JPH0435566Y2 - - Google Patents
Info
- Publication number
- JPH0435566Y2 JPH0435566Y2 JP1988093233U JP9323388U JPH0435566Y2 JP H0435566 Y2 JPH0435566 Y2 JP H0435566Y2 JP 1988093233 U JP1988093233 U JP 1988093233U JP 9323388 U JP9323388 U JP 9323388U JP H0435566 Y2 JPH0435566 Y2 JP H0435566Y2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- combustion chamber
- grommet
- metal plate
- liquid
- 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.)
- Expired
Links
- 239000002184 metal Substances 0.000 claims description 94
- 238000002485 combustion reaction Methods 0.000 claims description 59
- 239000007788 liquid Substances 0.000 claims description 57
- 238000007789 sealing Methods 0.000 claims description 53
- 239000000463 material Substances 0.000 claims description 15
- 230000003628 erosive effect Effects 0.000 claims description 9
- 239000003779 heat-resistant material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- 238000003475 lamination Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、内燃機関において用いるシリンダヘ
ツドガスケツトに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cylinder head gasket used in an internal combustion engine.
［従来の技術］
内燃機関のシリンダブロツクとシリンダヘツド
との間に装着される金属積層形のシリンダヘツド
ガスケツトにおいては、所要数の金属板を積層
し、それらの金属板の燃焼室穴及び液体穴の内周
において、金属板の端部をグロメツトまたは金属
板の折返し部により包み込んで組立てられてい
る。[Prior Art] In a metal laminated type cylinder head gasket installed between a cylinder block and a cylinder head of an internal combustion engine, a required number of metal plates are laminated, and combustion chamber holes and liquid in the metal plates are laminated. The end of the metal plate is wrapped around the inner periphery of the hole by a grommet or a folded part of the metal plate.
このようなシリンダヘツドガスケツトにおい
て、燃焼室穴の周辺は燃焼室における燃料の爆発
的燃焼により高温に加熱されると同時に、高圧力
が繰返して作用するため、非常に過酷な条件の下
に置かれることになり、そのため、グロメツトや
折返し部を設けた金属板自体の厚さや材質を、そ
れらに耐えるものにする必要がある。 In such a cylinder head gasket, the area around the combustion chamber hole is heated to a high temperature due to explosive combustion of fuel in the combustion chamber, and at the same time, high pressure is applied repeatedly, so the area is placed under extremely harsh conditions. Therefore, the thickness and material of the metal plate itself on which the grommet and folded portion are provided must be made to withstand such damage.
これに対し、上記液体穴の周辺は、上記燃焼室
穴周辺の場合に比して、特に過酷な条件に置かれ
ることはないが、長期にわたつて液体により浸食
されることなく、またその漏洩を防止するのに適
した材料であることが要求される。 On the other hand, the area around the liquid hole is not exposed to particularly harsh conditions compared to the area around the combustion chamber hole, but it is not eroded by the liquid over a long period of time, and the area does not leak. The material is required to be suitable for preventing.
一方、例えば、特開昭61−160549号公報に開示
されているように、シリンダヘツドガスケツトで
は、通常、燃焼室穴の周辺の穴シール部に大きな
気密性が要求され、液体穴の周縁の穴シール部に
はそれに次いで液密性が要求される。そのため、
燃焼室穴の周辺の穴シール部における金属板の積
層厚さt1（各金属板の厚さ合計）と、液体穴の周
縁の穴シール部における金属板の積層厚さt2と、
それらの穴の間の平面部における金属板の積層厚
さt3との間に、t1＞t2＞t3の関係を持たせること
が要求される。 On the other hand, as disclosed in JP-A No. 61-160549, for example, in a cylinder head gasket, the hole sealing area around the combustion chamber hole is usually required to be highly airtight, and the periphery of the liquid hole is usually required to be highly airtight. Next, the hole seal portion is required to be liquid-tight. Therefore,
The laminated thickness t 1 of the metal plates at the hole sealing part around the combustion chamber hole (total thickness of each metal plate), the laminated thickness t 2 of the metal plates at the hole sealing part around the liquid hole,
It is required to have a relationship of t 1 > t 2 > t 3 with the laminated thickness t 3 of the metal plates at the plane portion between those holes.
［考案が解決しようとする課題］
本考案の技術的課題は、簡単な手段によつて上
記諸要求を一挙に満たしたシリンダヘツドガスケ
ツトを得ること、即ち、燃焼室穴及び液体穴の周
辺のグロメツトまたは金属板の折返し部をそれら
の穴に適した素材で形成すると同時に、各穴を気
密、液密性の高い状態でシール可能にすることに
ある。[Problem to be solved by the invention] The technical problem of the invention is to obtain a cylinder head gasket that satisfies the above requirements all at once by simple means. To form a grommet or a folded part of a metal plate from a material suitable for the holes, and at the same time to seal each hole in a highly airtight and liquid-tight state.
