JPH0413475Y2 - - Google Patents
Info
- Publication number
- JPH0413475Y2 JPH0413475Y2 JP1987012839U JP1283987U JPH0413475Y2 JP H0413475 Y2 JPH0413475 Y2 JP H0413475Y2 JP 1987012839 U JP1987012839 U JP 1987012839U JP 1283987 U JP1283987 U JP 1283987U JP H0413475 Y2 JPH0413475 Y2 JP H0413475Y2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- ultra
- shaped
- heat
- film
- 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
- -1 polytetrafluoroethylene Polymers 0.000 claims description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 229920006257 Heat-shrinkable film Polymers 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- RRZIJNVZMJUGTK-UHFFFAOYSA-N 1,1,2-trifluoro-2-(1,2,2-trifluoroethenoxy)ethene Chemical compound FC(F)=C(F)OC(F)=C(F)F RRZIJNVZMJUGTK-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920006300 shrink film Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Description
【考案の詳細な説明】
「考案の目的」
本考案は超低温用Ｏリングに係り、シール材と
して好ましい表面硬さないし気密性を具備し、し
かも有効な弾力性を以てシールすると共に割れや
折れなどを発生することのないＯリング材を提供
しようとするものでる。[Detailed description of the invention] "Purpose of the invention" The present invention relates to an O-ring for ultra-low temperature use, which has a surface hardness and airtightness suitable for a sealing material, seals with effective elasticity, and prevents cracking and bending. The aim is to provide an O-ring material that will not cause this.
（産業上の利用分野）
各種機器ないし設備の超低温接続部などにおけ
るリング状シール材。(Industrial application field) Ring-shaped sealing material for ultra-low temperature connections of various devices and equipment.
（従来の技術）
各種機器ないし装置において−50℃以下のよう
な低温ないし超低温環境の導管その他の接手部に
おいてリング状をなしたＯリングをシール材とし
て使用されることが多く、斯うした場合のＯリン
グとしてはシリコンゴムやフツ素ゴム等のリング
材やポリテトラフルオロエチレンの密実組織体を
削り出してリング状としたものが採用されてい
る。(Prior art) Ring-shaped O-rings are often used as sealing materials in conduits and other joints in low-temperature or ultra-low-temperature environments, such as -50°C or lower, in various devices and devices. As the O-ring, a ring-shaped ring material made of silicone rubber, fluorocarbon rubber, or a dense structure of polytetrafluoroethylene is used.
（考案が解決しようとする問題点）
上記したシリコンゴムは−60℃程度まで、フツ
素ゴムは−40℃程度までしか使用できず、それ以
下の超低温環境においては安定したシール性が求
め難くなり、緊圧力を増大しあるいは衝撃作用の
存在するような利用条件下においては割れや折れ
などが発生することとなる。(Problem that the invention aims to solve) The silicone rubber mentioned above can only be used up to about -60℃, and the fluoro rubber can only be used up to about -40℃, and it becomes difficult to obtain stable sealing properties in ultra-low temperature environments below that. Under usage conditions such as increased tension or impact, cracks, breaks, etc. may occur.
ポリテトラフルオロエチレンの削り出し材はそ
の工数が大であり、しかも特に前記したような超
低温環境では硬化し弾力性が全くなくなるので強
く押圧して接合シールさせないと洩れを発生し、
又このために前記削り出しによる得られる製品の
寸法精度が強度に要求され、このために更にコス
トアツプとなる。 Cutting polytetrafluoroethylene requires a large amount of man-hours, and it hardens and loses its elasticity, especially in the ultra-low temperature environment mentioned above, so it will leak if it is not strongly pressed to seal the joint.
Moreover, for this reason, the product obtained by the cutting process is required to have high dimensional accuracy, which further increases the cost.
「考案の構成」
（問題点を解決するための手段）
ロツド状のポリテトラフルオロエチレン多孔質
リング状体に熱収縮性弗素樹脂フイルムを覆着し
たことを特徴とする超低温用Ｏリング。"Structure of the invention" (Means for solving the problems) An ultra-low temperature O-ring characterized in that a rod-shaped polytetrafluoroethylene porous ring-shaped body is covered with a heat-shrinkable fluororesin film.
（作用）
ロツド状ポリテトラフルオロエチレン多孔質体
は−60℃以下のような超低温環境においてもその
多孔質組織に適切な弾力性を維持し、又成形工程
において断面円形などの整然たる断面構造として
的確に製造することができる。(Function) The rod-shaped polytetrafluoroethylene porous body maintains appropriate elasticity in its porous structure even in ultra-low temperature environments such as -60℃ or below, and can be formed into a well-ordered cross-sectional structure such as a circular cross-section during the molding process. Can be manufactured accurately.
