JPH02138575A - Compression transformed type metal seal member - Google Patents
Compression transformed type metal seal memberInfo
- Publication number
- JPH02138575A JPH02138575A JP28784588A JP28784588A JPH02138575A JP H02138575 A JPH02138575 A JP H02138575A JP 28784588 A JP28784588 A JP 28784588A JP 28784588 A JP28784588 A JP 28784588A JP H02138575 A JPH02138575 A JP H02138575A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- seal
- metal core
- core
- seal member
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 title claims abstract description 62
- 230000006835 compression Effects 0.000 title claims abstract description 7
- 238000007906 compression Methods 0.000 title claims abstract description 7
- 230000009466 transformation Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 abstract description 16
- 230000001131 transforming effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、特に高圧配管や高圧容器のシール面に形成し
た０リング溝内に挿入されたり、フランジ間に挟持され
てシール効果を発蓮する金属製のシール部材に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention is particularly applicable to O-ring grooves formed on the sealing surface of high-pressure piping or high-pressure containers, or when sandwiched between flanges to produce a sealing effect. The present invention relates to a metal seal member.
（従来の技術）
金属ワイヤコイルばねを連続巻き状態で円環体に形成し
た中央コアと、その外周を包囲する金属外皮とを備える
金属ガスケットや金属０リングはすでに広く知られてお
り、例えば特公昭５１−４６２２０号「弾性金属ガスケ
ット」に記載されている。(Prior Art) Metal gaskets and metal O-rings, which are equipped with a central core formed into a toric shape by continuously winding a metal wire coil spring and a metal outer skin surrounding the outer periphery, are already widely known. It is described in Publication No. 51-46220 "Elastic Metal Gasket".
このような金属ガスケットにおけるひずみと圧力の関係
は添付図面第６図のようになり、ひずみがある限界点Ｂ
を超えるとコイルばねが座屈を起こしてその円形断面が
破壊しシール効果が失われる、この破壊した円形断面は
荷重が除去されても再び元の形状に復帰することはない
、従って、初期ひずみを与えたシール点Ｓから座屈変形
を起こし始める点Ｋまでが使用可能範囲であり、実際に
は安全のためそれよりかなり低い範囲を使用範囲として
いる。このため、ひずみ量が限定されてシールすべき適
用範囲が狭められるという欠点があった。The relationship between strain and pressure in such a metal gasket is as shown in Figure 6 of the attached drawing.
If the coil spring exceeds the The usable range is from the sealing point S at which buckling deformation occurs to the point K at which buckling deformation begins, and in reality, the usable range is much lower than this for safety reasons. For this reason, there is a drawback that the amount of strain is limited and the range of application to be sealed is narrowed.
特公昭５７−４１６２８号「弾性金属ガスゲット」では
、コイルばねの中又は外側に補強条片を配置して、ガス
ケットを締め付けた時に一定の限度を超えてガスケット
が変形するのを防止している。従って、ひずみ量は補強
条片の厚み以下に抑えられ、ガスケッ、トの適用範囲は
おのずから限定されたものとなっている。In Japanese Patent Publication No. 57-41628 ``Elastic Metal Gas Get'', reinforcing strips are placed inside or outside the coil spring to prevent the gasket from deforming beyond a certain limit when the gasket is tightened. . Therefore, the amount of strain is suppressed to less than the thickness of the reinforcing strip, and the range of application of the gasket is naturally limited.
特開昭６０−２２７０９１号「緊密連結装置」でも、楕
円形のコイルばねの中にロックリングを挿入して継手が
つぶれるのを制限している。JP-A No. 60-227091 ``Tight Connection Device'' also restricts the joint from collapsing by inserting a lock ring into an elliptical coil spring.
（発明が解決しようとする問題点）
本発明の目的は、中央コアと金属外皮とを有する金属シ
ール部材において、広い使用範囲を確保すると共に、シ
ールの信頼性を高めることにある。(Problems to be Solved by the Invention) An object of the present invention is to ensure a wide range of use and to improve the reliability of the seal in a metal seal member having a central core and a metal outer skin.