［課題を解決するための手段］
上記課題を解決するため、本考案に係る第１の
ガスケツトは、金属板からなる上下の外板及び中
板を積層し、これらの積層金属板に燃焼室穴及び
液体穴を設け、燃焼室穴又は液体穴のうち一方の
穴の内周に、一方の外板の端部を他方の外板上に
折返して積層金属板の端部を包み込むことによ
り、外板の折返し部からなる穴シール部を形成
し、他方の穴の内周には、積層金属板の端部を包
み込むグロメツトからなる穴シール部を形成し、
燃焼室穴側の穴シール部においては、折返し部を
備えた外板又はグロメツトを耐熱性材料により形
成し、液体穴側の穴シール部においては、グロメ
ツト又は折返し部を備えた外板を耐侵食性材料に
より形成し、燃焼室穴側の穴シール部における折
返部を備えた外板又はグロメツトの厚さを、液体
穴側の穴シール部におけるグロメツト又は折返し
部を備えた外板の厚さより十分に厚くすることに
より、燃焼室穴の周辺の穴シール部における積層
金属板の厚さ合計t1及び液体穴の周辺の穴シール
部における積層金属板の厚さ合計t2、並びにそれ
らの穴の間の平面部における積層金属板の厚さ合
計t3に、t1＞t2＞t3の関係を持たせた、ことを特
徴とするものである。[Means for Solving the Problems] In order to solve the above problems, the first gasket according to the present invention has upper and lower outer and middle plates made of metal plates laminated, and combustion chamber holes are formed in these laminated metal plates. By folding the end of one outer panel onto the other outer panel and wrapping the end of the laminated metal plate around the inner periphery of one of the combustion chamber hole or the liquid hole, A hole sealing portion is formed by a folded portion of the plate, and a hole sealing portion is formed by a grommet that wraps around the end of the laminated metal plate on the inner periphery of the other hole.
In the hole sealing part on the combustion chamber hole side, an outer plate or grommet with a folded part is formed of a heat-resistant material, and in the hole sealing part on the liquid hole side, the outer plate with a grommet or folded part is made of an erosion-resistant material. The thickness of the outer plate or grommet with the folded part at the hole sealing part on the combustion chamber hole side is made of a flexible material that is sufficiently thicker than the thickness of the outer plate with the grommet or folded part at the hole sealing part on the liquid hole side. By increasing the thickness to It is characterized in that the total thickness t 3 of the laminated metal plates in the plane portion between them has a relationship of t 1 > t 2 > t 3 .
また、第２のガスケツトは、金属板からなる上
下の外板及び複数の中板を積層し、これらの積層
金属板に燃焼室穴及び液体穴を設け、燃焼室穴の
内周及び液体穴の内周にそれぞれ、積層金属板の
端部を包み込む耐熱性及び耐侵食性のグロメツト
からなる穴シール部を形成し、燃焼室穴側のグロ
メツトの厚さを液体穴側のグロメツトの厚さより
厚くすることにより、燃焼室穴の周辺の穴シール
部における積層金属板の厚さ合計t1及び液体穴の
周辺の穴シール部における積層金属板の厚さ合計
t2、並びにそれらの穴の間の平面部における積層
金属板の厚さ合計t3に、t1＞t2＞t3の関係を持た
せた、ことを特徴とするものである。 The second gasket is made by laminating upper and lower outer plates and a plurality of middle plates made of metal plates, providing a combustion chamber hole and a liquid hole in these laminated metal plates, and forming an inner periphery of the combustion chamber hole and a liquid hole. A hole sealing portion consisting of a heat-resistant and erosion-resistant grommet that wraps around the end of the laminated metal plate is formed on each inner circumference, and the thickness of the grommet on the combustion chamber hole side is made thicker than the thickness of the grommet on the liquid hole side. Therefore, the total thickness of the laminated metal plates in the hole sealing part around the combustion chamber hole t 1 and the total thickness of the laminated metal plate in the hole sealing part around the liquid hole
It is characterized in that t 2 and the total thickness t 3 of the laminated metal plate in the plane portion between the holes have a relationship of t 1 > t 2 > t 3 .
