JPH03370U - - Google Patents
Info
- Publication number
- JPH03370U JPH03370U JP1989060673U JP6067389U JPH03370U JP H03370 U JPH03370 U JP H03370U JP 1989060673 U JP1989060673 U JP 1989060673U JP 6067389 U JP6067389 U JP 6067389U JP H03370 U JPH03370 U JP H03370U
- Authority
- JP
- Japan
- Prior art keywords
- seal
- lip
- fluid
- seal lip
- holding 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
第１図は本考案の一実施例に係るオイルシール
の低圧下における要部縦断面図、第２図は第１図
のオイルシールの高圧下における要部縦断面図、
第３図及び第４図は従来のオイルシールの要部縦
断面図である。
符号の説明、１…オイルシール、２…シールリ
ツプ、３…シール本体、３１…金属環、４…保持
部材、４１…突出部、４２…段差部、４３…端面
、４４…突き当て部、４５…大気側端面、４６…
環状凹部、５…補助シール部材、５３…補助リツ
プ、６…ハウジング、６１…軸孔、７…軸、９…
Ｏリング、１０…板ばね、１１…圧力室、１２…
スペーサ、１３…連通路、１４…開閉手段、Ｏ…
密封対象流体、Ａ…離間位置、Ｂ…リツプ保持位
置。
FIG. 1 is a vertical cross-sectional view of the main parts of an oil seal according to an embodiment of the present invention under low pressure, and FIG. 2 is a vertical cross-sectional view of the main parts of the oil seal of FIG. 1 under high pressure.
3 and 4 are longitudinal sectional views of essential parts of a conventional oil seal. Explanation of symbols, 1...Oil seal, 2...Seal lip, 3...Seal body, 31...Metal ring, 4...Holding member, 41...Protrusion part, 42...Step part, 43...End face, 44...Abutment part, 45... Atmospheric side end face, 46...
Annular recess, 5... Auxiliary seal member, 53... Auxiliary lip, 6... Housing, 61... Shaft hole, 7... Shaft, 9...
O-ring, 10...plate spring, 11...pressure chamber, 12...
Spacer, 13...Communication path, 14...Opening/closing means, O...
Fluid to be sealed, A... Separated position, B... Lip holding position.
Claims (1)
、外周がハウジングの軸孔に流体密に嵌着固定さ
れるシール本体と、該シール本体の反密封対象流
体側に配置されシールリツプを保持する保持部材
とを備えたオイルシールにおいて、 前記保持部材を軸方向に移動可能とし、保持部
材を、密封対象流体の流体圧が所定圧以下のとき
はシールリツプから離間させる離間位置に、流体
圧が所定圧を越えるとシールリツプに接触してシ
ールリツプを保持するリツプ保持位置に移動させ
るための移動手段を設けて成ることを特徴とする
オイルシール。[Claims for Utility Model Registration] A seal body that has a seal lip on the inner diameter side that makes sealing contact with the shaft, and whose outer periphery is fluid-tightly fitted and fixed to the shaft hole of the housing, and An oil seal having a holding member arranged to hold a seal lip, wherein the holding member is movable in the axial direction, and the holding member is separated from the seal lip when the fluid pressure of the fluid to be sealed is below a predetermined pressure. An oil seal characterized in that it is provided with a moving means for moving the lip to a lip holding position where it comes into contact with the seal lip and holds the seal lip when the fluid pressure exceeds a predetermined pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989060673U JPH03370U (en) | 1989-05-25 | 1989-05-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989060673U JPH03370U (en) | 1989-05-25 | 1989-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03370U true JPH03370U (en) | 1991-01-07 |
Family
ID=31588246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989060673U Pending JPH03370U (en) | 1989-05-25 | 1989-05-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03370U (en) |
-
1989
- 1989-05-25 JP JP1989060673U patent/JPH03370U/ja active Pending
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