（問題点を解決するための手段とその作用）本発明の前
述した目的は、中空で長円形の横断面を有しかつ環状で
弾性を有する金属コアと、前記金属コアの外周を包囲す
る少なくとも１枚の金属外皮とを備え、前記長円形は中
心軸線に垂直な方向の長さが中心軸線に平行な方向の長
さよりも大きくなっている長円形で、前記金属コア及び
金属外皮は、中心軸線と平行な方向に圧縮されたとき、
最初はほぼそのままの長円形断面を保ちながら収縮し上
下の被圧縮面がそれぞれ円周方向に連続する１つの円で
シールをし、ある変態点以上の圧縮力を受けると上下の
被圧縮面がそれぞれその中央付近から撓んだアーチ面を
呈するように変形し円周方向に連続する２つの同心円で
シールするようになる圧縮変態型金属シール部材によっ
て達成される。(Means for Solving the Problems and Their Effects) The above-mentioned objects of the present invention include a hollow metal core having an oval cross section, an annular elastic metal core, and at least one metal core surrounding the outer periphery of the metal core. one metal outer skin, the oval shape is an ellipse in which the length in the direction perpendicular to the central axis is larger than the length in the direction parallel to the central axis, and the metal core and the metal outer skin have a central When compressed in a direction parallel to the axis,
At first, it contracts while maintaining almost the same oval cross section, and the upper and lower compressed surfaces form a seal in one continuous circle in the circumferential direction. When a compressive force exceeding a certain transformation point is applied, the upper and lower compressed surfaces This is achieved by compression transformation type metal seal members each deformed to exhibit an arched surface bent from near the center and sealing in two concentric circles continuous in the circumferential direction.
かかる構成に基づき、本発明の金属シール部材によれば
、その特性曲線は第７図のようになる。Based on this configuration, the metal seal member of the present invention has a characteristic curve as shown in FIG.
初期ひずみを与えたシール点Ｓから変態点Ｈまでは従来
と同じように円周方向に連続する幅広の１つの円でシー
ルがなされ、変態点Ｈに来ると金属外皮の中央付近がア
ーチ状に撓んで接触点が２カ所になり、円周方向に連続
する２つの同心円でシールされるようになる。さらにひ
ずんで内部接触点Ｃに達すると、金属コアの上下が内部
で接触するようになり（第３図参照）、さらにひずんで
点Ｋに達すると座屈変形が始まるようになる。座屈点Ｂ
に達すると金属コア及び金属外皮は破壊されてシール効
果を失う。従って、本発明によるシール部材ではシール
点Ｓから座屈変形開始点Ｋまでが使用可能範囲となり、
従来よりもはるかに使用範囲が広がって適用範囲が拡大
する。加えて、２つの同心円によるシールでは二重にシ
ールがなされる結果、その信頼性が向上するという利点
が得られる。From the sealing point S, where initial strain is applied, to the transformation point H, the seal is made in one wide circle that continues in the circumferential direction, as in the past, and when the transformation point H is reached, the area near the center of the metal skin becomes arched. As it flexes, there are two contact points, and a seal is formed between two continuous concentric circles in the circumferential direction. When the metal core reaches an internal contact point C due to further strain, the top and bottom of the metal core come into contact internally (see FIG. 3), and when the metal core reaches a point K due to further strain, buckling deformation begins. Buckling point B
When this temperature is reached, the metal core and metal skin are destroyed and lose their sealing effect. Therefore, in the sealing member according to the present invention, the usable range is from the sealing point S to the buckling deformation starting point K.
The scope of use and application is much wider than before. In addition, two concentric seals have the advantage of increased reliability due to double sealing.
金属コアの上下がその内部で接触することを防止したい
時は、その内部に変形防止用の環状円板を挿入してひず
み量を制限することができる。When it is desired to prevent the upper and lower parts of the metal core from coming into contact with each other inside the metal core, an annular disk for preventing deformation can be inserted inside the metal core to limit the amount of strain.
また、金属コアの外周を包囲する金属外皮を二枚構造と
することにより、シール性、耐久性等の信頼性をさらに
向上させることもできる。Further, by forming the metal outer skin surrounding the outer periphery of the metal core into a two-layer structure, reliability such as sealing performance and durability can be further improved.