また、第３のガスケツトは、一枚の金属板から
なり、該金属板に燃焼室穴及び液体穴を設け、燃
焼室穴の内周及び液体穴の内周にそれぞれ、金属
板の端部を包み込む耐熱性及び耐侵食性のグロメ
ツトからなる穴シール部を形成し、燃焼室穴側の
グロメツトの厚さを液体穴側のグロメツトの厚さ
より厚くすることにより、燃焼室穴の周辺の穴シ
ール部における積層金属板の厚さ合計t1及び液体
穴の周辺の穴シール部における積層金属板の厚さ
合計t2、並びにそれらの穴の間の平面部における
積層金属板の厚さ合計t3に、t1＞t2＞t3の関係を
持たせた、ことを特徴とするものである。 The third gasket is made of a single metal plate, and the metal plate is provided with a combustion chamber hole and a liquid hole, and the ends of the metal plate are formed on the inner periphery of the combustion chamber hole and the liquid hole, respectively. By forming a hole sealing part consisting of a heat-resistant and erosion-resistant grommet that encloses the hole, and making the thickness of the grommet on the combustion chamber hole side thicker than the thickness of the grommet on the liquid hole side, the hole sealing part around the combustion chamber hole is formed. The total thickness of the laminated metal plate at t1 , the total thickness of the laminated metal plate at the hole sealing part around the liquid hole, t2 , and the total thickness of the laminated metal plate at the flat area between those holes, t3 . , t 1 > t 2 > t 3 .
また、第４のガスケツトは、金属板からなる上
下の外板及び複数の中板を積層し、これらの積層
金属板に燃焼室穴及び液体穴を設け、燃焼室穴又
は液体穴のうち一方の穴の内周に、一方の外板の
端部を他方の外板上に折返して積層金属板の端部
を包み込むことにより、外板の折返し部からなる
穴シール部を形成し、他方の穴の内周には、積層
金属板の端部を包み込むグロメツトからなる穴シ
ール部を形成し、燃焼室穴側の穴シール部におい
ては、折返し部を備えた外板又はグロメツトを耐
熱性材料により形成すると共に、穴シール部内周
にシール効果向上のためのワイヤを挟み込み、液
体穴側の穴シール部においては、グロメツト又は
折返し部を備えた外板を耐侵食性材料により形成
し、燃焼室穴側の穴シール部における折返部を備
えた外板又はグロメツトの厚さを、液体穴側の穴
シール部におけるグロメツト又は折返し部を備え
た外板の厚さより十分に厚くすることにより、燃
焼室穴の周辺の穴シール部における積層金属板の
厚さ合計t1及び液体穴の周辺の穴シール部におけ
る積層金属板の厚さ合計t2、並びにそれらの穴の
間の平面部における積層金属板の厚さ合計t3に、
t1＞t2＞t3の関係を持たせた、ことを特徴とする
ものである。 The fourth gasket is made by laminating upper and lower outer plates and a plurality of middle plates made of metal plates, and providing a combustion chamber hole and a liquid hole in these laminated metal plates. By folding the end of one outer plate over the other outer plate and wrapping the end of the laminated metal plate around the inner periphery of the hole, a hole sealing part consisting of the folded part of the outer plate is formed, and the other hole is closed. A hole sealing part consisting of a grommet that wraps around the end of the laminated metal plate is formed on the inner periphery of the combustion chamber, and an outer plate or grommet with a folded part is formed of a heat-resistant material in the hole sealing part on the combustion chamber hole side. At the same time, a wire is sandwiched around the inner periphery of the hole seal part to improve the sealing effect, and the outer plate with a grommet or folded part is formed of an erosion-resistant material in the hole seal part on the liquid hole side, and the outer plate is made of an anti-erosion material. By making the thickness of the outer plate or grommet with the folded part in the hole sealing part of the hole sufficiently thicker than the thickness of the outer plate with the grommet or folded part in the hole sealing part on the liquid hole side, The total thickness of the laminated metal plate in the hole sealing area around the liquid hole, t 1 , the total thickness t 2 of the laminated metal plate in the hole sealing area around the liquid hole, and the thickness of the laminated metal plate in the flat area between those holes. total t 3 ,
It is characterized by having the relationship t 1 > t 2 > t 3 .
［作用］
燃焼室穴及び液体穴の周辺の穴シール部を形成
するグロメツトまたは金属板の折返し部は、それ
ぞれの穴に適した材料及び厚さが選択されるの
で、それぞれがすぐれた耐久性を示し、またそれ
らのグロメツトまたは金属板の折返し部によつて
形成される穴シール部の厚さt1，t2、及び平面部
の厚さt3に、t1＞t2＞t3の関係を持たせているの
で、各穴シール部の気密、液密が良好に保たれ、
しかもその構成が非常に簡単である。[Function] The material and thickness of the grommet or folded part of the metal plate that forms the hole seal around the combustion chamber hole and the liquid hole are selected to be suitable for each hole, so each has excellent durability. In addition, the relationship t 1 > t 2 > t 3 exists between the thicknesses t 1 and t 2 of the hole sealing portion formed by the folded portion of the grommet or the metal plate, and the thickness t 3 of the flat portion. This ensures that each hole seal is airtight and liquid-tight.
