JPS6425566U - - Google Patents
Info
- Publication number
- JPS6425566U JPS6425566U JP1987119964U JP11996487U JPS6425566U JP S6425566 U JPS6425566 U JP S6425566U JP 1987119964 U JP1987119964 U JP 1987119964U JP 11996487 U JP11996487 U JP 11996487U JP S6425566 U JPS6425566 U JP S6425566U
- Authority
- JP
- Japan
- Prior art keywords
- sealing device
- annular recess
- seal body
- circumferential portion
- inner circumferential
- 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 5
- 239000010410 layer Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
第１図は本考案のシール装置の断面図、第２図
はシール本体の成形状態を示す図、第３図は予圧
縮層を形成する状態を示す図、第４図は従来のシ
ール装置の断面図、第５図はシール装置を装着し
た舵取装置用シリンダの断面図、第６図はシリン
ダの内圧変化に伴う環状凹部表層部の内部応力の
変化を示すグラフである。
２０……シール本体、２０ａ……外周部位、２
０ｂ……内周部位、２１……金属製内環、２５…
…環状凹溝、２９……シールリツプ、３０……予
圧縮層。
Fig. 1 is a sectional view of the sealing device of the present invention, Fig. 2 is a drawing showing the molding state of the seal body, Fig. 3 is a drawing showing the state of forming the pre-compression layer, and Fig. 4 is a diagram of the conventional sealing device. FIG. 5 is a cross-sectional view of a steering gear cylinder equipped with a sealing device, and FIG. 6 is a graph showing changes in internal stress in the surface layer of the annular recess due to changes in the internal pressure of the cylinder. 20...Seal main body, 20a...Outer peripheral part, 2
0b...Inner peripheral part, 21...Metal inner ring, 25...
...Annular groove, 29...Seal lip, 30...Precompression layer.
Claims (1)
を内蔵する外周部位と、環状凹部にて離隔されか
つ内周側に弾性変形可能な内周部位を形成し、こ
の内周部位に軸と摺動可能に接触するシールリツ
プを形成したシール装置において、前記シール本
体の環状凹部の表層部に予圧縮層を形成したこと
を特徴とするシール装置。 A seal body made of an elastic material has an outer circumferential portion containing a metal inner ring, and an inner circumferential portion that is separated by an annular recess and is elastically deformable on the inner circumferential side. What is claimed is: 1. A sealing device in which a seal lip is formed in movable contact with the sealing device, characterized in that a pre-compression layer is formed in a surface layer of the annular recess of the seal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987119964U JPS6425566U (en) | 1987-08-05 | 1987-08-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987119964U JPS6425566U (en) | 1987-08-05 | 1987-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6425566U true JPS6425566U (en) | 1989-02-13 |
Family
ID=31365650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987119964U Pending JPS6425566U (en) | 1987-08-05 | 1987-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6425566U (en) |
-
1987
- 1987-08-05 JP JP1987119964U patent/JPS6425566U/ja active Pending