JPH026375B2 - - Google Patents
Info
- Publication number
- JPH026375B2 JPH026375B2 JP3050582A JP3050582A JPH026375B2 JP H026375 B2 JPH026375 B2 JP H026375B2 JP 3050582 A JP3050582 A JP 3050582A JP 3050582 A JP3050582 A JP 3050582A JP H026375 B2 JPH026375 B2 JP H026375B2
- Authority
- JP
- Japan
- Prior art keywords
- bead
- joint
- beads
- metal gasket
- 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.)
- Expired
Links
- 239000011324 bead Substances 0.000 claims description 53
- 239000002184 metal Substances 0.000 claims description 21
- 238000013459 approach Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 description 10
- 238000007789 sealing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0818—Flat gaskets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0818—Flat gaskets
- F16J2015/085—Flat gaskets without fold over
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Description
【発明の詳細な説明】
この発明は、内燃機関用金属ガスケツトの改良
に係り、特にビードの接合点に接近するにしたが
つて漸次ビード幅を狭小させて接合部に絞り部を
形成することにより接合部におけるシール性を改
善した金属ガスケツトに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a metal gasket for an internal combustion engine, and in particular, by gradually narrowing the bead width as it approaches the bead junction to form a constricted part at the joint. This invention relates to a metal gasket with improved sealing properties at joints.
弾性を有する金属板に凸条からなるビードを形
成し、このビードによつて内燃機関の、例えばシ
リンダヘツドとシリンダブロツクの接合面を効率
よくシールする金属ガスケツトは、この出願の発
明者によつて既に完成され、出願がなされてい
る。この金属ガスケツトは、シリンダヘツドとシ
リンダブロツクのボルト締結力により、デツキ面
たる接合面にシール線を形成して密着し抜群のシ
ール効果をあげることも既に公にされている。し
かしこのような金属ガスケツトは、複数のビード
が交叉し、あるいは集合してなる接合部に至るま
で、各ビードの幅が一定に形成されているので、
接合部、特に挾角部に各ビードの弾性変形が重合
し、このためシール線を横切るしわ等の複雑変形
を生じ、接合点付近でシール線が切れてしまうこ
とがある。このシール線の切断により、接合部に
リークを生じ、シール不良となる不都合がある。 The inventor of this application has proposed a metal gasket in which a bead consisting of a convex strip is formed on an elastic metal plate, and the bead effectively seals the joint surface of, for example, a cylinder head and a cylinder block of an internal combustion engine. It has already been completed and an application has been filed. It has already been disclosed that this metal gasket forms a seal line on the joint surface, which is the deck surface, and adheres tightly to the cylinder head and cylinder block due to the bolt tightening force, resulting in an outstanding sealing effect. However, in such metal gaskets, the width of each bead is constant up to the joint where multiple beads intersect or gather together.
The elastic deformation of each bead overlaps at the joint, especially at the corner, resulting in complex deformations such as wrinkles across the seal line, and the seal line may break near the joint. This cutting of the seal line causes leakage at the joint, which inconveniently results in poor sealing.
そこでこの発明の目的は、弾性金属板に複数の
ビードを形成してシールを果すとともにこれら複
数のビードを接合して接合部を形成した金属ガス
ケツトにおいて、前記複数のビードが接合してな
る前記接合部にこの接合部の接合点に接近するに
したがつて漸次ビード幅を挟小させて絞り部を設
けたことにより、接合部における冷熱時の追従
性、復元性を向上させてシール性能を改善した金
属ガスケツトを実現することにある。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a metal gasket in which a plurality of beads are formed on an elastic metal plate to achieve a seal and a joint is formed by joining the plurality of beads. By providing a constricted part in which the bead width is gradually narrowed as it approaches the joint point of the joint, it improves the followability and recovery performance during cold and hot conditions at the joint, improving sealing performance. The objective is to realize a metal gasket with a high quality.
以下図面に基づいてこの発明の一実施例を説明
する。金属ガスケツト２は、弾性金属板たる基板
４と、この基板４の表裏面に設けた、軟質金属か
らなる図示省略の副板とからなる合計３枚を略一
枚状に積層させて構成し、シリンダブロツクとシ
リンダヘツド間の接合面にシールを果すべく介装
するものである。 An embodiment of the present invention will be described below based on the drawings. The metal gasket 2 is constructed by laminating three sheets in total into a substantially single sheet, consisting of a substrate 4 which is an elastic metal plate, and sub-plates (not shown) made of soft metal provided on the front and back surfaces of the substrate 4, It is installed at the joint surface between the cylinder block and cylinder head to achieve a seal.