Moreover, its configuration is extremely simple.
［実施例］
第１図及び第２図は、本考案の第１実施例を示
している。[Embodiment] FIGS. 1 and 2 show a first embodiment of the present invention.
この内燃機関用金属積層形シリンダヘツドガス
ケツトは、金属板からなる上下の外板１，２と、
それらの間に挟まれた複数の中板３ａ，３ｂとを
備えている。このガスケツトを構成する積層金属
板（外板１，２及び中板３ａ，３ｂ）は、燃焼室
穴４と、冷却水等を通す液体穴５と、シリンダブ
ロツクとシリンダヘツドとを締付けるためのボル
トを挿通するボルト穴６とを、それぞれ必要な位
置に備えたものである。 This metal laminated cylinder head gasket for internal combustion engines has upper and lower outer plates 1 and 2 made of metal plates,
It includes a plurality of intermediate plates 3a and 3b sandwiched between them. The laminated metal plates (outer plates 1, 2 and middle plates 3a, 3b) that make up this gasket have combustion chamber holes 4, liquid holes 5 for passing cooling water, etc., and bolts for tightening the cylinder block and cylinder head. Bolt holes 6 for insertion are provided at required positions.
上記燃焼室穴４及び液体穴５の内周には、後述
する各実施例を対比すれば明らかなように、金属
板の端部を包み込むグロメツトまたは金属板の折
返し部を設けるが、この第１実施例では、燃焼室
穴４の内周において下方の外板２の折返し部７を
上方の外板１上に折返すことにより金属板の端部
を包み込み、また液体穴５の内周においては積層
した金属板の端部をＵ字状に折曲したグロメツト
（金属環）８で包み込み、これによつてそれらの
穴４，５の周辺に穴シール部を形成している。 On the inner periphery of the combustion chamber hole 4 and the liquid hole 5, a grommet or a folded part of the metal plate that wraps around the end of the metal plate is provided, as will be clear from a comparison of the embodiments described later. In the embodiment, the folded part 7 of the lower outer plate 2 is folded back onto the upper outer plate 1 at the inner periphery of the combustion chamber hole 4 to wrap around the end of the metal plate, and at the inner periphery of the liquid hole 5. The ends of the laminated metal plates are wrapped in a grommet (metal ring) 8 bent into a U-shape, thereby forming hole seals around the holes 4 and 5.
この場合に、折返し部７を有する外板２は、そ
の一部が燃焼室に臨むことにより過酷な条件下に
置かれるので、その条件に耐える材料（例えばス
テンレス鋼等の耐熱性ある材料）により、必要な
厚さに形成し、また液体穴５の内周において金属
板の端部を包み込むグロメツト８はその液体穴を
流れる流体により浸食されないような材料で、必
要な厚さに形成される。なお、ここでは折返し部
７を設けた外板２の厚さをグロメツト８の厚さよ
りも十分に厚くした場合を示している。その結果
として、金属板の折返し部７によつて形成される
燃焼室穴４の周辺の穴シール部における金属板積
層厚さ合計t1及び液体穴５の周辺の穴シール部に
おける積層金属板の厚さ合計t2、並びにそれらの
穴の間の平面部における積層金属板の厚さ合計t3
が、t1＞t2＞t3の関係を持つように形成される。
このような各部厚さの相対的関係は、シリンダヘ
ツドガスケツトを締付けた時、各穴に応じたシー
ル面圧の配分がなされ、各穴のシール性の向上に
極めて有効なものである。 In this case, the outer panel 2 having the folded portion 7 is exposed to harsh conditions as part of it faces the combustion chamber, so it is made of a material that can withstand such conditions (for example, a heat-resistant material such as stainless steel). The grommet 8, which wraps around the end of the metal plate at the inner periphery of the liquid hole 5, is made of a material that will not be eroded by the fluid flowing through the liquid hole, and is formed to the necessary thickness. Here, a case is shown in which the thickness of the outer plate 2 provided with the folded portion 7 is made sufficiently thicker than the thickness of the grommet 8. As a result, the total thickness t 1 of the laminated metal plates in the hole sealing area around the combustion chamber hole 4 formed by the folded part 7 of the metal plate and the thickness of the laminated metal plate in the hole sealing area around the liquid hole 5 are determined. The total thickness t 2 and the total thickness t 3 of the laminated metal plate in the plane between the holes.
is formed to have the relationship t 1 > t 2 > t 3 .