本発明の他の特徴及び利点は、添付図面の実施例を参照
した以下の記載により明らかとなろう。Other characteristics and advantages of the invention will become apparent from the following description with reference to the embodiments of the accompanying drawings.
（実施例）
第１図は、本発明による金属シール部材１０の無負荷時
の状態を横断面形状で表わしており、このシール部材１
０は、中空で長円形の横断面を有しかつ環状で弾性を存
する金属コイルばねから成る金属コア１２と、前記金属
コアの外周を包囲しかつ半径方向外側に円周方向に連続
する１本の切れ百１６を有する１枚の金属外皮１４とを
備えている。切れ目１６は、シールの適用対象によって
半径方向内側に位置させることもできる。また、金属外
皮１４は二枚重ねの構造に作ることもできる。金属コア
１２を構成するコイルばねは、連続して密着するように
巻かれて環状体を形成しており、「長円形の横断面」と
は、巻回されたばねの中心線に垂直な断面形状が長円形
に見えることを言っていることに留意されたい。(Example) FIG. 1 shows a cross-sectional shape of the metal seal member 10 according to the present invention when no load is applied.
0 includes a metal core 12 made of an annular and elastic metal coil spring that is hollow and has an oval cross section, and a metal core 12 that surrounds the outer periphery of the metal core and continues radially outward in the circumferential direction. A single metal shell 14 having 16 slits. The cut 16 can also be located radially inward depending on the application of the seal. Moreover, the metal outer skin 14 can also be made into a two-ply structure. The coil spring constituting the metal core 12 is wound continuously and tightly to form an annular body, and the "elliptical cross section" is the cross-sectional shape perpendicular to the center line of the wound spring. Note that I am saying that it looks like an oval.
この長円形は、シール部材の中心軸線２０に垂直な方向
の長さＷが中心軸線に平行な方向の長さＴよりも大きく
なっている長円形である。This ellipse is such that the length W in the direction perpendicular to the central axis 20 of the sealing member is larger than the length T in the direction parallel to the central axis.
第２図は、このシール部材１０がフランジ間に挟まれて
中心軸線と平行な方向に圧縮されている第一段の変形状
態を表わしており、金属コア１２と金属外皮１４は、中
心軸線と平行な方向に圧縮されてほぼそのままの長円形
断面を保ちながら収縮し、上下の被圧縮面はそれぞれ円
周方向に連続する幅広の１つの円１８でシール作用をし
ている。FIG. 2 shows the first deformed state in which the seal member 10 is sandwiched between flanges and compressed in a direction parallel to the central axis, and the metal core 12 and metal outer skin 14 are compressed in a direction parallel to the central axis. It is compressed in a parallel direction and contracts while maintaining an almost unchanged oval cross section, and the upper and lower compressed surfaces each form a single wide circle 18 that continues in the circumferential direction and acts as a seal.
第３図は、シール部材１０がさらに圧縮されである変態
点以上の圧縮力を受けた第二段の変形状態を表わしてお
り、上下の被圧縮面はそれぞれその中央付近から撓んだ
アーチ面３１．３２を呈するように変形し、円周方向に
連続する２つの同心円３５．３６で上下それぞれの面を
シールしている。かくして、二重のシール線が提供され
ることになり、信顧性の高いシール効果が得られる。第
３図の状態では、上下のアーチ面が内部で接触しており
、この状態は第７図の点Ｃに対応し、さらに座屈変形が
始まる点Ｋまでは圧縮力を受けても耐えることができる
から、その適用範囲はかなり広いものになる。FIG. 3 shows a second stage deformation state in which the sealing member 10 is further compressed and subjected to a compression force exceeding a certain transformation point, and the upper and lower compressed surfaces are arched surfaces bent from near the center. 31 and 32, and the upper and lower surfaces are sealed with two concentric circles 35 and 36 that are continuous in the circumferential direction. Thus, a double sealing line is provided and a reliable sealing effect is obtained. In the state shown in Figure 3, the upper and lower arch surfaces are in contact with each other internally, and this state corresponds to point C in Figure 7, and can withstand compressive force up to point K, where buckling deformation begins. Therefore, its scope of application is quite wide.