そして、前記基板４はバネ鋼等からなり、この
バネ鋼等の弾性板にビード６を形成し、シリンダ
ブロツクとシリンダヘツド間のあらゆる歪を吸収
すべく構成する。このビード６には、シリンダ穴
８を囲繞する形で設けられた主ビード６ａがあ
り、またオイル通路穴１０を囲繞する形で設けら
れた第１ビード６ｂがあり、さらにシリンダ穴８
側の基板４の外形に沿つた形で設けられた第２ビ
ード６ｃがある。そして、この３個のビード６
ａ，６ｂ，６ｃによつて囲繞される接合面箇所の
シールを果すべく第１ビード６ｂと第２ビード６
ｃを接合し、接合部たる交叉部１２を形成する。 The substrate 4 is made of spring steel or the like, and beads 6 are formed on the elastic plate of the spring steel to absorb any strain between the cylinder block and the cylinder head. The bead 6 includes a main bead 6a surrounding the cylinder hole 8, a first bead 6b surrounding the oil passage hole 10, and a first bead 6b surrounding the cylinder hole 8.
There is a second bead 6c provided along the outer shape of the side substrate 4. And these three beads 6
The first bead 6b and the second bead 6 are used to seal the joint surface area surrounded by a, 6b, and 6c.
c is joined to form a crossing part 12 which is a joining part.
この交叉部１２については、拡大説明図たる第
２〜４図に示す如く、ビード高さＨを全域にわた
つて一様に形成する。第２ビード６ｃのビード幅
Ｌにおいては、平行ビードの端末、つまり−
断面におけるビード幅L1と接合点たる交交叉点
１４、つまり−断面におけるビード幅L2間
には、L1＞L2が成立すべくビード幅L1，L2を設
定する。 The crossing portion 12 is formed so that the bead height H is uniform over the entire area, as shown in FIGS. 2 to 4, which are enlarged explanatory views. In the bead width L of the second bead 6c, the end of the parallel bead, that is, -
The bead widths L 1 and L 2 are set so that L 1 >L 2 is satisfied between the bead width L 1 in the cross section and the intersection point 14, that is, the bead width L 2 in the - cross section.
そして、−断面と−断面間には、ビー
ド幅Ｌを交叉点１４に向つて先細りに形成する。
つまり交叉点１４に接近するに従つて両側より漸
次狭小させて形成するものである。一方、第１ビ
ード６ｂのビード幅Ｌにおいては、挾角部１６側
より漸次狭小させて形成する。これにより、第１
ビード６ｂと第２ビード６ｃとの挾角部１６に絞
り部１７を設けてシール線１８を確保し、完全シ
ールを得るようにしたものである。なお、第１図
において、２０はボルト孔、２２はセツト孔であ
る。 A bead width L is formed to taper toward the intersection point 14 between the - cross section and the - cross section.
In other words, it is formed so that it is gradually narrowed from both sides as it approaches the intersection point 14. On the other hand, the bead width L of the first bead 6b is formed to be gradually narrower from the side of the angular part 16. This allows the first
A constriction part 17 is provided at the angle part 16 between the bead 6b and the second bead 6c to secure the seal line 18 and obtain a complete seal. In FIG. 1, 20 is a bolt hole and 22 is a set hole.
次に作用について説明する。 Next, the effect will be explained.
シリンダヘツドとシリンダブロツク間の接合面
に介装した金属ガスケツト２においては、弾性金
属たる基板４に形成したビード６により、接合面
の歪による間隙が密封されて交叉部１２を除くビ
ード６には良好なシール線１８が形成され、接合
面におけるオイル、ガスのリーク防止が達成され
る。 In the metal gasket 2 interposed on the joint surface between the cylinder head and the cylinder block, the gap caused by strain on the joint surface is sealed by the bead 6 formed on the substrate 4, which is an elastic metal. A good seal line 18 is formed, and oil and gas leakage at the joint surfaces is prevented.