This relative relationship between the thicknesses of each part distributes the sealing surface pressure according to each hole when the cylinder head gasket is tightened, and is extremely effective in improving the sealing performance of each hole.
第３図に示す第２実施例は、燃焼室穴４及び液
体穴５の両者の内周にグロメツト３７，３８を設
けているが、両グロメツト３７，３８の厚さを異
ならしめ、上下の外板３１，３２と、それらの間
に挟まれた複数の中板３３，３３，の厚さをほぼ
均等にしている。また、第４図に示す第３実施例
は、同様に燃焼室穴４と液体穴５にそれぞれ厚さ
を異ならしめたグロメツト４７，４８を用いてい
るが、この場合には１枚の外板４１のみを用いて
いる。 In the second embodiment shown in FIG. 3, grommets 37 and 38 are provided on the inner periphery of both the combustion chamber hole 4 and the liquid hole 5, but the thicknesses of both grommets 37 and 38 are made different, and the upper and lower outer peripheries are made different. The thicknesses of the plates 31, 32 and the plurality of middle plates 33, 33 sandwiched between them are made approximately equal. Further, in the third embodiment shown in FIG. 4, grommets 47 and 48 of different thickness are used for the combustion chamber hole 4 and the liquid hole 5, respectively, but in this case, one outer plate is used. Only 41 is used.
第５図に示す第４実施例は、前記第１実施例と
同様に、上下の外板５１，５２と、それらの間に
挟まれた複数の中板５３，５３とを備えたガスケ
ツトにおいて、燃焼室穴４の内周では下方の外板
５２の折返し部５７を上方の外板５１上に折返
し、液体穴５の内周においては積層した金属板の
端部をグロメツト５８で包み込んでいるが、燃焼
室穴４の内周における折返し部５７内にシール効
果を高めるためのワイヤ５９を挟み込んでいる。
なお、その他の構成は第１実施例と同様である。 The fourth embodiment shown in FIG. 5, like the first embodiment, is a gasket comprising upper and lower outer plates 51, 52 and a plurality of middle plates 53, 53 sandwiched between them. At the inner periphery of the combustion chamber hole 4, the folded part 57 of the lower outer plate 52 is folded back onto the upper outer plate 51, and at the inner periphery of the liquid hole 5, the end of the laminated metal plate is wrapped with a grommet 58. A wire 59 is sandwiched within a folded portion 57 on the inner periphery of the combustion chamber hole 4 to enhance the sealing effect.
Note that the other configurations are the same as in the first embodiment.
上述した各実施例のガスケツトにおいて、穴シ
ール部の見掛け上の厚さを保つてシール効果を高
めるためには、図示したように、穴シール部にお
いて外板や中板にビード部を設けることができ
る。 In the gaskets of the respective embodiments described above, in order to maintain the apparent thickness of the hole seal portion and enhance the sealing effect, it is possible to provide a bead portion on the outer plate or the middle plate at the hole seal portion, as shown in the figure. can.
上記構成を有するガスケツトにおいては、燃焼
室穴及び液体穴の周辺の穴シール部を形成するグ
ロメツトまたは金属板の折返し部は、それぞれの
穴に適した材料及び厚さが選択されるので、それ
ぞれが各穴においてそれぞれすぐれた耐久性を示
し、またそれらのグロメツトまたは金属板の折返
し部によつて形成される穴シール部の厚さt1，
t2、及び平面部の厚さt3に、t1＞t2＞t3の関係を持
たせているので、各穴シール部の気密、液密が良
好に保たれ、しかも金属板やグロメツトの厚さの
調整により上記t1，t2，t3の大小関係を容易に設
定できるので、その構成が非常に簡単である。 In the gasket having the above configuration, the material and thickness of the grommet or folded part of the metal plate that forms the hole seal around the combustion chamber hole and the liquid hole are selected to be suitable for each hole. Each hole exhibits excellent durability, and the thickness of the hole seal portion formed by the grommet or folded portion of the metal plate t 1 ,
Since t 2 and the thickness t 3 of the flat part have the relationship t 1 > t 2 > t 3 , the air-tightness and liquid-tightness of each hole sealing part are maintained well, and the metal plate and grommet Since the magnitude relationship of t 1 , t 2 , and t 3 can be easily set by adjusting the thickness of , the structure is very simple.