第４図は、金属コアと金属外皮の長円形をさらに偏平化
した実施例を表わしており、半径方向の両端部４１．４
２で座屈破壊が起こりやすくなるのを防止するため、中
心軸線と垂直な平面内を延伸する環状の平板４５を内部
に挿入している。平板４５の端部は、金属コアを構成す
るコイルばねの端部を結合する前に溶接して連結しても
良いし、重ねたままにしておいても良い。この実施例で
は、ある変態点以上の圧縮力を受けると、第５図に示す
ような変形状態になり、第３図の場合と同様に上下の被
圧縮面はそれぞれその中央付近から撓んだアーチ面５１
．５２を呈するように変形するが、平板４５があるため
そのひずみ量はある程度制限され、両端部４１．４２で
の座屈変形が防止される。第５図の状態でも円周方向に
連続する２つの同心円５５．５６で上下それぞれの面が
シールされることになり、二重のシール線に基づく信転
性の高いシール効果が得られる。FIG. 4 shows an embodiment in which the metal core and the metal outer shell are further flattened, and both radial ends 41.4
2, an annular flat plate 45 extending in a plane perpendicular to the central axis is inserted inside. The ends of the flat plates 45 may be connected by welding before joining the ends of the coil springs constituting the metal core, or may be left overlapped. In this example, when a compressive force exceeding a certain transformation point is applied, the deformation state shown in Fig. 5 occurs, and the upper and lower compressed surfaces are bent from their respective centers as in the case of Fig. 3. Arch surface 51
．． 52, but the presence of the flat plate 45 limits the amount of strain to some extent and prevents buckling deformation at both ends 41 and 42. Even in the state shown in FIG. 5, the upper and lower surfaces are sealed by two concentric circles 55 and 56 continuous in the circumferential direction, and a highly reliable sealing effect based on the double seal line can be obtained.
（発明の効果）
以上詳細に説明した如く、本発明の金属シール部材によ
れば、中央コアと金属外皮とを有する高圧配管や高圧容
器用のシールにおいて、広い使用範囲が確保されると共
に、シールの信幀性が高められ、装置やシステム全体の
安全性が向上する等、その技術的効果には極めて顕著な
ものがある。(Effects of the Invention) As described above in detail, the metal seal member of the present invention can be used in a wide range of applications for high-pressure piping and high-pressure vessels having a central core and a metal outer skin, and can also be used as a seal. Its technical effects are extremely remarkable, such as increasing the reliability of equipment and improving the safety of devices and systems as a whole.
【図面の簡単な説明】
第１図は本発明の好適な実施例による金属シール部材を
中心軸線を含む平面で切断した横断面図、第２図はシー
ル部材がフランジ間で第一段の圧縮変形を受けている状
態を表わす横断面図、第３図はシール部材がフランジ間
で第二段の圧縮変形を受けている状態を表わす横断面図
、第４図は他の実施例によるシール部材の第一段圧縮状
態を表わす横断面図、第５図は第二段圧縮状態を表わす
横断面図、第６図は従来の金属ガスケットの圧力とひず
みとの関係を表わすグラフ、第７図は本発明によるシー
ル部材の圧力とひずみとの関係を表わすグラフである。
１０・・・シール部材 １２・・・金属コア１４・
・・金属外皮 １６・・・切れ目１８・・・円
２ｏ・・・中心軸線３１．３２・・・アー
チ面[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a cross-sectional view of a metal seal member according to a preferred embodiment of the present invention taken along a plane including the central axis, and FIG. FIG. 3 is a cross-sectional view showing a state in which the seal member is undergoing deformation; FIG. 3 is a cross-sectional view showing a state in which the seal member is undergoing second-stage compressive deformation between the flanges; FIG. 4 is a seal member according to another embodiment. Fig. 5 is a cross-sectional view showing the first stage compression state, Fig. 6 is a graph showing the relationship between pressure and strain of a conventional metal gasket, and Fig. 7 is a cross-sectional view showing the second stage compression state. It is a graph showing the relationship between pressure and strain of the seal member according to the present invention. 10... Seal member 12... Metal core 14.
