
圧の均一化を図って該シリンダボアの真円度が損なわれ
ないようにすることができるという効果が得られる。According to a fourth aspect of the present invention, in addition to any one of the first to third aspects of the present invention, the roundness of the cylinder bore is not impaired by equalizing the surface pressure at the peripheral edge of the cylinder bore. The effect that it can be obtained is obtained.
【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Ａ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA 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】本発明の他の態様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 an embodiment of another aspect of the present invention.
【図６】基板の変形例を説明するための説明的断面図で
ある。FIG. 6 is an explanatory sectional view for explaining a modification of the substrate.
【図７】基板の変形例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 a modification of the substrate.
【図８】基板の変形例を説明するための説明的断面図で
ある。FIG. 8 is an explanatory sectional view for explaining a modification of the substrate.
【図９】基板の変形例を説明するための説明的断面図で
ある。FIG. 9 is an explanatory sectional view for explaining a modification of the substrate.
【図１０】基板の変形例を説明するための説明的断面図
である。FIG. 10 is an explanatory sectional view for explaining a modification of the substrate.
【図１１】基板の変形例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 a modification of the substrate.
【図１２】基板の変形例を説明するための説明的断面図
である。FIG. 12 is an explanatory sectional view for explaining a modification of the substrate.
【図１３】基板の変形例を説明するための説明的断面図
である。FIG. 13 is an explanatory cross-sectional view for explaining a modification of the substrate.
【図１４】従来の金属ガスケットを説明するための説明
的断面図である。FIG. 14 is an explanatory sectional view for explaining a conventional metal gasket.
１…上基板 ２…下基板 ３…燃焼室孔 ４…周縁部 ５，６…フルビード（ビード部） Ｓ…弾性シール材 ５３…シム板（成形板） DESCRIPTION OF SYMBOLS 1 ... Upper board | substrate 2 ... Lower board | substrate 3 ... Combustion chamber hole 4 ... Peripheral part 5, 6 ... Full bead (bead part) S ... Elastic sealing material 53 ... Shim board (formed board)
Claims (4)
れると共に、該周縁部の周囲の表裏面にそれぞれ凹状の
ビード部が形成され、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際に
前記周縁部に最大荷重が作用するようにして前記接合面
間をシールするようにした少なくとも二枚の基板を備え
た金属ガスケットにおいて、 前記ビード部に弾性シール材を該ビード部の凹状空間を
満たすように充填したことを特徴とする金属ガスケッ
ト。1. A peripheral portion of a combustion chamber hole is made thicker than other portions, and a concave bead portion is formed on each of the front and rear surfaces around the peripheral portion, so that an intervening portion is provided between a joining surface of a cylinder block and a cylinder head. A metal gasket provided with at least two substrates so that a maximum load is applied to the peripheral portion when the components are tightened with the fastening bolts to seal between the joint surfaces. Characterized in that the metal gasket is filled so as to fill the concave space of the bead portion.
れると共に、該周縁部の周囲の表裏面にそれぞれ凹状の
ビード部が形成され、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際に
前記周縁部に最大荷重が作用するようにして前記接合面
間をシールするようにした少なくとも二枚の基板を備え
た金属ガスケットにおいて、 前記ビード部に該ビード部の凹状空間の体積に応じた量
の弾性シール材を装填したことを特徴とする金属ガスケ
ット。2. A peripheral portion of the combustion chamber hole is made thicker than other portions, and a concave bead portion is formed on each of the front and back surfaces around the peripheral portion, so that an intervening portion is provided between the joining surfaces of the cylinder block and the cylinder head. A metal gasket provided with at least two substrates so as to apply a maximum load to the peripheral portion when sealing with a fastening bolt and to seal between the joining surfaces, wherein the bead portion is A metal gasket, wherein an amount of an elastic sealing material according to the volume of the concave space is loaded.
ード部とを前記燃焼室孔の径方向に互いにずらして配置
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 the bead portion on the front side and the bead portion on the back side are arranged so as to be shifted from each other in a radial direction of the combustion chamber hole.