なお、前記第１実施例や第４実施例では、燃焼
室穴の内周において各金属板を外板の折返し部に
より包み込み、液体穴の内周においてはグロメツ
トで各金属板を包み込むようにしているが、これ
とは逆に、液体穴の周辺に外板の折返し部を設け
て金属板を包み込み、燃焼室穴の内周にグロメツ
トを設けて金属板を包み込むように構成し得るこ
とは勿論である。 In the first and fourth embodiments, each metal plate is wrapped around the inner periphery of the combustion chamber hole by the folded part of the outer plate, and each metal plate is wrapped around the inner periphery of the liquid hole with a grommet. However, on the contrary, it is of course possible to construct a structure in which a folded part of the outer plate is provided around the liquid hole to wrap around the metal plate, and a grommet is provided on the inner periphery of the combustion chamber hole to wrap around the metal plate. It is.
［考案の効果］
以上に詳述したように本考案によれば、燃焼室
穴の内周におけるグロメツトまたは金属板の折返
し部を耐熱性材料により形成すると共に、液体穴
の内周におけるグロメツトまたは金属板の折返し
部を流体に対して耐侵食性を持つ材料により形成
したうえで、そのグロメツトまたは金属板の折返
し部によつて形成される燃焼室穴の周辺の穴シー
ル部における積層金属板の厚さ合計t1及び液体穴
の周辺の穴シール部における積層金属板の厚さ合
計t2、並びにそれらの穴の間の平面部における積
層金属板の厚さ合計t3に、t1＞t2＞t3の関係を持
たせたので、単に各穴シール部と平面部における
積層金属板の厚さ合計を上記関係に設定しただけ
のものに比べ、燃焼室穴及び液体穴の周辺のグロ
メツトまたは金属板の折返し部により高度の耐久
性を持たせ得ると同時に、各穴のシール性能を著
しく高めることができる。[Effects of the invention] As detailed above, according to the invention, the grommet or folded part of the metal plate on the inner periphery of the combustion chamber hole is formed of a heat-resistant material, and the grommet or metal plate on the inner periphery of the liquid hole is formed of a heat-resistant material. The thickness of the laminated metal plate at the hole sealing part around the combustion chamber hole formed by the folded part of the plate is made of a material that is resistant to erosion by fluids, and the grommet or the folded part of the metal plate is formed by the folded part of the metal plate. t 1 , the total thickness t 2 of the laminated metal plate in the hole sealing area around the liquid hole, and the total thickness t 3 of the laminated metal plate in the flat area between those holes, t 1 > t 2 > t 3 , compared to a case where the total thickness of the laminated metal plate at each hole sealing part and the flat part is simply set to the above relationship, the grommet or the thickness around the combustion chamber hole and liquid hole is A high degree of durability can be provided by the folded portion of the metal plate, and at the same time, the sealing performance of each hole can be significantly improved.
第１図は本考案に係るシリンダヘツドガスケツ
トの第１実施例を示す第２図のＡ−Ａ位置での断
面図、第２図は同ガスケツトの平面図、第３図な
いし第５図はそれぞれ異なる実施例の要部断面図
である。
１，２，３１，３２，４１，５１，５２……外
板、３，３３，５３……中板、４……燃焼室穴、
５……液体穴、７，５７……折返し部、８，３
７，３８，４７，４８，５８……グロメツト。
Fig. 1 is a sectional view taken along line A-A in Fig. 2 showing a first embodiment of the cylinder head gasket according to the present invention, Fig. 2 is a plan view of the same gasket, and Figs. 3 to 5 are FIG. 3 is a cross-sectional view of a main part of different embodiments. 1, 2, 31, 32, 41, 51, 52... Outer plate, 3, 33, 53... Middle plate, 4... Combustion chamber hole,
5...Liquid hole, 7,57...Folded part, 8,3
7, 38, 47, 48, 58... grommet.
