JPH0341170Y2 - - Google Patents
Info
- Publication number
- JPH0341170Y2 JPH0341170Y2 JP2384186U JP2384186U JPH0341170Y2 JP H0341170 Y2 JPH0341170 Y2 JP H0341170Y2 JP 2384186 U JP2384186 U JP 2384186U JP 2384186 U JP2384186 U JP 2384186U JP H0341170 Y2 JPH0341170 Y2 JP H0341170Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- cylinder head
- shim member
- gasket
- bead
- 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 33
- 239000011324 bead Substances 0.000 claims description 13
- 238000010030 laminating Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000009751 slip forming Methods 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、主としてエンジンのシリンダヘツド
とシリンダブロツクとの間に介設される金属ガス
ケツトの構造に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention mainly relates to the structure of a metal gasket interposed between a cylinder head and a cylinder block of an engine.
（従来技術）
従来、エンジンのシリンダブロツクとシリンダ
ヘツドとの間に介設するガスケツトとして、アス
ベスト等の弾性機能を有するものを用いていた
が、その弾性機能により初期のシール性は優れる
が、ガスケツトはシリンダヘツドの熱変形荷重、
燃焼室での爆発等によつてシリンダヘツドが大き
く動き、ガスケツトに大きな荷重が繰返し作用
し、それによつて早期に寿命に至るという問題が
あつた。(Prior art) Conventionally, materials with elastic properties such as asbestos have been used as gaskets interposed between the cylinder block and cylinder head of engines. is the thermal deformation load of the cylinder head,
There was a problem in that the cylinder head moved significantly due to an explosion in the combustion chamber, and a large load was repeatedly applied to the gasket, resulting in premature end of its life.
そこで、例えば実開昭57−126553号公報に記載
されるように、複数の金属板を積重ねてなり、下
側の金属板を折返して上側の金属板の端縁に巻付
けた金属ガスケツトを用いることが提案されてい
る。 Therefore, for example, as described in Japanese Utility Model Application Publication No. 57-126553, a metal gasket is used in which a plurality of metal plates are stacked and the lower metal plate is folded back and wrapped around the edge of the upper metal plate. It is proposed that.
そのようなものにおいて、シール性を高めるた
めに、上側の金属板のシリンダボアとなる開口部
の周囲にビード部を形成し面圧を高めることが行
われているが、このビード部は金属板を折曲して
形成しているだけなので、シリンダヘツドの熱変
形、燃焼室での爆発等の影響を受けてガスケツト
がへたり、やはり早期にシール性が低下するとい
う問題がある。 In such products, in order to improve sealing performance, a bead is formed around the opening that becomes the cylinder bore in the upper metal plate to increase surface pressure. Since it is only formed by being bent, the gasket is subject to the effects of thermal deformation of the cylinder head, explosion in the combustion chamber, etc., causing the gasket to wear out, resulting in a problem that the sealing performance deteriorates at an early stage.
（考案の目的）
本考案はかかる点に鑑みてなされたもので、シ
リンダヘツドの熱変形等に起因する該シリンダヘ
ツドの動きを小さくし、シール性の低下を抑制し
た金属ガスケツトの構造を提供するものである。(Purpose of the invention) The present invention has been made in view of the above points, and it is an object of the present invention to provide a metal gasket structure that reduces the movement of the cylinder head caused by thermal deformation of the cylinder head and suppresses the deterioration of sealing performance. It is something.
（考案の構成）
本考案においては、複数の金属板が積層され、
上側の金属板のシリンダボアとなる開口部の周囲
にビード部が形成され、該上側の金属板の端縁に
下側の金属板が巻付けられている。しかして、上
記開口部の周囲にビード部よりも高さが低く剛性
の高いシム部材が連続して配設されている。(Structure of the invention) In the invention, a plurality of metal plates are laminated,
A bead portion is formed around an opening that becomes a cylinder bore of the upper metal plate, and a lower metal plate is wound around the edge of the upper metal plate. A shim member having a lower height and higher rigidity than the bead portion is continuously disposed around the opening.
