JPS628459Y2 - - Google Patents
Info
- Publication number
- JPS628459Y2 JPS628459Y2 JP1978023734U JP2373478U JPS628459Y2 JP S628459 Y2 JPS628459 Y2 JP S628459Y2 JP 1978023734 U JP1978023734 U JP 1978023734U JP 2373478 U JP2373478 U JP 2373478U JP S628459 Y2 JPS628459 Y2 JP S628459Y2
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- wide
- rising
- raised
- cylinder head
- 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
- 230000000630 rising effect Effects 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 18
- 230000007423 decrease Effects 0.000 claims description 8
- 230000013011 mating Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation 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〉
この考案は、上下面がシール面とされ、水平部
に連接して***円弧部をもちゴム状弾性体で成形
されたガスケツトに関する。[Detailed Description of the Invention] <Industrial Field of Application> This invention relates to a gasket molded from a rubber-like elastic material, the upper and lower surfaces of which serve as sealing surfaces, and which have a raised arcuate portion connected to the horizontal portion.
〈従来の技術〉
ここでは、第１図で示すように、シリンダヘツ
ド１とヘツドカバー２との合せ面をシールするた
めに使用するガスケツトを例に採つて説明するが
これに限られるものではない。<Prior Art> Here, as shown in FIG. 1, a gasket used for sealing the mating surfaces of a cylinder head 1 and a head cover 2 will be described as an example, but the gasket is not limited thereto.
シリンダヘツド１の長手方向両端の上端中央に
は半円状***部１ａが形成されている。 A semicircular raised portion 1a is formed at the center of the upper end of both longitudinal ends of the cylinder head 1.
シリンダヘツド１とヘツドカバー２との合せ面
（シール部）のシールは、第１図Ａで示すよう
な、上下面がシール面とされゴム状弾性体で成形
された断面形状矩形のガスケツト４を、シリンダ
ヘツド１の合せ面と、ヘツドカバー２の合せ面と
の間に挾着して、複数本の締付ボルト５で締付け
て行なう。 The sealing of the mating surface (sealing part) between the cylinder head 1 and the head cover 2 is achieved by using a gasket 4 with a rectangular cross-section made of a rubber-like elastic material and with the upper and lower surfaces serving as sealing surfaces, as shown in FIG. 1A. It is clamped between the mating surface of the cylinder head 1 and the mating surface of the head cover 2, and is tightened with a plurality of tightening bolts 5.
〈考案が解決しようとする問題点〉
このとき、ガスケツト４の***円弧部１６の水
平部７からの立上り部１６ａには、締付力が円弧
の中心方向（半径方向）に対してよりも、垂直下
方に対して大きく分力されるので、該立上り部１
６ａでは半径方向への圧縮力が小さくなり、シー
ル作用を奏するのに十分な圧縮力を得がたかつ
た。また、ガスケツト４の半径方向の厚み、又
は、シリンダヘツド１及びヘツドカバー２のシー
ル面には寸法上の多少バラツキがあることが多
い。このため、締付けに際し***円弧部１６の中
央部１６ｂが、他部、すなわち立上り部１６ａ、
及び***円弧部１６に連接する水平連接部７ａが
シール作用を奏するに十分な圧縮力を受ける前
に、圧縮の死点に達することがある。従つて、立
上り部１６ａ及び水平連接部７ａに良好なシール
性能を得がたかつた。<Problem to be solved by the invention> At this time, the tightening force is applied to the rising portion 16a of the raised arc portion 16 of the gasket 4 from the horizontal portion 7 than in the center direction (radial direction) of the arc. Since a large force is applied vertically downward, the rising portion 1
In case 6a, the compressive force in the radial direction was small, and it was difficult to obtain a compressive force sufficient to perform a sealing action. Further, there is often some dimensional variation in the radial thickness of the gasket 4 or the sealing surfaces of the cylinder head 1 and head cover 2. Therefore, when tightening, the central portion 16b of the raised circular arc portion 16 is removed from other portions, that is, the rising portion 16a,
The compression dead point may be reached before the horizontal connecting portion 7a connected to the raised circular arc portion 16 receives a sufficient compressive force to perform a sealing action. Therefore, it was difficult to obtain good sealing performance at the rising portion 16a and the horizontal connecting portion 7a.
