JPH0327805U - - Google Patents
Info
- Publication number
- JPH0327805U JPH0327805U JP1989088446U JP8844689U JPH0327805U JP H0327805 U JPH0327805 U JP H0327805U JP 1989088446 U JP1989088446 U JP 1989088446U JP 8844689 U JP8844689 U JP 8844689U JP H0327805 U JPH0327805 U JP H0327805U
- Authority
- JP
- Japan
- Prior art keywords
- valve stem
- seal
- sealing
- sealing tube
- sliding
- 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 5
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
第１図は本考案のバルブステムシールの一実施
例を示す断面図、第２図ａ〜ｄは凹凸形状の各例
を示す断面図、第３図はオイルの漏れ量と確率度
数の関係を示す特性図、第４図は従来のバルブス
テムシールを装着したエンジンヘツド部の断面図
、第５図は従来のバルブステムシールの断面図、
第６図は第５図の部拡大図である。
７……バルブステム、８……ガイド、９ａ……
バルブステムシール、１４……シール筒、１７…
…シールリツプ、２０……締付けばね。
Fig. 1 is a sectional view showing one embodiment of the valve stem seal of the present invention, Figs. 2 a to d are sectional views showing examples of uneven shapes, and Fig. 3 shows the relationship between oil leakage amount and probability frequency. Figure 4 is a sectional view of an engine head equipped with a conventional valve stem seal; Figure 5 is a sectional view of a conventional valve stem seal;
FIG. 6 is an enlarged view of a portion of FIG. 5. 7... Valve stem, 8... Guide, 9a...
Valve stem seal, 14...Seal tube, 17...
...Seal lip, 20...Tightening spring.
Claims (1)
するガイドの端部に嵌装されてシールを行なうバ
ルブステムシールにおいて、前記バルブステムが
摺動自在に挿通されるシール筒と、前記バルブス
テムの外面に環状に密着するようにシール筒の内
面に突出形成されたシールリツプと、前記シール
筒の外周部に装着されてシール筒を縮径させる締
付力を付与する締付ばねとを備え、前記シール筒
およびシールリツプの内面の少なくともバルブス
テムと摺接する部分に微細な凹凸を形成したこと
を特徴とするバルブステムシール。 A valve stem seal that is fitted to the end of a guide that guides the sliding of a valve stem inserted in the axial direction to perform sealing includes a seal cylinder through which the valve stem is slidably inserted; The sealing lip protrudes from the inner surface of the sealing tube so as to be in close contact with the outer surface in an annular shape, and the tightening spring is attached to the outer circumference of the sealing tube and applies a tightening force to reduce the diameter of the sealing tube. A valve stem seal characterized in that fine irregularities are formed on at least the portions of the inner surfaces of the seal cylinder and seal lip that come into sliding contact with the valve stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989088446U JPH0327805U (en) | 1989-07-27 | 1989-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989088446U JPH0327805U (en) | 1989-07-27 | 1989-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0327805U true JPH0327805U (en) | 1991-03-20 |
Family
ID=31638061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989088446U Pending JPH0327805U (en) | 1989-07-27 | 1989-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0327805U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826349B1 (en) * | 1971-11-24 | 1973-08-09 |
-
1989
- 1989-07-27 JP JP1989088446U patent/JPH0327805U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826349B1 (en) * | 1971-11-24 | 1973-08-09 |