このシム部材によつて、熱変形等に起因するシ
リンダヘツドによるビード部の押圧が規制され、
ビード部に加わる荷重が低減される。 This shim member prevents the cylinder head from pressing the bead due to thermal deformation, etc.
The load applied to the bead portion is reduced.
（実施例）
以下、本考案の実施例を図面に沿つて説明す
る。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図乃至第４図において、１は金属ガスケツ
トで、上下側に金属板２，３が積層され、端縁に
おいて下側の金属板３が上側の金属板２に巻付け
られて一体に結合されてなり、シリンダボアとな
る４つの開口部１ａが開設されている。４は挿通
孔で、シリンダヘツドをシリンダブロツクに組付
ける締付ボルトＡが挿通される。 1 to 4, 1 is a metal gasket, metal plates 2 and 3 are stacked on the upper and lower sides, and the lower metal plate 3 is wrapped around the upper metal plate 2 at the edge and joined together. Four openings 1a, which serve as cylinder bores, are opened. 4 is an insertion hole through which a tightening bolt A for assembling the cylinder head to the cylinder block is inserted.
上側の金属板２には、開口部１ａに周囲にビー
ド部２ａが連続して形成されている。ビード部２
ａは、上側の金属板２の一部が上方に突出するよ
うに折曲して、断面山形状に形成されている。 In the upper metal plate 2, a bead portion 2a is continuously formed around the opening 1a. Bead part 2
A is formed by bending a portion of the upper metal plate 2 so as to protrude upward, so that it has a mountain-shaped cross section.
また、開口部１ａの周縁を形成する下側の金属
板３の端縁は、第２図及び第３図に示すように、
水平基部３ａと、該水平基部３ａより鉛直上方に
延びる鉛直部３ｂと、該鉛直部３ａ上縁より半径
方向外方に延びる上側水平部３ｃとを有し、しか
して下側の金属板３の鉛直部３ｂと、上側の金属
板２の端縁２ｂとの間にシム部材５が配設されて
いる。このシム部材５は、両金属板２，３よりも
剛性が高く、上側の金属板２よりも厚さは厚い
が、ビード部２ａよりも高さが低くなつている。
また、シム部材５は、全ての開口部１ａの周囲に
対して連続して一体的に形成され、上下方向にお
いては下側の金属板３の水平基部３ａと上側水平
部３ｃにて、水平方向においては下側の金属板３
の鉛直部３ｂと上側の金属板２の端縁２ｂにて移
動不能に固定されている。 Further, the edge of the lower metal plate 3 forming the periphery of the opening 1a is as shown in FIGS. 2 and 3.
It has a horizontal base portion 3a, a vertical portion 3b extending vertically upward from the horizontal base portion 3a, and an upper horizontal portion 3c extending radially outward from the upper edge of the vertical portion 3a. A shim member 5 is disposed between the vertical portion 3b and the edge 2b of the upper metal plate 2. This shim member 5 has higher rigidity than both metal plates 2 and 3, is thicker than the upper metal plate 2, but has a lower height than the bead portion 2a.
Further, the shim member 5 is continuously and integrally formed around all the openings 1a, and in the vertical direction, the shim member 5 is formed at the horizontal base 3a and the upper horizontal part 3c of the lower metal plate 3. In the lower metal plate 3
It is fixed immovably by the vertical portion 3b of the metal plate 2 and the edge 2b of the upper metal plate 2.