向に沿って変化するように板厚に抑揚を付けたことを特
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 plate thickness according to claim 1, wherein the thickness of the peripheral portion is varied along the circumferential direction of the combustion chamber hole. Metal gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36439199A JP2001173791A (en) | 1999-12-22 | 1999-12-22 | Metal gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36439199A JP2001173791A (en) | 1999-12-22 | 1999-12-22 | Metal gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001173791A true JP2001173791A (en) | 2001-06-26 |
Family
ID=18481694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36439199A Pending JP2001173791A (en) | 1999-12-22 | 1999-12-22 | Metal gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001173791A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3401484B2 (en) | 2000-07-27 | 2003-04-28 | 石川ガスケット株式会社 | Metal gasket |
| EP1350993A2 (en) | 2002-04-04 | 2003-10-08 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| JP2004204910A (en) * | 2002-12-24 | 2004-07-22 | Japan Metal Gasket Co Ltd | Sealing device |
| WO2010073796A1 (en) * | 2008-12-26 | 2010-07-01 | 日本ガスケット株式会社 | Seal structure for oil drop hole in cylinder head gasket |
-
1999
- 1999-12-22 JP JP36439199A patent/JP2001173791A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3401484B2 (en) | 2000-07-27 | 2003-04-28 | 石川ガスケット株式会社 | Metal gasket |
| US7011313B2 (en) | 2002-04-04 | 2006-03-14 | Japan Metal Gasket Co., Ltd. | Metal gasket |
| US7025358B2 (en) | 2002-04-04 | 2006-04-11 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| WO2003085293A1 (en) * | 2002-04-04 | 2003-10-16 | Japan Metal Gasket Co., Ltd. | Metal gasket |
| EP1350993A2 (en) | 2002-04-04 | 2003-10-08 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| WO2003085292A1 (en) * | 2002-04-04 | 2003-10-16 | Japan Metal Gasket Co., Ltd. | Metal gasket |
| EP1350994A3 (en) * | 2002-04-04 | 2004-01-28 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| EP1350993A3 (en) * | 2002-04-04 | 2004-01-28 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| EP1350992A3 (en) * | 2002-04-04 | 2004-01-28 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| EP1350992A2 (en) | 2002-04-04 | 2003-10-08 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| US8459657B2 (en) | 2002-04-04 | 2013-06-11 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| WO2003085294A1 (en) * | 2002-04-04 | 2003-10-16 | Japan Metal Gasket Co., Ltd. | Metal gasket |
| US7073795B2 (en) | 2002-04-04 | 2006-07-11 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| US7431306B2 (en) | 2002-04-04 | 2008-10-07 | Japan Metal Gasket Co., Ltd. | Metallic gasket |
| CN100449181C (en) * | 2002-04-04 | 2009-01-07 | 日本金属密封片株式会社 | Metal gasket |
| CN100554737C (en) * | 2002-04-04 | 2009-10-28 | 日本金属密封片株式会社 | Metal gasket |
| JP2004204910A (en) * | 2002-12-24 | 2004-07-22 | Japan Metal Gasket Co Ltd | Sealing device |
| WO2010073796A1 (en) * | 2008-12-26 | 2010-07-01 | 日本ガスケット株式会社 | Seal structure for oil drop hole in cylinder head gasket |
| JP2010156388A (en) * | 2008-12-26 | 2010-07-15 | Nippon Gasket Co Ltd | Sealing structure of oil drop hole in cylinder head gasket |
| CN102265070B (en) * | 2008-12-26 | 2016-03-09 | 日本密封垫株式会社 | The seal construction of the oil leaking hole of cylinder cover sealing gasket |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4156527B2 (en) | Metal gasket | |
| US5791659A (en) | Metal gasket | |
| EP1275889A2 (en) | Cylinder head gasket | |
| US20020117812A1 (en) | Gasket for sealing tri-face area | |
| US6318733B1 (en) | Metal laminate gasket with elastic auxiliary sealing member | |
| JP2001173791A (en) | Metal gasket | |
| JP2001082610A (en) | Metal gasket | |
| JP4011264B2 (en) | Metal gasket | |
| JPH09196179A (en) | Laminated metal gasket with recess for coating flow prevention | |
| JP2001032938A (en) | Metal gasket | |
| US20040212155A1 (en) | Cylinder head gasket with fold-over stopper | |
| JPH02118275A (en) | Metal gasket | |
| JP2004218526A (en) | Metallic gasket | |
| EP0508017A1 (en) | Metal laminate gasket with graphite sheet | |
| JP4712165B2 (en) | Metal gasket | |
| JP4008060B2 (en) | Metal gasket | |
| JP2001032941A (en) | Metal gasket | |
| KR100196987B1 (en) | Metal laminate gasket constituted of only a pair of upper and low | |
| JP2841184B2 (en) | Metal gasket | |
| JPH09303560A (en) | Metallic gasket | |
| JP3769523B2 (en) | Cylinder head gasket | |
| EP0908648A2 (en) | Metal laminate gasket with wide and narrow flange portions | |
| JPH01299366A (en) | Metallic gasket | |
| JP4249284B2 (en) | Metal gasket | |
| JP3086008B2 (en) | Metal gasket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040521 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040622 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040806 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20051115 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20060307 |