JPH02138574A - Gasket - Google Patents

Abstract

PURPOSE:To reduce the reaction by a gasket and to obtain a sufficient airtight by providing a protruded part having a large curvature in the contact part of the gasket with a substance. CONSTITUTION:The face of a substance to be adhered is touched with a protruded part 2. As the protruded part 2 has a pressure receiving area smaller than other parts, a gasket 1 is easily deformed by vertical external forces. Therefore, it gives only a small reaction to the subjected pushed thereto. On the other hand, the protruded part 2 has a small contact area because of its small curvature, and even if the pushing force is small, a sufficient face pressure of the contact part can be obtained to maintain the air tight.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、内部と外部の圧力差により複数の物体を密着
させる構造に使用するガスケットに係り、特に、ガスケ
ットの反力による。物体の変形・浮きを小さくしつつ、
気密の得られるガスケットに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a gasket used in a structure in which a plurality of objects are brought into close contact with each other due to a pressure difference between the inside and the outside, and in particular, the present invention relates to a gasket that is used in a structure in which a plurality of objects are brought into close contact with each other due to a pressure difference between the inside and the outside, and in particular, by the reaction force of the gasket. While reducing the deformation and floating of objects,
Concerning gaskets that provide airtightness.

〔従来の技術〕[Conventional technology]

従来、大気圧等の外圧を利用して、複数の物体を密着さ
せる場合に、日本工業規格「０リング」（ＪＩＳ　　Ｂ
２４０１−１９７７）に記載の様に。Conventionally, when using external pressure such as atmospheric pressure to bring multiple objects into close contact, the Japanese Industrial Standard "O-ring" (JIS B
2401-1977).

０リング又は板状のゴムをガスケットとして使い、周辺
をネジ止めする等の手段で、ガスケットに充分な変形を
与えるか、又は物体間を気密にせず、負圧で吸引しつづ
ける方式がとられて来た。Either use an O-ring or plate-shaped rubber as a gasket and give sufficient deformation to the gasket by screwing the periphery, or use a method that continues to draw negative pressure without creating an airtight space between objects. It's here.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上記従来技術の内、ガスケットを用いる場合は、ネジ止
め等により、ガスケットを充分変形させねば気密が保て
ず、例えば板状の剛性の低い物体を他の物体に密着させ
たい場合、ガスケットの反力又はネジの締結力の過多に
より、板状物体に湾曲が生じ易く、均一な密着が得られ
る様に調整するのは難かしい、至極軟かいゴムでガスケ
ットを作れば上記したネジ止めを使用しなくても良いが
、ゴムは軟かくしすぎると、経年変化で弾性が失なわれ
たり、傷が付き易く、耐久性に欠けるようになる。Among the above conventional techniques, when using a gasket, airtightness cannot be maintained unless the gasket is sufficiently deformed by screwing or the like. Excessive force or screw tightening force tends to cause the plate-shaped object to curve, and it is difficult to adjust it to achieve uniform adhesion.If the gasket is made of extremely soft rubber, the above-mentioned screw fixation can be used. Although it is not necessary, if the rubber is made too soft, it will lose its elasticity over time, be easily scratched, and lack durability.

一方、気密を保たない方式では、常に負圧による吸引を
続けねばならず、移動を要する場合には配管と伴に移動
させねばならない。On the other hand, in a system that does not maintain airtightness, suction must be constantly maintained using negative pressure, and if movement is required, it must be moved together with the piping.

本発明の目的は、ガスケットによる反力が小さく、かつ
、接触部の面圧が充分得られ気密を保てるガスケットを
供給することにある。An object of the present invention is to provide a gasket which has a small reaction force due to the gasket, and which can obtain sufficient surface pressure at the contact portion to maintain airtightness.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的は、ガスケットの物体との接触部分に、曲率の
大きなとつ形部を設けることにより、達成される。The above object is achieved by providing a horn-shaped portion with a large curvature in the contact portion of the gasket with an object.

〔作用〕[Effect]

上記とつ形部は、他の部分と比し、受圧面積が小さいた
め、大きな変形をさせても反力が小さく。The above-mentioned horn-shaped portion has a smaller pressure-receiving area than other portions, so even if it is deformed to a large extent, the reaction force is small.

密着させたい物体の浮き上りや、変形が防止できる。It can prevent objects that you want to make close contact with from lifting up or deforming.

