JPH0536669B2 - - Google Patents
Info
- Publication number
- JPH0536669B2 JPH0536669B2 JP58053187A JP5318783A JPH0536669B2 JP H0536669 B2 JPH0536669 B2 JP H0536669B2 JP 58053187 A JP58053187 A JP 58053187A JP 5318783 A JP5318783 A JP 5318783A JP H0536669 B2 JPH0536669 B2 JP H0536669B2
- Authority
- JP
- Japan
- Prior art keywords
- seal
- seal groove
- lip
- inclined surface
- seal body
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Description
【発明の詳細な説明】
この発明は、バツクアツプを不要にしたシール
機構に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing mechanism that eliminates the need for backup.
（従来のシール機構）
この種のシール機構として、第１図に示すもの
が、従来から知られている。(Conventional Sealing Mechanism) As this type of sealing mechanism, the one shown in FIG. 1 is conventionally known.
この従来のシール本体Ａは、その断面形状をほ
ぼＵ字状にするとともに、その一方のリツプ部１
の長さを、他方のリツプ部２よりも、短くしてい
る。 This conventional seal body A has a substantially U-shaped cross section, and has one lip portion 1.
The length of the lip part 2 is made shorter than that of the other lip part 2.
また、上記シール本体Ａを組込むシール溝Ｂ
は、圧力の作用方向後方の側面に、傾斜面３を形
成している。そして、図面からも明らかなよう
に、この傾斜面３は、シール溝Ｂが、その深さ方
向に向つて、徐々に拡開する方向に傾斜させてい
る。 In addition, a seal groove B into which the seal body A is installed is also provided.
Forms an inclined surface 3 on the rear side surface in the direction of pressure action. As is clear from the drawings, the inclined surface 3 is inclined in a direction in which the seal groove B gradually widens in the depth direction thereof.
このようにしたシール溝Ｂに上記シール本体Ａ
をくみ込むが、上記短くしたリツプ部１を、シー
ル面側に位置させ、長いリツプ部２を、シール溝
Ｂの底に接触させている。 The above seal body A is inserted into the seal groove B thus formed.
The short lip part 1 is positioned on the sealing surface side, and the long lip part 2 is brought into contact with the bottom of the seal groove B.
しかして、シール本体Ａを、上記のように、シ
ール溝Ｂに組込んだ状態で、当該シール本体Ａに
圧力が作用すると、上記シール本体Ａは、傾斜面
３に沿つて、シール溝Ｂ内に押し込められる。 Therefore, when pressure is applied to the seal body A with the seal body A assembled in the seal groove B as described above, the seal body A moves along the inclined surface 3 into the seal groove B. be pushed into.
しかし、この従来のシール機構では、リツプ部
１を当該シール溝Ｂの開口縁とほぼ同一レベルに
しているので、シール本体Ａが上記のように傾斜
面３に沿つて押し込められたとき、当該シール本
体Ａの一部が傾斜面３の上端からはみ出してしま
う。 However, in this conventional sealing mechanism, since the lip portion 1 is at almost the same level as the opening edge of the seal groove B, when the seal body A is pushed along the inclined surface 3 as described above, the seal A part of the main body A protrudes from the upper end of the inclined surface 3.
そのために、このシール本体Ａに高圧が作用し
たとき、そのリツプ部１が、摺動部との間にかみ
込んでしまうので、そのフリクシヨンが大きくな
り、上記摺動部がロツクされる危険がある。 Therefore, when high pressure is applied to the seal body A, the lip portion 1 gets caught between the seal body A and the sliding portion, which increases the friction and there is a risk that the sliding portion may be locked. .
（本発明の目的）
この発明は、シール本体に高圧が作用しても、
当該シール本体がはみ出さすことがないシール機
構を提供することを目的にする。(Objective of the present invention) This invention has the advantage that even if high pressure acts on the seal body,
To provide a sealing mechanism in which the seal body does not protrude.
（本発明の実施例）
第２図に示した実施例は、シール溝Ｘの断面形
状を平行四辺形にし、圧力が作用する方向に対し
て、後方に位置する傾斜面４を、軸線に対して90
度以下にしてる。(Embodiment of the present invention) In the embodiment shown in FIG. 2, the cross-sectional shape of the seal groove Te90
I keep it below normal.