前記ロツド状多孔質体の表面に熱収縮性樹脂フ
イルムを覆着することにより表面に適当な硬さと
気密性を形成し又多孔質体表面における弾性作用
を強化すると共に均一化する。即ち部分的に加圧
されても形状変化が少く、又部分的加圧による変
形を受けても復元性に優れたものとなる。 By covering the surface of the rod-shaped porous body with a heat-shrinkable resin film, appropriate hardness and airtightness are formed on the surface, and elastic action on the surface of the porous body is strengthened and made uniform. In other words, even if it is partially pressurized, there is little change in shape, and even if it is deformed by partially pressurized, it has excellent restorability.
（実施例）
上記したような本発明によるものの具体的な実
施態様を添付図面に示すものについて説明する
と、ポリテトラフルオロエチレンのロツド状多孔
質体１の周面に熱収縮性樹脂フイルム２を覆着し
てリング状に形成する。(Example) A specific embodiment of the present invention as described above will be described as shown in the attached drawings. and form it into a ring shape.
前記したポリテトラフルオロエチレンのロツド
状多孔質体は、ポリテトラフルオロエチレンを所
定の温度条件ないし圧延ないし延伸条件で処理す
ることにより、気孔率が５〜60％程度の空〓をも
つたロツド状材として簡易に得られ、このもを目
的とするＯリングの寸法に即応した長さに切断
し、この切断に際して好ましくは両端に第３図に
示すように適当なテーパ３を附し、それらのテー
パ面を重合してリング状とする。なお上記のよう
に切断されたロツド状体に対し熱収縮フイルム２
を覆着し、前記のようにテーパ面を重合した部分
に対してもフイルム２を被覆して接合する。具体
的に製品化するには前記のようにフイルム２の覆
着されたものをリング状の成形金型に入れ例えば
320〜380℃で５〜30分のような加熱加圧条件下の
成形をなすことにより多孔質ポリテトラフルオロ
エチレンの焼成接着と熱収縮フイルム２の収縮な
いし融着を図り、両部体１，２が有効に一体化さ
れた製品として仕上げられる。 The rod-shaped porous body of polytetrafluoroethylene described above is produced by treating polytetrafluoroethylene under predetermined temperature conditions, rolling conditions, or stretching conditions. It is easily obtained as a material, and is cut into a length that corresponds to the dimensions of the target O-ring. When cutting, it is preferable to add an appropriate taper 3 to both ends as shown in Fig. The tapered surfaces are polymerized to form a ring shape. In addition, heat shrink film 2 is applied to the rod-shaped body cut as described above.
The film 2 is also covered and bonded to the portion where the tapered surfaces are overlapped as described above. To specifically produce a product, the film 2 covered as described above is placed in a ring-shaped mold, for example.
By performing molding under heat and pressure conditions at 320 to 380°C for 5 to 30 minutes, the porous polytetrafluoroethylene is baked and bonded, and the heat shrinkable film 2 is contracted or fused. 2 are effectively integrated into a finished product.
前記熱収縮フイルム２としてはPFA（パーフル
オロビニルエーテルと四弗化エチレンとの共重合
体）またはFER（四弗化エチレンと六弗化エチレ
ンとの共重合体）などが採用され、このものはチ
ユーブ状とされたものを、ロツド状の前記多孔質
体１に覆着させる。場合によつてはテーパ状とさ
れた前記フイルム２を第２図に示すようにスパイ
ラル状に捲着してよい。何れにしても前記したよ
うな加熱融着で多孔質体１の周面に的確に一体化
した製品として仕上げられる。 The heat-shrinkable film 2 is made of PFA (a copolymer of perfluorovinyl ether and tetrafluoroethylene) or FER (a copolymer of tetrafluoroethylene and hexafluoroethylene). The rod-shaped porous body 1 is covered with the rod-shaped porous body 1. In some cases, the tapered film 2 may be wound in a spiral shape as shown in FIG. In any case, the finished product is precisely integrated with the peripheral surface of the porous body 1 by heat fusion as described above.