〈考案の目的〉
この考案は、上記にかんがみて、水平部に連接
して***円弧部をもつガスケツトにおいて、立ち
上り部及び水平連接部に良好なシール性能を得る
ことができるようにすることを目的とする。<Purpose of the invention> In view of the above, the purpose of this invention is to make it possible to obtain good sealing performance at the rising part and the horizontal connecting part in a gasket having a raised arc part connected to the horizontal part. shall be.
〈問題点を解決するための手段〉
この考案者らは、上記問題点を解決するために
鋭意開発に努力した結果、下記構成のガスケツト
に想到した。<Means for Solving the Problems> As a result of intensive development efforts in order to solve the above problems, the inventors came up with a gasket having the following configuration.
上下面がシール面とされ水平部に連接して***
円弧部をもちゴム状弾性体で成形されたガスケツ
トにおいて、前記***円弧部が厚肉の幅広部分
と、該幅広部分の上面又は下面に形成される条リ
ツプ部分とからなり、前記幅広部分の半径方向の
厚みが立上り部から中央部に向つて漸減し、かつ
前記条リツプ部分の半径方向の高さが中央部から
立上り部に向つて漸減していることを特徴とす
る。 In a gasket molded from a rubber-like elastic body, the upper and lower surfaces are sealing surfaces and have a raised circular portion connected to a horizontal portion, the raised circular portion is formed on a thick wide portion and on the upper or lower surface of the wide portion. The radial thickness of the wide portion gradually decreases from the rising portion toward the center, and the radial height of the wide portion gradually decreases from the center toward the rising portion. It is characterized by the fact that
〈実施例〉
以下、この考案の一実施例を、図例に基づいて
説明する。<Example> Hereinafter, an example of this invention will be described based on illustrated examples.
第２〜４図に示すように、従来と同様の***円
弧部をもつガスケツトにおいて、***円弧部１６
が、厚肉の幅広部分６と、幅広部分６の下面に形
成される条リツプ部分８とからなる。幅広部分６
は立上り部１６ａが水平連接部７ａと同一面形
（矩形）で形成されているが、幅広部分６の厚さ
は、立上り部１６ａから中央部１６ｂに向つて漸
減している。また、条リツプ部分８の半径方向の
高さは央部１６ｂから立上り部１６ａに向つて漸
減している。この条リツプ部分８は、先の幅広部
分６の半径方向の厚みを頂部に向つて漸減したの
を寸法のバラツキを考慮して多少高めに補完する
ように形成するのが好ましい。第５図Ｂに基づい
て説明すると、幅広部分６の外周円弧（半径
Ro）と、条リツプ部分８の内周円弧（半径Ri）
とは同心円状となるように形成され、幅広部分６
の肉厚と条リツプ部分８の高さの合計は各部位に
おいて等しくなる（即ちRo−Ri＝ta＋ha＝tb＋
hb）。そして、この幅広部分６と条リツプ部分８
からなる***円弧部１６の厚み（Ro−Ri）は、
５図Ａで示すように、シリンダヘツド１の半円隆
起部１ａ（半径ri）とヘツドカバー２の円弧状切
欠部２ａ（半径ro）とが同心円状に配されたとき
の隙間高さro−riより若干大きく設定しておく。 As shown in FIGS. 2 to 4, in a gasket having a raised arc portion similar to the conventional gasket, the raised arc portion 16
It consists of a thick wide part 6 and a striped lip part 8 formed on the lower surface of the wide part 6. Wide part 6
Although the rising portion 16a is formed in the same plane (rectangular shape) as the horizontal connecting portion 7a, the thickness of the wide portion 6 gradually decreases from the rising portion 16a toward the central portion 16b. Further, the height of the rib portion 8 in the radial direction gradually decreases from the central portion 16b toward the rising portion 16a. It is preferable that this strip lip portion 8 is formed so as to complement the radial thickness of the previous wide portion 6, which is gradually reduced toward the top, by making it slightly higher in consideration of dimensional variations. To explain based on FIG. 5B, the outer circumferential arc (radius
Ro) and the inner circumferential arc (radius Ri) of the strip lip portion 8
The wide part 6 is formed concentrically with the wide part 6.
The sum of the wall thickness of
hb). Then, this wide part 6 and the row lip part 8
The thickness (Ro−Ri) of the raised circular arc portion 16 is
As shown in Fig. 5A, the gap height ro-ri when the semicircular raised portion 1a (radius ri) of the cylinder head 1 and the arcuate notch 2a (radius ro) of the head cover 2 are arranged concentrically. Set it slightly larger.