Claims (1)
し、これらの積層金属板に燃焼室穴及び液体穴
を設け、 燃焼室穴又は液体穴のうち一方の穴の内周
に、一方の外板の端部を他方の外板上に折返し
て積層金属板の端部を包み込むことにより、外
板の折返し部からなる穴シール部を形成し、他
方の穴の内周には、積層金属板の端部を包み込
むグロメツトからなる穴シール部を形成し、 燃焼室穴側の穴シール部においては、折返し
部を備えた外板又はグロメツトを耐熱性材料に
より形成し、液体穴側の穴シール部において
は、グロメツト又は折返し部を備えた外板を耐
侵食性材料により形成し、 燃焼室穴側の穴シール部における折返部を備
えた外板又はグロメツトの厚さを、液体穴側の
穴シール部におけるグロメツト又は折返し部を
備えた外板の厚さより十分に厚くすることによ
り、燃焼室穴の周辺の穴シール部における積層
金属板の厚さ合計t1及び液体穴の周辺の穴シー
ル部における積層金属板の厚さ合計t2、並びに
それらの穴の間の平面部における積層金属板の
厚さ合計t3に、t1＞t2＞t3の関係を持たせた、 ことを特徴とするシリンダヘツドガスケツト。 ２ 金属板からなる上下の外板及び複数の中板を
積層し、これらの積層金属板に燃焼室穴及び液
体穴を設け、 燃焼室穴の内周及び液体穴の内周にそれぞ
れ、積層金属板の端部を包み込む耐熱性及び耐
侵食性のグロメツトからなる穴シール部を形成
し、 燃焼室穴側のグロメツトの厚さを液体穴側の
グロメツトの厚さより厚くすることにより、燃
焼室穴の周辺の穴シール部における積層金属板
の厚さ合計t1及び液体穴の周辺の穴シール部に
おける積層金属板の厚さ合計t2、並びにそれら
の穴の間の平面部における積層金属板の厚さ合
計t3に、t1＞t2＞t3の関係を持たせた、 ことを特徴とするシリンダヘツドガスケツト。 ３ 一枚の金属板からなり、該金属板に燃焼室穴
及び液体穴を設け、 燃焼室穴の内周及び液体穴の内周にそれぞ
れ、金属板の端部を包み込む耐熱性及び耐侵食
性のグロメツトからなる穴シール部を形成し、 燃焼室穴側のグロメツトの厚さを液体穴側の
グロメツトの厚さより厚くすることにより、燃
焼室穴の周辺の穴シール部における積層金属板
の厚さ合計t1及び液体穴の周辺の穴シール部に
おける積層金属板の厚さ合計t2、並びにそれら
の穴の間の平面部における積層金属板の厚さ合
計t3に、t1＞t2＞t3の関係を持たせた、 ことを特徴とするシリンダヘツドガスケツト。 ４ 金属板からなる上下の外板及び複数の中板を
積層し、これらの積層金属板に燃焼室穴及び液
体穴を設け、 燃焼室穴又は液体穴のうち一方の穴の内周
に、一方の外板の端部を他方の外板上に折返し
て積層金属板の端部を包み込むことにより、外
板の折返し部からなる穴シール部を形成し、他
方の穴の内周には、積層金属板の端部を包み込
むグロメツトからなる穴シール部を形成し、 燃焼室穴側の穴シール部においては、折返し
部を備えた外板又はグロメツトを耐熱性材料に
より形成すると共に、穴シール部内周にシール
効果向上のためのワイヤを挟み込み、液体穴側
の穴シール部においては、グロメツト又は折返
し部を備えた外板を耐侵食性材料により形成
し、 燃焼室穴側の穴シール部における折返部を備
えた外板又はグロメツトの厚さを、液体穴側の
穴シール部におけるグロメツト又は折返し部を
備えた外板の厚さより十分に厚くすることによ
り、燃焼室穴の周辺の穴シール部における積層
金属板の厚さ合計t1及び液体穴の周辺の穴シー
ル部における積層金属板の厚さ合計t2、並びに
それらの穴の間の平面部における積層金属板の
厚さ合計t3に、t1＞t2＞t3の関係を持たせた、 ことを特徴とするシリンダヘツドガスケツト。[Scope of claim for utility model registration] 1. Upper and lower outer and inner plates made of metal plates are laminated, a combustion chamber hole and a liquid hole are provided in these laminated metal plates, and one of the combustion chamber hole and the liquid hole is provided. By folding the end of one outer plate over the other outer plate and wrapping the end of the laminated metal plate, a hole sealing part consisting of the folded part of the outer plate is formed on the inner periphery of the other hole. A hole seal part consisting of a grommet that wraps around the end of the laminated metal plate is formed on the inner periphery, and an outer plate or grommet with a folded part is formed from a heat-resistant material in the hole seal part on the combustion chamber hole side. In the hole sealing part on the liquid hole side, the outer plate with a grommet or folded part is formed of an erosion-resistant material, and the thickness of the outer plate or grommet with the folded part in the hole sealing part on the combustion chamber hole side is By making t sufficiently thicker than the thickness of the outer plate with the grommet or folded part at the hole sealing part on the liquid hole side, the total thickness t 1 of the laminated metal plate at the hole sealing part around the combustion chamber hole and the liquid The relationship of t 1 > t 2 > t 3 is given to the total thickness t 2 of the laminated metal plates in the hole sealing part around the holes and the total thickness t 3 of the laminated metal plates in the flat area between the holes. A cylinder head gasket characterized by having. 2 Laminated upper and lower outer plates and a plurality of middle plates made of metal plates, combustion chamber holes and liquid holes are provided in these laminated metal plates, and laminated metal holes are provided on the inner periphery of the combustion chamber hole and the inner periphery of the liquid hole, respectively. A hole seal part is formed of a heat-resistant and erosion-resistant grommet that wraps around the edge of the plate, and the thickness of the grommet on the combustion chamber hole side is made thicker than the thickness of the grommet on the liquid hole side. The total thickness of the laminated metal plate in the hole sealing area around the liquid hole, t 1 , the total thickness t 2 of the laminated metal plate in the hole sealing area around the liquid hole, and the thickness of the laminated metal plate in the flat area between those holes. A cylinder head gasket characterized in that a total of t 3 has a relationship of t 1 > t 2 > t 3 . 