JP2597285Y2 - C type seal - Google Patents
C type sealInfo
- Publication number
- JP2597285Y2 JP2597285Y2 JP1991021245U JP2124591U JP2597285Y2 JP 2597285 Y2 JP2597285 Y2 JP 2597285Y2 JP 1991021245 U JP1991021245 U JP 1991021245U JP 2124591 U JP2124591 U JP 2124591U JP 2597285 Y2 JP2597285 Y2 JP 2597285Y2
- Authority
- JP
- Japan
- Prior art keywords
- bent portion
- bent
- opening groove
- seal
- bending
- 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 - Lifetime
Links
Landscapes
- Gasket Seals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、平面形状が多角形をな
して延び、対向する二部材間に圧縮状態に介在して密封
を行なう断面Ｃ字形の金属シールに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal seal having a C-shaped cross section which extends in a polygonal plane and seals between two opposing members in a compressed state.
【０００２】[0002]
【従来の技術】従来から、図３及び図４に示すように、
各頂点となる屈曲部２がアール状である略多角形（図で
は略正方形）リング状の平面形状をなすとともに、屈曲
方向内側に連続した開口溝４が周設された断面Ｃ字形に
なり、例えば圧力容器６を構成する対向する二部材のフ
ランジ７，８間に形成された溝部９内に介装され、前記
両フランジ７，８に適宜圧縮されるとともに、前記開口
溝４を通じて中空部５に導入される流体圧力を利用した
セルフシール作用によって密封を行なう金属製のＣ形シ
ール１が知られている。2. Description of the Related Art Conventionally, as shown in FIGS.
Each of the bent portions 2 serving as vertices has an R-shaped substantially polygonal (substantially square in the figure) ring-shaped planar shape, and has a C-shaped cross section in which an open groove 4 continuous inward in the bending direction is provided. For example, it is interposed in a groove 9 formed between two opposed flanges 7, 8 constituting the pressure vessel 6, is appropriately compressed by the two flanges 7, 8, and is hollowed through the opening groove 4. There is known a metal C-shaped seal 1 which performs sealing by a self-sealing action utilizing a fluid pressure introduced into a seal.
【０００３】[0003]
【考案が解決しようとする課題】しかしながら、上記従
来構造によると、屈曲部２は、当該シール１の製造時の
屈曲成形過程で大きな残留応力が生じることに起因し
て、図４に示す装着状態での両フランジ７，８からの圧
縮に対する弾性係数が大きく、それに比較して、多角形
の各辺に相当する部分である非屈曲部３の弾性係数が極
端に小さいため、非屈曲部３に適切な締め代を付与する
ためには屈曲部２に対する両フランジ７，８の締め付け
力を大きくする必要があり、またフランジ７，８との圧
接力が非屈曲部３よりも屈曲部２で著しく大きくなるこ
とから、フランジ７，８の対向面に不均一な歪が発生し
て密封性に悪影響を及ぼしていた。However, according to the above-mentioned conventional structure, the bent portion 2 has a large residual stress in the bending process during the manufacture of the seal 1, and the bent portion 2 is in the mounted state shown in FIG. The elastic modulus of the non-bent portion 3 which is a portion corresponding to each side of the polygon is extremely small. In order to provide an appropriate interference, it is necessary to increase the tightening force of the flanges 7 and 8 against the bent portion 2, and the pressing force with the flanges 7 and 8 is more remarkable at the bent portion 2 than at the non-bent portion 3. As a result, uneven distortion is generated on the facing surfaces of the flanges 7 and 8, which adversely affects the sealing performance.
【０００４】そこで本考案は、上記した問題に鑑み、各
屈曲部における圧縮に対する弾性係数を低下させるとと
もに、密封性を安定させることを課題としてなされたも
のである。[0004] In view of the above-mentioned problems, the present invention has been made to reduce the elastic coefficient of each bent portion against compression and to stabilize the sealing performance.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するた
め、本考案のＣ形シールは、平面形状が略多角形リング
状をなし屈曲方向に対して内向き又は外向きの連続した
開口溝が周設された断面略Ｃ字形の金属シールにおい
て、前記開口溝の両側で互いに対向する縁部が、被密封
部材との圧接部側へ、非屈曲部との対応部分よりも屈曲
部との対応部分で大きく後退した構成としたものであ
る。In order to solve the above-mentioned problems, the C-shaped seal of the present invention has a substantially polygonal ring shape in plan view and has a continuous opening groove inward or outward with respect to the bending direction. In a peripheral metal seal having a substantially C-shaped cross section, edges facing each other on both sides of the opening groove are sealed.