上記のように構成すれば、シリンダヘツドの熱
変形、燃焼室での爆発等により、シリンダヘツド
がビード部２ａを押圧してそれを変形させようと
しても、その変形量が一定量を越えると、シリン
ダヘツドはシム部材５の上面５ａに当接し荷重は
主として剛性の高いシム部材５が受けることとな
る。したがつて、シリンダヘツドの動きが従来に
比べて小さくなつてビード部２ａのへたりは抑制
され、シール性の低下は防止され、その結果、ガ
スケツト１の使用寿命が延びる。 With the above configuration, even if the cylinder head presses the bead portion 2a and attempts to deform it due to thermal deformation of the cylinder head, explosion in the combustion chamber, etc., if the amount of deformation exceeds a certain amount, The cylinder head comes into contact with the upper surface 5a of the shim member 5, and the load is mainly borne by the shim member 5, which has high rigidity. Therefore, the movement of the cylinder head is smaller than in the past, and the bead portion 2a is prevented from becoming sagging, preventing deterioration in sealing performance, and as a result, the service life of the gasket 1 is extended.
上記実施例においては、シム部材５の上面５ａ
を平坦面としているが、シリンダヘツドの下面Ｓ
は締付ボルトＡの締付けにより湾曲するので（第
４図参照）、その湾曲形状に対応して上面を湾曲
させることによりシム部材の板厚を変化させ、組
付状態においてシリンダヘツドの下面Ｓとシム部
材の上面との間の隙間をなくすようにすることも
できる。 In the above embodiment, the upper surface 5a of the shim member 5
is a flat surface, but the lower surface S of the cylinder head
is curved when the tightening bolt A is tightened (see Fig. 4), so by curving the upper surface in accordance with the curved shape, the plate thickness of the shim member is changed, and in the assembled state, the lower surface S of the cylinder head and It is also possible to eliminate the gap between the upper surface of the shim member and the upper surface of the shim member.
（考案の効果）
本考案は、上記のように、熱変形等に起因する
シリンダヘツドの一定量以上の動きをシム部材に
て規制するようにしたので、シール性の早期低下
を抑制でき、使用寿命が延びる。(Effects of the invention) As mentioned above, the present invention uses a shim member to restrict the movement of the cylinder head beyond a certain amount due to thermal deformation, etc., so it is possible to suppress early deterioration of sealing performance and prevent use. Extends lifespan.
図面は本考案の実施例を示すもので、第１図は
金属ガスケツトの構造を示す平面図、第２図乃至
第４図はそれぞれ第１図の−線、−線及
び−線における断面図である。
１……金属ガスケツト、１ａ……開口部、２，
３……金属板、２ａ……ビード部、５……シム部
材。
The drawings show an embodiment of the present invention, and FIG. 1 is a plan view showing the structure of a metal gasket, and FIGS. 2 to 4 are cross-sectional views taken along lines -, -, and - in FIG. 1, respectively. be. 1... Metal gasket, 1a... Opening, 2,
3...Metal plate, 2a...Bead portion, 5...Shim member.
Claims (1)
のシリンダボアとなる開口部の周囲にビード部が
形成され、下側の金属板が上側の金属板の端縁に
巻付けられてなるガスケツトであつて、上記開口
部の周囲に上記ビード部よりも高さが低く剛性の
高いシム部材が連続して配設されていることを特
徴とする金属ガスケツトの構造。 A gasket made by laminating multiple metal plates, with a bead formed around the opening of the upper metal plate that becomes the cylinder bore, and the lower metal plate wrapped around the edge of the upper metal plate. A metal gasket structure characterized in that a shim member having a lower height and higher rigidity than the bead portion is continuously disposed around the opening portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2384186U JPH0341170Y2 (en) | 1986-02-19 | 1986-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2384186U JPH0341170Y2 (en) | 1986-02-19 | 1986-02-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62134966U JPS62134966U (en) | 1987-08-25 |
| JPH0341170Y2 true JPH0341170Y2 (en) | 1991-08-29 |
Family
ID=30822515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2384186U Expired JPH0341170Y2 (en) | 1986-02-19 | 1986-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0341170Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2603471Y2 (en) * | 1993-12-28 | 2000-03-13 | 国産部品工業株式会社 | Metal gasket |
| JP2730478B2 (en) * | 1994-03-15 | 1998-03-25 | 国産部品工業株式会社 | Metal gasket |
-
1986
- 1986-02-19 JP JP2384186U patent/JPH0341170Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62134966U (en) | 1987-08-25 |
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