従つて、ガスケツト４Ａ、シリンダヘツド１、
ヘツドカバー２等に、寸法のバラツキがあつても
***円弧部の中央部１６ｂの条リツプ部分を含ん
だ全高は水平部７より小さくなることはない。 Therefore, gasket 4A, cylinder head 1,
Even if there are variations in dimensions of the head cover 2, etc., the total height including the striped lip portion of the central portion 16b of the raised circular arc portion will not become smaller than the horizontal portion 7.
なお、条リツプ部分８は図例では１本でありか
つ下面に設けられているが、複数本でもよく、条
リツプ部分８を設ける面は上面でもよい。 In the illustrated example, one strip lip portion 8 is provided on the bottom surface, but a plurality of strips may be provided, and the surface on which the strip lip portion 8 is provided may be on the top surface.
次に、上記実施例の使用態様を述べる。ヘツド
カバー２の組付溝２ａにガスケツト４Ａを嵌め込
んで、ガスケツト４Ａを組み付けたヘツドカバー
２を、シリンダヘツド１に、締付ボルト５により
所定のトルクで締付固定する。 Next, the manner of use of the above embodiment will be described. The gasket 4A is fitted into the installation groove 2a of the head cover 2, and the head cover 2 with the gasket 4A installed is secured to the cylinder head 1 by tightening bolts 5 with a predetermined torque.
ヘツドカバー２を締付ボルト５で締付けていく
と、条リツプ部分８、立上り部１６ａの幅広部分
６、水平連接部７ａ及び中央部１６ｂの幅広部分
６が相前後して当接し圧縮されていく。このと
き、ガスケツト４Ａの半径方向の厚み、シリンダ
ヘツド１又はヘツドカバー２のシール面に寸法上
の多少のバラツキがあつても、立上り部１６ａ及
び水平連接部７ａには第４図で示すように、シー
ル作用を奏するのに十分な圧縮力を受ける。その
理由は次の如くである。中央部よりの条リツプ部
分８がシリンダヘツド１のシール面に先に当接し
ても、条リツプ部分８はベンデイングしやすく、
第３図に示すように小さな圧縮力でベンデイング
し、かつ、幅広部分６の半径方向の肉厚が立上り
部１６ａから中央部１６ｂに向つて漸減している
ので水平連接部７ａがシール作用を奏するのに十
分な圧縮力を受ける前に、中央部１６ｂの幅広部
分６が圧縮の死点に達することはない。なお、隆
起円弧部の中央部１６ｂは大きな圧縮力を受けな
くても、前述の如く、条リツプ部分８がベンデイ
ングしてシリンダヘツドの合せ面になじむため、
条リツプ部分８により良好にシールされる。ま
た、上記のように、幅広部分６の半径方向の肉厚
が立上り部１６ａから中央部１６ｂに向つて漸減
しているので、水平連接部７ａには相対的に中央
部１６ｂに比して大きな垂直方向の圧縮力を加え
ることができ、水平連接部７ａを形成する弾性体
（ゴム）が立上り部１６ａを半径方向（中心方
向）へ押付けるように作用し、立上り部１６ａの
半径方向の圧縮力を増大させ、立上り部１６ａの
シール性を向上させる。 When the head cover 2 is tightened with the tightening bolts 5, the strip lip portion 8, the wide portion 6 of the rising portion 16a, the horizontal connecting portion 7a and the wide portion 6 of the central portion 16b come into contact one after another and are compressed. At this time, even if there is some dimensional variation in the radial thickness of the gasket 4A and the sealing surface of the cylinder head 1 or the head cover 2, the rising portion 16a and the horizontal connecting portion 7a have the same shape as shown in FIG. Subject to sufficient compressive force to provide a sealing action. The reason is as follows. Even if the strip lip portion 8 from the center comes into contact with the sealing surface of the cylinder head 1 first, the strip lip portion 8 is likely to bend.
As shown in FIG. 3, the horizontal connecting portion 7a performs a sealing action because it bends with a small compressive force and the thickness of the wide portion 6 in the radial direction gradually decreases from the rising portion 16a to the central portion 16b. The wide portion 6 of the central portion 16b does not reach the dead point of compression before being subjected to a sufficient compressive force to Note that even if the central portion 16b of the raised arc portion does not receive a large compressive force, the strip lip portion 8 bends and adapts to the mating surface of the cylinder head, as described above.