しかして、第１ビード６ｂと第２ビード６ｃと
が交叉する接合部たる交叉部１２においては、同
一のビード幅にて交叉するときは、各ビード６
ｂ，６ｃの弾性変形が挾角部１６に重合する。そ
の結果、挾角部１６は一様に弾性変形せず、交叉
点１４から放射するしわ等の複雑変形を生じ、こ
のため、シール線１８が切れてシール不良となる
傾向にある。 Therefore, in the crossing section 12, which is the joint section where the first bead 6b and the second bead 6c intersect, each bead 6
The elastic deformations of b and 6c are superimposed on the wedge portion 16. As a result, the wedge portion 16 does not undergo uniform elastic deformation, and complex deformations such as wrinkles radiate from the intersection point 14 occur, which tends to break the seal line 18 and result in poor sealing.
しかし、この発明では、挾角部１６には、接合
点たる交叉点１４に接近するにしたがつて漸次ビ
ード幅を狭小させて絞り部１７を形成したので、
挾角部１６に重合変形による複雑変形が生ぜず、
交叉点１４の付近でシール線１８が切れてしまう
ことがない。このことは基板４の表面における面
圧分布を示す第５図および基板４の裏面における
面圧分布を示す第６図において、面圧分布が著し
く変化する箇所が認められないことからして明ら
かである。 However, in the present invention, the constricted portion 17 is formed in the wedge portion 16 by gradually narrowing the bead width as it approaches the intersection point 14, which is the joining point.
Complicated deformation due to overlapping deformation does not occur in the wedge portion 16,
The seal line 18 will not be cut near the intersection point 14. This is clear from the fact that in FIG. 5, which shows the surface pressure distribution on the front surface of the substrate 4, and FIG. 6, which shows the surface pressure distribution on the back surface of the substrate 4, there is no place where the surface pressure distribution changes significantly. be.
これによつて接合面における完全シールが果さ
れるものである。 This achieves complete sealing at the joint surfaces.
なお、この発明は上記実施例に限定されるもの
でなく、種々の応用改変が可能であることは勿論
である。上記実施例ではビードの接合部を３本の
ビードが交叉する３叉路交叉部で説明したが、４
本以上の複数のビードが一点に集合する集合部に
対してもこの発明を適用してシール性を向上させ
ることができる。 It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made. In the above embodiment, the bead joint is described as a three-way intersection where three beads intersect, but four
The present invention can also be applied to a gathering part where a plurality of beads of more than one book are gathered at one point to improve the sealing performance.
以上の説明から明らかなように、この発明によ
れば、弾性金属板に複数のビードを形成してシー
ルを果すとともにこれら複数のビードを接合して
接合部を形成した金属ガスケツトにおいて、前記
複数のビードが接合してなる前記接合部にこの接
合部の接合点に接近するにしたがつて漸次ビード
幅を挟小させて絞り部を設けたので、シール不良
のおそれがある接合部に対しても優れた復元性を
発揮させて接合面の歪を吸収し、連続したシール
線を確保し、接合部と隣設接合部間のビードとあ
いまつてシール性を良好にし、吹き抜け等のリー
クの防止を改善し得る効果がある。 As is clear from the above description, according to the present invention, in the metal gasket in which a plurality of beads are formed on an elastic metal plate to achieve sealing and a joint portion is formed by joining the plurality of beads, Since a constricted portion is provided in the joint where the beads are joined by gradually narrowing the bead width as one approaches the joint point of the joint, it is possible to prevent joints where there is a risk of seal failure. Demonstrates excellent restorability, absorbs distortion of the joint surface, ensures a continuous seal line, and combines with the bead between the joint and adjacent joints to improve sealing performance and prevent leaks such as blow-throughs. There are effects that can be improved.
また、ビードの接合部には、重合変形による塑
性変形が生ずるおそれがないので、耐久性に優
れ、反復使用が可能となり、このため省資源に対
しても寄与し得る効果がある。 Furthermore, since there is no risk of plastic deformation due to polymerization deformation occurring at the joints of the beads, it has excellent durability and can be used repeatedly, which has the effect of contributing to resource conservation.
