JPH0285069U - - Google Patents
Info
- Publication number
- JPH0285069U JPH0285069U JP1988164585U JP16458588U JPH0285069U JP H0285069 U JPH0285069 U JP H0285069U JP 1988164585 U JP1988164585 U JP 1988164585U JP 16458588 U JP16458588 U JP 16458588U JP H0285069 U JPH0285069 U JP H0285069U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- seal lip
- spring
- sealing device
- housing
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims 2
- 125000006850 spacer group Chemical group 0.000 description 2
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
第１図は本考案の一実施例に係る密封装置の要
部縦断面図、第２図は第１図の密封装置の高圧下
におけるシールリツプ部の部分断面図、第３図は
第１図の密封装置のスペーサの部分斜視図、第４
図は第１図の密封装置と従来の密封装置の密封対
象の油圧とシールリツプの接触面圧との関係を示
すグラフ、第５図は従来の密封装置の要部縦断面
図である。
符号の説明、１……装置本体、２……ハウジン
グ、３……移動軸、４……シールリツプ、５……
ばね部材、６……バツクアツプリング、７……圧
力導入室、８……ダイアフラム、９……スペーサ
、９１……圧力導入溝、１０……第１リング、１
１……外筒部、１２……外側フランジ、１３……
ゴム部、２０……第２リング、２１……内筒部、
２２……内側フランジ、３０……空間、３１……
圧力導入孔。
FIG. 1 is a vertical sectional view of a main part of a sealing device according to an embodiment of the present invention, FIG. 2 is a partial sectional view of the seal lip portion of the sealing device of FIG. 1 under high pressure, and FIG. 3 is a partial sectional view of the sealing device of FIG. 1. Partial perspective view of the spacer of the sealing device, No. 4
The figure is a graph showing the relationship between the oil pressure of the object to be sealed and the contact surface pressure of the seal lip in the sealing device of FIG. 1 and the conventional sealing device, and FIG. 5 is a longitudinal sectional view of the main part of the conventional sealing device. Explanation of symbols, 1...Device main body, 2...Housing, 3...Moving axis, 4...Seal lip, 5...
Spring member, 6... Backup spring, 7... Pressure introduction chamber, 8... Diaphragm, 9... Spacer, 91... Pressure introduction groove, 10... First ring, 1
1... Outer cylinder part, 12... Outer flange, 13...
Rubber part, 20... second ring, 21... inner cylinder part,
22... Inner flange, 30... Space, 31...
Pressure introduction hole.
Claims (1)
かつ相対移動自在に組み付けられる移動軸との間
に装着される環状部材で、上記移動軸に摺動自在
に密封接触するシールリツプと、当該シールリツ
プの大気側に設けられるバツクアツプリングとを
備えた密封装置において、 前記バツクアツプリングを軸方向に移動可能と
し、バツクアツプリングの大気側に、前記密封流
体の圧力が導入されて該圧力により軸方向密封流
体側に伸縮可能な伸縮部を設け、該伸縮部をバツ
クアツプリングに当接させて成ることを特徴とす
る密封装置。[Claims for Utility Model Registration] An annular member installed between a housing and a moving shaft that is assembled concentrically and movably relative to the housing, and a seal lip that slidably and sealingly contacts the moving shaft. and a backup spring provided on the atmosphere side of the seal lip, wherein the backup spring is movable in the axial direction, and the pressure of the sealing fluid is introduced to the atmosphere side of the backup spring. A sealing device characterized in that an extensible portion is provided on the sealed fluid side in the axial direction by the pressure, and the extensible portion is brought into contact with a back-up spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988164585U JPH0285069U (en) | 1988-12-20 | 1988-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988164585U JPH0285069U (en) | 1988-12-20 | 1988-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0285069U true JPH0285069U (en) | 1990-07-03 |
Family
ID=31450326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988164585U Pending JPH0285069U (en) | 1988-12-20 | 1988-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0285069U (en) |
-
1988
- 1988-12-20 JP JP1988164585U patent/JPH0285069U/ja active Pending