また上記とつ形部は、物体との接触部で曲率が大きいた
め、接触面積が小さく、接触面圧が充分にとれるので、
気密が保たれる。In addition, since the above-mentioned horn-shaped part has a large curvature at the part where it contacts the object, the contact area is small and sufficient contact surface pressure can be obtained.
Airtightness is maintained.

〔実施例〕〔Example〕

以下１本発明の一実施例を第１図〜第３図により説明す
る。第１図は、本発明に関るとつ形部付ガスケットの斜
視図、第２図は、その断面図、第３図は、断面部の拡大
図である。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 is a perspective view of a gasket with a horn-shaped portion according to the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is an enlarged view of the sectional portion.

２がとつ形部であり、このとつ形部２に密着させたい物
体の面が当たる。ここでこのとつ形部２は、他の部分よ
り受圧面積が小さいため、第２図に示した様な上下から
の外力により、本ガスケットは容易に変形する。このた
め、押当てられた物体に対し、小さな反力しか与えない
。一方、とつ形部２は、その曲率が小さいため接触面積
が小さく、押当てる力が小さくても接触部の面圧は充分
に得られ気密が保たれる。2 is a horn-shaped portion, and the surface of the object to be brought into close contact with this horn-shaped portion 2 comes into contact. Here, since the pressure-receiving area of the truncated portion 2 is smaller than that of other portions, the present gasket is easily deformed by external forces from above and below as shown in FIG. Therefore, only a small reaction force is applied to the object pressed against it. On the other hand, since the curvature of the horn-shaped portion 2 is small, the contact area is small, and even if the pressing force is small, sufficient surface pressure can be obtained at the contact portion and airtightness can be maintained.

第９図に、本実施例によるとつ形部付ガスケットの使用
例を示す。本使用例は、シート状の試料３を定盤５と、
透明な上板４の間に挟み、定盤５と上板４の間隙を減圧
する事で、大気圧によって。FIG. 9 shows an example of use of the gasket with a cone-shaped portion according to this embodiment. In this usage example, a sheet-like sample 3 is placed on a surface plate 5,
By sandwiching it between the transparent upper plate 4 and reducing the pressure in the gap between the surface plate 5 and the upper plate 4, the atmospheric pressure is applied.

上板４を定盤５に押し付け、試料３を観察する装置であ
る。ここで、とつ形部２が上板４に当たるが、とつ形部
２は変形しやすいため、上板４を押上げる力は少さく、
上板４を変形させたり、浮かせることなく、試料３の全
域に渡りほぼ均一な密着が得られる。This is a device for observing a sample 3 by pressing an upper plate 4 against a surface plate 5. Here, the horn-shaped portion 2 hits the upper plate 4, but since the horn-shaped portion 2 is easily deformed, the force pushing up the upper plate 4 is small.
Almost uniform adhesion can be obtained over the entire area of the sample 3 without deforming or lifting the upper plate 4.

第１０図は、従来の０リングを使用して、同様の装置を
作成した場合を示す。この場合、Ｏリングの断面形状が
円形であるため、気密を得るに足る接触面圧を得るには
、０リングを大きな力で圧縮しなければならず、固定ネ
ジ８等の、大気圧以外の力を併用する必要がある。この
ため、上板４に湾曲が生じ易く、試料全域に、均一な圧
力を得ることは難しい。FIG. 10 shows a similar device made using a conventional O-ring. In this case, since the cross-sectional shape of the O-ring is circular, the O-ring must be compressed with a large force in order to obtain a contact surface pressure sufficient to obtain airtightness. It is necessary to use force together. For this reason, the upper plate 4 is likely to be curved, and it is difficult to obtain uniform pressure over the entire sample area.