This is a configuration in which the portion corresponding to the bent portion is retreated farther to the press contact portion side with the member than the portion corresponding to the non-bent portion.
【０００６】[0006]
【作用】先に述べたとおり、Ｃ形シールはその製造時に
略多角形リング状に屈曲成形する過程で、屈曲部に成形
による大きな残留応力が生じ、これが屈曲部の弾性係数
の上昇を来しているものであるが、上記構成によると、
開口溝の両側で互いに対向する縁部を、被密封部材との
圧接部側へ、非屈曲部との対応部分よりも屈曲部との対
応部分で大きく後退させたことから、前記屈曲成形によ
る残留応力が減少され、これによって屈曲部の弾性係数
が低下し、非屈曲部の弾性係数との差を緩和させること
ができる。As described above, in the process of manufacturing a C-shaped seal by bending it into a substantially polygonal ring at the time of manufacturing, a large residual stress is generated at the bent portion due to the molding, which causes an increase in the elastic modulus of the bent portion. According to the above configuration,
The edges facing each other on both sides of the opening groove are retreated farther to the press contact portion with the sealed member , at the portion corresponding to the bent portion than at the portion corresponding to the non-bent portion. The stress is reduced, whereby the elastic modulus of the bent portion is reduced, and the difference from the elastic modulus of the non-bent portion can be reduced.
【０００７】[0007]
【実施例】次に、本考案のＣ形シールを図１及び図２に
示す一実施例を参照しながら説明すると、この金属製の
Ｃ形シール１１は、平面形状が略正方形をなして延びる
ものであって、屈曲方向内側に周設された連続した開口
溝１４の溝幅は、アール状の各屈曲部１２の位置１４ａ
で大きくなっており、すなわち開口溝１４の両側で互い
に対向する縁部１５，１６は、圧力容器のフランジ等の
被密封部材との圧接部１７，１８側へ、非屈曲部１３と
の対応部分１５ｂ，１６ｂよりも屈曲部１２との対応部
分１５ａ，１６ａが大きく後退している。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the C-shaped seal of the present invention will be described with reference to one embodiment shown in FIGS. 1 and 2. The metal C-shaped seal 11 extends in a substantially square planar shape. The groove width of the continuous opening groove 14 provided on the inner side in the bending direction is the same as the position 14a of each of the rounded bent portions 12.
In other words, edges 15 and 16 facing each other on both sides of the opening groove 14 are formed by flanges of the pressure vessel or the like.
The corresponding portions 15a, 16a with the bent portion 12 are retreated farther to the press contact portions 17, 18 with the sealed member than the corresponding portions 15b, 16b with the non-bent portion 13.
【０００８】このため、上記Ｃ形シール１１によると、
縁部１５，１６が屈曲部１２との対応部分１５ａ，１６
ａで大きく後退し、図２に破線で示す部分１５ｃ，１６
ｃが除去された形状をなすことから、屈曲部１２の屈曲
成形時にこの破線で示す部分１５ｃ，１６ｃに生じた残
留応力も除去される。したがってこの残留応力の減少分
だけ屈曲部１２における弾性係数が低下し、屈曲部１２
と非屈曲部１３の弾性係数を近似させることができる。For this reason, according to the C-shaped seal 11,
The edges 15, 16 correspond to the bent portions 12 at the portions 15a, 16
2a, the portions 15c and 16 shown in FIG.
Since c is removed, the residual stress generated in the portions 15c and 16c shown by the broken lines during the bending of the bent portion 12 is also removed. Therefore, the elastic coefficient at the bent portion 12 is reduced by the reduced amount of the residual stress.
And the elastic modulus of the non-bent portion 13 can be approximated.
【０００９】ここで、当該シールの密封機能は被密封部
材との圧接部１７，１８において営まれることから、前
記縁部１５，１６の屈曲部１２との対応部分１５ａ，１
６ａが前記圧接部１７，１８を超えて後退させるもので
はないことは勿論である。Here, the sealing function of the seal is a function of the sealed portion.
The parts 15a, 1 corresponding to the bent parts 12 of the edges 15, 16 are operated at the press contact parts 17, 18 with the material.
Needless to say, 6a does not retreat beyond the press contact portions 17, 18.
【００１０】なお、図示の実施例は、平面形状が略正方
形であって内圧用のものについて本考案を適用したが、
略長方形など他の多角形状をなすものについても、ま
た、開口溝１４が屈曲部１２の屈曲方向に対して外側に
周設された外圧用のものについても、同様に構成するこ
とができることは勿論である。In the embodiment shown in the drawings, the present invention is applied to an internal pressure type having a substantially square planar shape.