前記したポリテトラフルオロエチレンは−260
℃程度まで充分に耐える特性を有し、このものの
多孔質体により所要の弾力性を得しめ、しかもこ
れを前記フイルム２で覆着し、該周面の一部に押
圧変形を受けた場合にフイルム２層を介して作用
力が多孔質体１の周辺部分にの伝播されるように
構成されるので、弾力復元作用の強化、均一化を
適切にもたらし得る。即ち近時における電子工
業、電気ないし化学工業、機械工業などにおいて
宇宙におけると同様に超低温環境における特性解
明ないし実用化が次第に普及化されつつあり、斯
様な条件下で前記のような特性をもつた本考案は
広く利用され、優れた性能を発揮し得る。 The polytetrafluoroethylene mentioned above is −260
It has the property of being able to withstand temperatures of about Since the structure is such that the acting force is propagated to the peripheral portion of the porous body 1 through the two film layers, the elastic restoring action can be appropriately strengthened and made uniform. That is, in recent years, in the electronics industry, electrical industry, chemical industry, mechanical industry, etc., it has become increasingly common to investigate and put into practical use the characteristics in ultra-low temperature environments, similar to those in space. The present invention can be widely used and exhibit excellent performance.
「考案の効果」
以上説明したような本考案によるときは超低温
環境において卓越したシール作用を発揮し且つ耐
用性の高いＯリングを提供し得るものであつて、
工業的にその効果の大きい考案である。"Effects of the Invention" The present invention as explained above can provide an O-ring that exhibits excellent sealing action in ultra-low temperature environments and has high durability.
This is a highly effective idea industrially.
図面は本考案の技術的内容を示すものであつ
て、第１図は本考案によるものの１例を示した部
分切欠斜面図、第２図はその別の実施例について
の第１図と同様な部分切欠斜面図、第３図はその
ロツド状ポリテトラフルオロエチレン多孔質体を
リング状化するための切断状態を示した側面図で
ある。
然してこれらの図面において、１はロツド状ポ
リテトラフルオロエチレン多孔質体、２は熱収縮
性合成樹脂フイルムを示すものである。
The drawings show the technical contents of the present invention, and Fig. 1 is a partially cutaway slope view showing one example of the invention, and Fig. 2 is a diagram similar to Fig. 1 of another embodiment. FIG. 3 is a side view showing a state in which the rod-shaped polytetrafluoroethylene porous body is cut into a ring shape. In these drawings, numeral 1 represents a rod-shaped polytetrafluoroethylene porous body, and numeral 2 represents a heat-shrinkable synthetic resin film.
Claims (1)
質体に気密性且つ熱収縮性弗素樹脂フイルムを
覆着し、Ｏリング状体に形成したことを特徴と
する超低温用Ｏリング。 (2) 気密性且つ熱収縮性弗素樹脂フイルムがチユ
ーブであることを特徴とする実用新案登録請求
の範囲第１項に記載の超低温用Ｏリング。 (3) 気密性且つ熱収縮性弗素樹脂フイルムがテー
プ状フイルムをラツピングして形成されること
を特徴とする実用新案登録請求の範囲第１項に
記載の超低温用Ｏリング。[Claims for Utility Model Registration] (1) Ultra-low-temperature product characterized by covering a rod-shaped polytetrafluoroethylene porous body with an airtight heat-shrinkable fluororesin film to form an O-ring-shaped body. O-ring. (2) The ultra-low-temperature O-ring according to claim 1, wherein the airtight and heat-shrinkable fluororesin film is a tube. (3) The ultra-low-temperature O-ring according to claim 1, which is characterized in that the airtight heat-shrinkable fluororesin film is formed by wrapping a tape-like film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987012839U JPH0413475Y2 (en) | 1987-02-02 | 1987-02-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987012839U JPH0413475Y2 (en) | 1987-02-02 | 1987-02-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63121864U JPS63121864U (en) | 1988-08-08 |
| JPH0413475Y2 true JPH0413475Y2 (en) | 1992-03-30 |
Family
ID=30801343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987012839U Expired JPH0413475Y2 (en) | 1987-02-02 | 1987-02-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0413475Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011130590A (en) * | 2009-12-17 | 2011-06-30 | Sumitomo Heavy Ind Ltd | Gear motor for freezer |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6485809B1 (en) * | 1999-08-11 | 2002-11-26 | W. L. Gore & Associates Gmbh | Low stress to seal gasket |
| JP2008291989A (en) * | 2007-04-27 | 2008-12-04 | Japan Matekkusu Kk | Gasket |
| JP2009144847A (en) * | 2007-12-14 | 2009-07-02 | Nhk Spring Co Ltd | Ring-shaped sealing material and its manufacturing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0215635Y2 (en) * | 1984-11-02 | 1990-04-26 |
-
1987
- 1987-02-02 JP JP1987012839U patent/JPH0413475Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011130590A (en) * | 2009-12-17 | 2011-06-30 | Sumitomo Heavy Ind Ltd | Gear motor for freezer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63121864U (en) | 1988-08-08 |
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