...Metal shell 16...Cut 18...Yen
2o... Central axis line 31.32... Arch surface
Claims (1)
る金属コアと、 前記金属コアの外周を包囲する少なくとも１枚の金属外
皮とを備え、 前記長円形は中心軸線に垂直な方向の長さが中心軸線に
平行な方向の長さよりも大きくなっている長円形で、 前記金属コア及び金属外皮は、中心軸線と平行な方向に
圧縮されたとき、最初はほぼそのままの長円形断面を保
ちながら収縮し上下の被圧縮面がそれぞれ円周方向に連
続する１つの円でシールをし、ある変態点以上の圧縮力
を受けると上下の被圧縮面がそれぞれその中央付近から
撓んだアーチ面を呈するように変形し円周方向に連続す
る２つの同心円でシールするようになることを特徴とす
る圧縮変態型金属シール部材。 ２、前記金属コアの内部に前記中心線に垂直な平面内を
延伸する環状の円板が配置されている請求項１記載の金
属シール部材。[Claims] 1. A metal core that is hollow and has an oval cross section and is annular and elastic; and at least one metal skin surrounding the outer periphery of the metal core, the oval being an ellipse whose length in the direction perpendicular to the central axis is greater than the length in the direction parallel to the central axis, and when the metal core and the metal skin are compressed in the direction parallel to the central axis, they initially It contracts while maintaining almost the same oval cross section, and the upper and lower compressed surfaces form a seal in a continuous circle in the circumferential direction, and when subjected to a compressive force above a certain transformation point, the upper and lower compressed surfaces each form a seal. A compression transformation type metal seal member characterized in that it deforms to exhibit an arched surface bent from near the center and seals with two concentric circles continuous in the circumferential direction. 2. The metal seal member according to claim 1, wherein an annular disk extending in a plane perpendicular to the center line is disposed inside the metal core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63287845A JP2811186B2 (en) | 1988-11-16 | 1988-11-16 | Compression transformation type metal seal member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63287845A JP2811186B2 (en) | 1988-11-16 | 1988-11-16 | Compression transformation type metal seal member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02138575A true JPH02138575A (en) | 1990-05-28 |
| JP2811186B2 JP2811186B2 (en) | 1998-10-15 |
Family
ID=17722522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63287845A Expired - Fee Related JP2811186B2 (en) | 1988-11-16 | 1988-11-16 | Compression transformation type metal seal member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2811186B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5797604A (en) * | 1995-12-25 | 1998-08-25 | Ckd Corporation | Metal gasket |
| WO2004088181A1 (en) | 2003-03-31 | 2004-10-14 | Nichias Corporation | Ring-shaped metal gasket |
| JP2006017074A (en) * | 2004-07-05 | 2006-01-19 | Eagle Engineering Aerospace Co Ltd | Seal device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177294A (en) * | 2017-12-27 | 2018-06-19 | 江苏远洋车灯有限公司 | A kind of car light sealing filler strip and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4829952A (en) * | 1971-08-24 | 1973-04-20 | ||
| JPS52148863U (en) * | 1976-05-10 | 1977-11-11 |
-
1988
- 1988-11-16 JP JP63287845A patent/JP2811186B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4829952A (en) * | 1971-08-24 | 1973-04-20 | ||
| JPS52148863U (en) * | 1976-05-10 | 1977-11-11 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5797604A (en) * | 1995-12-25 | 1998-08-25 | Ckd Corporation | Metal gasket |
| WO2004088181A1 (en) | 2003-03-31 | 2004-10-14 | Nichias Corporation | Ring-shaped metal gasket |
| JP2006017074A (en) * | 2004-07-05 | 2006-01-19 | Eagle Engineering Aerospace Co Ltd | Seal device |
| JP4610949B2 (en) * | 2004-07-05 | 2011-01-12 | イーグル・エンジニアリング・エアロスペース株式会社 | Sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2811186B2 (en) | 1998-10-15 |
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