第１図はこの発明の一実施例に係る金属ガスケ
ツトを示す平面図、第２図は第１図の交叉部を示
す拡大平面図、第３図は第２図の−断面図、
第４図は第２図の−断面図、第５図は基板表
面の面圧分布図、第６図は基板裏面の面圧分布図
である。
２…金属ガスケツト、４…基板、６…ビード、
６ａ…主ビード、６ｂ…第１ビード、６ｃ…第２
ビード、１２…交叉部、４…交叉点、１７…絞り
部、１８…シール線。
FIG. 1 is a plan view showing a metal gasket according to an embodiment of the present invention, FIG. 2 is an enlarged plan view showing the intersection of FIG. 1, and FIG. 3 is a cross-sectional view taken from FIG.
FIG. 4 is a cross-sectional view of FIG. 2, FIG. 5 is a surface pressure distribution diagram on the front surface of the substrate, and FIG. 6 is a surface pressure distribution diagram on the back surface of the substrate. 2...Metal gasket, 4...Substrate, 6...Bead,
6a...Main bead, 6b...First bead, 6c...Second
Bead, 12...Cross section, 4...Cross point, 17...Aperture section, 18...Seal line.
Claims (1)
を果すとともにこれら複数のビードを接合して接
合部を形成した金属ガスケツトにおいて、前記複
数のビードが接合してなる前記接合部にこの接合
部の接合点に接近するにしたがつて漸次ビード幅
を挟小させて絞り部を設けたことを特徴とする金
属ガスケツト。1. In a metal gasket in which a plurality of beads are formed on an elastic metal plate to achieve a seal and a joint is formed by joining the plurality of beads, the joint formed by the plurality of beads is joined to the joint of the joint. A metal gasket characterized in that a constricted portion is provided by gradually narrowing the bead width as it approaches a joining point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3050582A JPS58149467A (en) | 1982-03-01 | 1982-03-01 | Metallic gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3050582A JPS58149467A (en) | 1982-03-01 | 1982-03-01 | Metallic gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58149467A JPS58149467A (en) | 1983-09-05 |
| JPH026375B2 true JPH026375B2 (en) | 1990-02-08 |
Family
ID=12305667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3050582A Granted JPS58149467A (en) | 1982-03-01 | 1982-03-01 | Metallic gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58149467A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6371457U (en) * | 1986-10-29 | 1988-05-13 | ||
| JPH0613428Y2 (en) * | 1987-12-03 | 1994-04-06 | 石川ガスケット株式会社 | Thin metal plate with reinforced seal beads |
| JPH0422132Y2 (en) * | 1988-02-19 | 1992-05-20 | ||
| JPH0613429Y2 (en) * | 1988-04-06 | 1994-04-06 | マツダ株式会社 | Metal gasket |
| JPH10169556A (en) * | 1996-12-12 | 1998-06-23 | Toyota Autom Loom Works Ltd | Gasket for compressor |
-
1982
- 1982-03-01 JP JP3050582A patent/JPS58149467A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58149467A (en) | 1983-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0230804B1 (en) | Metallic gasket | |
| EP0433530B1 (en) | Steel laminate gasket with wide sealing area | |
| EP0385699B1 (en) | A steel laminate gasket | |
| GB2063386A (en) | Gaskets | |
| JP2001173788A (en) | Metal gasket | |
| JPS6354944B2 (en) | ||
| JP3016077B2 (en) | Metal cylinder head gasket | |
| EP0544951B1 (en) | Gasket | |
| US5062649A (en) | Steel laminate gasket with wide sealing area | |
| JPH023025B2 (en) | ||
| US5382029A (en) | Metal laminate gasket with deformation preventing mechanism | |
| JPS61255251A (en) | Laminated metal gasket | |
| JPH0563671B2 (en) | ||
| JPS58149467A (en) | Metallic gasket | |
| JPS5997363A (en) | Metal gasket | |
| JP3312659B2 (en) | Metal gasket processing method | |
| JPH10196790A (en) | Cylinder head gasket | |
| JPH0642134Y2 (en) | Bead structure of metal gasket | |
| JPS5947562A (en) | Metal gasket | |
| JP3357469B2 (en) | Cylinder head gasket | |
| JP2580808Y2 (en) | Metal laminated gasket | |
| JP2571092B2 (en) | Metal gasket | |
| JPH0516460Y2 (en) | ||
| JPH0562670B2 (en) | ||
| JPH07133868A (en) | Laminated metal gasket |