このようにしたシール溝Ｘにくみ込むシール本
体Ｙは、その断面形状をほぼＵ字状にするととも
に、一対のリツプ部５，６を形成してる。 The seal main body Y, which is fitted into the seal groove X thus constructed, has a substantially U-shaped cross section and also forms a pair of lip portions 5 and 6.
そして、上記一方のリツプ部５、すなわち摺動
部材７に接触するリツプ部５は、シール溝Ｘの底
面側に位置する他方のリツプ部６よりも、その長
さを長くしている。 One of the lip portions 5, that is, the lip portion 5 that contacts the sliding member 7, is longer than the other lip portion 6 located on the bottom side of the seal groove X.
このように、一対のリツプ部５，６を形成した
シール本体Ｙは、上記傾斜面４との対向側面を、
その傾斜面４に沿つて傾斜させて、斜面８として
いる。この斜面８は、上記シール溝Ｘの開口側に
おける稜部９を、シール溝Ｘの開口縁１０より
も、少し内方に位置させている。 In this way, the seal main body Y having the pair of lip portions 5 and 6 has a side surface opposite to the inclined surface 4.
It is inclined along the slope 4 to form a slope 8. The slope 8 has a ridge 9 on the opening side of the seal groove X located slightly inward from the opening edge 10 of the seal groove X.
ただし、上記稜部９は、開口縁１０と同一レベ
ルにしてもよく、要は、この稜部９が開口縁１０
から突出しないようにすればよい。 However, the ridge 9 may be at the same level as the opening edge 10, and the point is that the ridge 9 is at the same level as the opening edge 10.
Just make sure it doesn't stick out.
上記のように構成したので矢印Ｈ方向から高圧
が作用すると、当該シール本体Ｙは、傾斜面４に
沿つて、シール溝Ｘ内に押し込められる。 With the above configuration, when high pressure is applied from the direction of arrow H, the seal main body Y is pushed into the seal groove X along the inclined surface 4.
このとき、一方のリツプ部５が、他方のリツプ
部６より、その長さが長いので、当該シール本体
Ｙが回転することもない。シール本体Ｙが、回転
しないので、高圧が作用しても、当該シール本体
Ｙが大きく変形しなくなる。 At this time, since one lip part 5 is longer than the other lip part 6, the seal body Y does not rotate. Since the seal body Y does not rotate, the seal body Y will not be significantly deformed even if high pressure is applied.
また、上記長いリツプ部５も、多少変形しつつ
傾斜面４側に押し付けられるが、上記したよう
に、シール本体Ｙの稜部９を、シール溝Ｘの開口
縁１０より低い位置に保持しているので、この一
方のリツプ部５が、摺動部間にはみ出さない。 Further, the long lip portion 5 is also pressed against the inclined surface 4 side while being slightly deformed, but as described above, the ridge portion 9 of the seal body Y is held at a position lower than the opening edge 10 of the seal groove X. Therefore, this one lip portion 5 does not protrude between the sliding portions.
リツプ部がはみ出さないので、そのはみ出しに
よるフリクシヨンの増大や、摺動部材７のロツク
などを防止できる。 Since the lip portion does not protrude, an increase in friction and locking of the sliding member 7 due to the protrusion can be prevented.
（本発明の構成）
この発明のシール溝は、圧力の作用方向後方側
の側面に、軸線に対して90度以下にした傾斜面を
形成する一方、このシール溝にくみ込むシール本
体は、その圧力作用方向後方側の側面をシール溝
の傾斜面に沿わせ、かつ、圧力作用方向前側面に
一対のリツプ部を形成し、これら両リツプ部によ
つて断面Ｕ字形状にし、しかも、摺動部材に接触
する一方のリツプ部の長さを、シール溝の底面側
に位置する他方のリツプ部よりも長くし、かつ、
上記傾斜面に沿わせた圧力作用方向後方側のシー
ル本体側面の稜部を、シール溝の開口縁と同一レ
ベルか、あるいはそれよりも内方に位置させた点
に特徴を有する。(Structure of the present invention) The seal groove of the present invention forms an inclined surface at an angle of 90 degrees or less with respect to the axis on the side surface on the rear side in the direction of pressure action. The side surface on the rear side in the direction of pressure application is aligned with the inclined surface of the seal groove, and a pair of lip parts are formed on the front side surface in the direction of pressure action, and these lip parts form a U-shaped cross section. The length of one lip part that contacts the member is made longer than the other lip part located on the bottom side of the seal groove, and
It is characterized in that the ridge of the side surface of the seal body on the rear side in the direction of pressure application along the above-mentioned inclined surface is located at the same level as the opening edge of the seal groove or inwardly therefrom.