It is needless to say that the present invention can be similarly applied to a device having another polygonal shape such as a substantially rectangular shape, and a device for external pressure in which the opening groove 14 is provided on the outside in the bending direction of the bending portion 12. It is.
【００１１】また、前記屈曲部１２との対応部分１５
ａ，１６ａの後退量や後退させる範囲（辺方向への長
さ）は、屈曲部１２の数によって異なる屈曲角度や曲率
等による残留応力の大きさを考慮して適宜に設定され、
これによって屈曲部１２の弾性係数を非屈曲部１３の弾
性係数と近似させることができる。Also, a portion 15 corresponding to the bent portion 12
The amount of retreat and the range of retreat (length in the side direction) of a and 16a are appropriately set in consideration of the magnitude of residual stress due to a bending angle, curvature, or the like that varies depending on the number of the bending portions 12, and
Thereby, the elastic coefficient of the bent portion 12 can be approximated to the elastic coefficient of the non-bent portion 13.
【００１２】[0012]
【考案の効果】以上、本考案によると、開口溝の両側で
互いに対向する縁部を、非屈曲部との対応部分よりも屈
曲部との対応部分で被密封部材との圧接部側へ大きく後
退させ、屈曲成形による残留応力を除去したことによっ
て、圧縮に対する各屈曲部の弾性係数が低下するので、
締め代を付与するための被密封部材の締め付け力を軽減
することが可能になるとともに、屈曲部と非屈曲部の弾
性係数の差が緩和されて被密封部材の接触面の不均一な
歪を防止することができ、優れた密封性を発揮するもの
である。As described above, according to the present invention, the edges facing each other on both sides of the opening groove are larger toward the pressure contact portion with the sealed member at the corresponding portion with the bent portion than at the corresponding portion with the non-bent portion. By retreating and removing the residual stress due to bending, the elastic modulus of each bending part against compression decreases,
It is possible to reduce the tightening force of the sealed member for providing the interference , and the difference in the elastic modulus between the bent portion and the non-bent portion is reduced, thereby reducing the uneven distortion of the contact surface of the sealed member. It can be prevented and exhibits excellent sealing properties.
【図１】本考案の一実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.
【図２】同じく屈曲部を切断した要部断面図である。FIG. 2 is a cross-sectional view of a main part in which a bent portion is similarly cut.
【図３】従来構造の一例を示す斜視図である。FIG. 3 is a perspective view showing an example of a conventional structure.
【図４】同じく装着状態の要部断面図である。FIG. 4 is a cross-sectional view of a main part in the mounted state.
１１ Ｃ形シール １２ 屈曲部 １３ 非屈曲部 １４ 開口溝 １５，１６ 縁部 １５ａ，１６ａ 屈曲部との対応部分 １５ｂ，１６ｂ 非屈曲部との対応部分 １７，１８圧接部 DESCRIPTION OF SYMBOLS 11 C-shaped seal 12 Bent part 13 Non-bent part 14 Opening groove 15, 16 Edge part 15a, 16a Part corresponding to a bent part 15b, 16b Part corresponding to a non-bent part 17, 18 Pressure contact part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F16J 15/06 F16J 15/08 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) F16J 15/06 F16J 15/08
Claims (1)
方向に対して内向き又は外向きの連続した開口溝が周設
された断面略Ｃ字形の金属シールにおいて、前記開口溝
の両側で互いに対向する縁部が、被密封部材との圧接部
側へ、非屈曲部との対応部分よりも屈曲部との対応部分
で大きく後退していることを特徴とするＣ形シール。1. A metal seal having a substantially C-shaped cross section having a substantially polygonal ring shape in plan view and having a continuous opening groove inward or outward with respect to a bending direction, and having a substantially C-shaped cross section on both sides of the opening groove. A C-shaped seal, wherein edges facing each other are retreated to a side closer to a pressure contact portion with a member to be sealed , at a portion corresponding to a bent portion than at a portion corresponding to a non-bent portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991021245U JP2597285Y2 (en) | 1991-03-12 | 1991-03-12 | C type seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991021245U JP2597285Y2 (en) | 1991-03-12 | 1991-03-12 | C type seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04110264U JPH04110264U (en) | 1992-09-24 |
| JP2597285Y2 true JP2597285Y2 (en) | 1999-07-05 |
Family
ID=31907041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991021245U Expired - Lifetime JP2597285Y2 (en) | 1991-03-12 | 1991-03-12 | C type seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2597285Y2 (en) |
-
1991
- 1991-03-12 JP JP1991021245U patent/JP2597285Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04110264U (en) | 1992-09-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990309 |
|
| EXPY | Cancellation because of completion of term |