The strip lip portion 8 provides a good seal. Further, as described above, since the radial thickness of the wide portion 6 gradually decreases from the rising portion 16a toward the center portion 16b, the horizontal connecting portion 7a has a relatively large thickness compared to the center portion 16b. A compressive force in the vertical direction can be applied, and the elastic body (rubber) forming the horizontal connecting portion 7a acts to press the rising portion 16a in the radial direction (towards the center), thereby compressing the rising portion 16a in the radial direction. This increases the force and improves the sealing performance of the rising portion 16a.
〈考案の効果〉
この考案のガスケツトは、上記のような構成な
ので、水平部に対して***円弧部をもつガスケツ
トにおいて、上記の如く、***円弧部の立上り部
及び水平連接部に良好なシール性能を得ることが
でき、信頼性が高い。<Effects of the invention> Since the gasket of this invention has the above-mentioned configuration, in a gasket having a raised circular arc portion relative to the horizontal portion, good sealing performance is achieved at the rising portion of the raised circular portion and the horizontal connecting portion as described above. can be obtained and is highly reliable.
第１図はこの考案ガスケツトの適用箇所を示す
シリンダヘツドとヘツドカバーの斜視図、第１図
Ａは従来のガスケツトの部分斜視図、第２図はこ
の考案の一実施例を示すガスケツトの部分切欠斜
視図、第３図は第２図のガスケツトの−線部
の装着状態断面図、第４図は第２図のガスケツト
の−線部の装着状態断面図、第５図Ａはシリ
ンダヘツドとヘツドカバーの位置関係を示す断面
図、第５図Ｂは第２図のガスケツトの***円弧部
の要部図である。
１……シリンダヘツド、２……ヘツドカバー、
４，４Ａ……ガスケツト、７……水平部、７ａ…
…水平連接部、８……条リツプ部分、１６……隆
起円弧部、１６ａ……立上り部、６１ｂ……中央
部。
Fig. 1 is a perspective view of the cylinder head and head cover showing the application areas of this invented gasket, Fig. 1A is a partial perspective view of a conventional gasket, and Fig. 2 is a partially cutaway perspective view of a gasket showing an embodiment of this invention. Figure 3 is a cross-sectional view of the gasket shown in Figure 2 in the - lined section, Figure 4 is a cross-sectional view of the gasket shown in Figure 2 in the installed state, and Figure 5A is a cross-sectional view of the cylinder head and head cover. FIG. 5B, which is a sectional view showing the positional relationship, is a main part view of the raised circular arc portion of the gasket shown in FIG. 2. 1...Cylinder head, 2...Head cover,
4,4A...Gasket, 7...Horizontal part, 7a...
...Horizontal connecting portion, 8...Rip portion, 16...Rising arc portion, 16a...Rising portion, 61b...Central portion.
Claims (1)
円弧部をもちゴム状弾性体で成形されたガスケツ
トにおいて、前記***円弧部が厚肉の幅広部分
と、該幅広部分の上面又は下面に形成される条リ
ツプ部分とからなり、前記幅広部分の半径方向の
厚みが立上り部から中央部に向つて漸減し、かつ
前記条リツプ部分の半径方向の高さが中央部から
立上り部に向つて漸減している構成のガスケツ
ト。 In a gasket molded from a rubber-like elastic body, the upper and lower surfaces are sealing surfaces and have a raised circular portion connected to a horizontal portion, the raised circular portion is formed on a thick wide portion and on the upper or lower surface of the wide portion. The radial thickness of the wide portion gradually decreases from the rising portion toward the center, and the radial height of the wide portion gradually decreases from the center toward the rising portion. The gasket has the following configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978023734U JPS628459Y2 (en) | 1978-02-25 | 1978-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978023734U JPS628459Y2 (en) | 1978-02-25 | 1978-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54127059U JPS54127059U (en) | 1979-09-04 |
| JPS628459Y2 true JPS628459Y2 (en) | 1987-02-27 |
Family
ID=28860892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978023734U Expired JPS628459Y2 (en) | 1978-02-25 | 1978-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS628459Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60110116U (en) * | 1983-12-29 | 1985-07-26 | 松下電器産業株式会社 | Automotive air conditioner unit case |
| JPH0614118Y2 (en) * | 1988-09-13 | 1994-04-13 | 三國工業株式会社 | Three-dimensional 0 ring |
-
1978
- 1978-02-25 JP JP1978023734U patent/JPS628459Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54127059U (en) | 1979-09-04 |
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