（本発明の効果）
この発明は、上記のようにシール本体が、はみ
出さないので、その耐久性が向上するとともに、
はみ出しが原因となるフリクシヨンの増大や、摺
動部材のロツクなどの問題をすべて解消できる。(Effects of the present invention) According to the present invention, since the seal body does not protrude as described above, its durability is improved, and
All problems such as increased friction and locking of sliding members caused by protrusion can be solved.
図面第１図は従来の断面図、第２図はこの発明
の実施例を示す断面図である。
Ｘ……シール溝、４……傾斜面、Ｙ……シール
本体、５，６……リツプ部、７……摺動部材、９
……稜部、１０……開口縁。
FIG. 1 is a sectional view of a conventional device, and FIG. 2 is a sectional view showing an embodiment of the present invention. X... Seal groove, 4... Inclined surface, Y... Seal body, 5, 6... Lip portion, 7... Sliding member, 9
...Ridge, 10...Opening edge.
Claims (1)
に、軸線に対して90度以下にした傾斜面を形成す
る一方、このシール溝にくみ込むシール本体は、
その圧力作用方向後方側の側面をシール溝の傾斜
面に沿わせ、かつ、圧力作用方向前側面に一対の
リツプ部を形成し、これら両リツプ部よつて断面
Ｕ字形状にし、しかも、摺動部材に接触する一方
のリツプ部の長さを、シール溝の底面側に位置す
る他方のリツプ部よりも長くし、かつ、上記傾斜
面に沿わせた圧力作用方向後方側のシール本体側
面の稜部を、シール溝の開口縁と同一レベルか、
あるいはそれよりも内方に位置させてなるシール
機構。1. The seal groove forms an inclined surface at an angle of 90 degrees or less with respect to the axis on the rear side surface in the direction of pressure action, while the seal body that fits into this seal groove,
The side surface on the rear side in the direction of pressure application is aligned with the inclined surface of the seal groove, and a pair of lip parts are formed on the front side surface in the direction of pressure action, and these lip parts have a U-shaped cross section. The length of one lip part that contacts the member is made longer than the other lip part located on the bottom side of the seal groove, and the ridge of the side surface of the seal body on the rear side in the direction of pressure application along the above-mentioned slope. Is it on the same level as the opening edge of the seal groove?
Or a seal mechanism located further inward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58053187A JPS59180166A (en) | 1983-03-29 | 1983-03-29 | Seal mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58053187A JPS59180166A (en) | 1983-03-29 | 1983-03-29 | Seal mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59180166A JPS59180166A (en) | 1984-10-13 |
| JPH0536669B2 true JPH0536669B2 (en) | 1993-05-31 |
Family
ID=12935866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58053187A Granted JPS59180166A (en) | 1983-03-29 | 1983-03-29 | Seal mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59180166A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5316320A (en) * | 1992-03-18 | 1994-05-31 | Corrosion Control Corp. | Isolation gasket for critical service flow line applications |
| US5431415A (en) * | 1993-11-15 | 1995-07-11 | Greene Tweed Of Delaware, Inc. | Seal with acute heel angle |
| WO2004070216A1 (en) * | 2003-02-10 | 2004-08-19 | Imai, Tooru | Liquid pressure device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56129653U (en) * | 1980-03-03 | 1981-10-02 |
-
1983
- 1983-03-29 JP JP58053187A patent/JPS59180166A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59180166A (en) | 1984-10-13 |
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