3 Consisting of a single metal plate, the metal plate is provided with a combustion chamber hole and a liquid hole, and the inner periphery of the combustion chamber hole and the inner periphery of the liquid hole have heat resistance and corrosion resistance that wrap the ends of the metal plate, respectively. The thickness of the laminated metal plate in the hole sealing part around the combustion chamber hole is reduced by forming a hole sealing part consisting of grommets, and making the thickness of the grommet on the combustion chamber hole side thicker than the thickness of the grommet on the liquid hole side. The total thickness t 1 , the total thickness t 2 of the laminated metal plate in the hole sealing part around the liquid hole, and the total thickness t 3 of the laminated metal plate in the flat area between those holes, t 1 > t 2 > A cylinder head gasket characterized by having a relationship of t3 . 4 Upper and lower outer plates and a plurality of middle plates made of metal plates are stacked, a combustion chamber hole and a liquid hole are provided in these laminated metal plates, and one hole is placed on the inner periphery of one of the combustion chamber hole or the liquid hole. By folding the end of the outer panel over the other outer panel and wrapping the end of the laminated metal plate, a hole sealing section consisting of the folded part of the outer panel is formed, and the inner periphery of the other hole is covered with the laminated metal plate. A hole seal part is formed of a grommet that wraps around the end of the metal plate, and in the hole seal part on the combustion chamber hole side, an outer plate or grommet with a folded part is formed of a heat-resistant material, and the inner periphery of the hole seal part is made of a heat-resistant material. A wire is sandwiched between the holes to improve the sealing effect, and the outer plate with a grommet or a folded part is formed of an erosion-resistant material in the hole sealing part on the liquid hole side, and the folded part in the hole sealing part on the combustion chamber hole side is made of an erosion-resistant material. By making the thickness of the outer plate or grommet with the grommets sufficiently thicker than the thickness of the outer plate with the grommet or folded part in the hole sealing part on the liquid hole side, the lamination in the hole sealing part around the combustion chamber hole can be improved. The total thickness of the metal plate t 1 , the total thickness of the laminated metal plate at the hole sealing part around the liquid hole t 2 , and the total thickness of the laminated metal plate at the flat area between those holes t 3 , t A cylinder head gasket characterized by having a relationship of 1 > t 2 > t 3 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988093233U JPH0435566Y2 (en) | 1988-07-14 | 1988-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988093233U JPH0435566Y2 (en) | 1988-07-14 | 1988-07-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0214444U JPH0214444U (en) | 1990-01-30 |
| JPH0435566Y2 true JPH0435566Y2 (en) | 1992-08-24 |
Family
ID=31317680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988093233U Expired JPH0435566Y2 (en) | 1988-07-14 | 1988-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435566Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160549A (en) * | 1985-01-10 | 1986-07-21 | Nippon Raintsu Kk | Metal gasket |
| JPS6135266B2 (en) * | 1978-02-03 | 1986-08-12 | Hitachi Ltd | |
| JPS6148948B2 (en) * | 1976-09-13 | 1986-10-27 | Matsushita Electric Ind Co Ltd |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6135266U (en) * | 1984-08-07 | 1986-03-04 | 石川ガスケツト株式会社 | Metal laminated gasket |
| JPH0216049Y2 (en) * | 1984-08-29 | 1990-05-01 |
-
1988
- 1988-07-14 JP JP1988093233U patent/JPH0435566Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6148948B2 (en) * | 1976-09-13 | 1986-10-27 | Matsushita Electric Ind Co Ltd | |
| JPS6135266B2 (en) * | 1978-02-03 | 1986-08-12 | Hitachi Ltd | |
| JPS61160549A (en) * | 1985-01-10 | 1986-07-21 | Nippon Raintsu Kk | Metal gasket |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0214444U (en) | 1990-01-30 |
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