以上の実施例では、とつ形部２を一ケ所のみに設けたが
、本発明は、これに限らず、第４図〜第７図に示した様
に、とつ形部２を複数設けることも当然可能である。第
４図は、とつ形部２を一方の面に二つ設けて、ガスケッ
トのネジレを生じに＜＜シて均一な当りを得る例。第５
図、第７図は、上下両方の当り面にとつ形部２を設け、
どちらの面にも確実な気密が得られる様にし、又上下の
面のとつ形部２の位置を変えて、変形をしやすくし、反
力を低減した例。第６図は、上下のとつ形部２の位置が
対向している場合に、とつ形部を側方に突出させ、変形
をしやすくし、反力を低減した例を示す。In the above embodiment, the horn-shaped portion 2 is provided at only one place, but the present invention is not limited to this, and as shown in FIGS. 4 to 7, a plurality of horn-shaped portions 2 are provided. Of course, this is also possible. FIG. 4 shows an example in which two horn-shaped portions 2 are provided on one surface to prevent twisting of the gasket and obtain uniform contact. Fifth
Figure 7 shows that a horn-shaped part 2 is provided on both the upper and lower contact surfaces,
This is an example in which a reliable airtightness is obtained on both surfaces, and the positions of the dowel-shaped portions 2 on the upper and lower surfaces are changed to facilitate deformation and reduce reaction force. FIG. 6 shows an example in which, when the positions of the upper and lower conical portions 2 are opposed to each other, the conical portions are made to protrude laterally to facilitate deformation and reduce reaction force.

又これらの実施例では、断面形、状を、とつ形部付ガス
ケット１の外周側と内周側で対称としまたが、本発明を
とくに柔らかいゴム等で作成する場合は、第８図に示し
た様に、非対称の断面形状をとり、とつ形部２が、外圧
によってたおれることのない様にすることもできる。In addition, in these embodiments, the cross-sectional shape and shape are symmetrical between the outer circumferential side and the inner circumferential side of the horn-shaped gasket 1. However, when the present invention is made of particularly soft rubber etc., As shown, it is also possible to take an asymmetrical cross-sectional shape so that the horn-shaped portion 2 does not collapse due to external pressure.

以上の実施例では、とつ形部付ガスケットの概略形状を
１円形リング状としたものを示したが、密着させる対照
物の形状によって、任意の概略形状のものを作ることが
できるのは、当然である。In the above embodiments, the general shape of the gasket with a horn-shaped part is a circular ring, but it is possible to make any general shape depending on the shape of the object to be brought into close contact with it. Of course.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、小さな外力で、気密性を確保し得、か
つ、変形量を大きくしても、パツキンが与える反力が過
大にならないパツキンが得られるので、剛性の低い物体
でも変形させることなく。According to the present invention, it is possible to obtain a packing that can ensure airtightness with a small external force and does not cause excessive reaction force even if the amount of deformation is large, so that even objects with low rigidity can be deformed. Without.

大気圧等の外圧で密着させることが出来、又ネジ止め等
を要しないので着脱が容易な構造が得られる。Since it can be brought into close contact with external pressure such as atmospheric pressure, and does not require screws or the like, a structure that is easy to attach and detach can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例の斜視図、第２図は。 その断面図、第３図はその断面部の拡大図、第４図〜第
８図は、本発明の他の実施例の断面図、第９図は、本発
明の使用例を示す断面図、第１０図は、従来の○リング
を使用した例を示す断面図である。 １・・・ガスケット、２・・・とつ形部、３・・・試料
、４・・・上板、５・・・定盤、６・・・排気ダクト、
７・・・０リング、８・・・固定ネジ。 躬 η １＆、を 図 晃／Ｉ！１ １・−とつＭ４Ｄイ寸カスケ・・ト ２−　とブ形句 第２呂 しか 葛７目 第８圓 ！ 発７Ｉ！１FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a perspective view of an embodiment of the present invention. 3 is an enlarged view of the sectional portion thereof, FIGS. 4 to 8 are sectional views of other embodiments of the present invention, and FIG. 9 is a sectional view showing an example of use of the present invention, FIG. 10 is a sectional view showing an example using a conventional circle. DESCRIPTION OF SYMBOLS 1... Gasket, 2... Triangular part, 3... Sample, 4... Top plate, 5... Surface plate, 6... Exhaust duct,
7...0 ring, 8...fixing screw.躬η 1 &, 语晃／I! 1 1.-Totsu M4D Isunkasuke...To 2- and the 2nd round of the bu-shaped phrase, the 7th eye of the kudzu, the 8th circle! Departure 7I! 1

Claims (1)

【特許請求の範囲】[Claims] １、内部を気密保持し、内部と外部の圧力差を利用して
、複数の物体を密着接触させるガスケットにおいて、ガ
スケットの物体との接触部分に、曲率の大きなとつ形部
を設けたことを特徴とするガスケット。1. In a gasket that maintains an airtight interior and uses the pressure difference between the inside and outside to bring multiple objects into close contact, the gasket is equipped with a cone-shaped part with a large curvature at the part of the gasket that comes in contact with the object. Characteristic gasket.