JPH0327806U - - Google Patents
Info
- Publication number
- JPH0327806U JPH0327806U JP1989088447U JP8844789U JPH0327806U JP H0327806 U JPH0327806 U JP H0327806U JP 1989088447 U JP1989088447 U JP 1989088447U JP 8844789 U JP8844789 U JP 8844789U JP H0327806 U JPH0327806 U JP H0327806U
- Authority
- JP
- Japan
- Prior art keywords
- seal
- valve stem
- seal lip
- lip
- slidably inserted
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
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図はシールリツプ部の拡大
断面図、第3図はシールリツプ部の形状を示す拡
大平面図、第4図はシールリツプとバルブステム
との摺接部の周方向の面圧分布を示す特性図、第
5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6図は従来のバルブス
テムシールの断面図、第7図は第6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、21…
…シールリツプ、22……締付けばね。
Fig. 1 is a sectional view showing an embodiment of the valve stem seal of the present invention, Fig. 2 is an enlarged sectional view of the seal lip, Fig. 3 is an enlarged plan view showing the shape of the seal lip, and Fig. 4 is an enlarged sectional view of the seal lip. A characteristic diagram showing the surface pressure distribution in the circumferential direction at the sliding contact area with the valve stem. Figure 5 is a cross-sectional view of the engine head equipped with a conventional valve stem seal. Figure 6 is a cross-sectional view of the conventional valve stem seal. , FIG. 7 is an enlarged view of a portion of FIG. 6. 7... Valve stem, 8... Guide, 9a...
Valve stem seal, 14...Seal tube, 21...
...Seal lip, 22...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環状先端部を有して
前記シール筒の内面に突出形成されたシールリツ
プと、前記シールリツプ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、前記シールリツプの環状の先端部が周方
向に不均一の面圧分布でバルブステム外面に密着
する形状に成形されている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, and a seal cylinder through which the valve stem is slidably inserted; A seal lip having an annular tip that contacts the outer surface in an annular shape and protruding from the inner surface of the seal tube; and a tightening spring that is attached to the outer periphery of the seal lip and applies a tightening force to reduce the diameter of the seal tube. A valve stem seal, characterized in that the annular tip of the seal lip is shaped to tightly contact the outer surface of the valve stem with uneven surface pressure distribution in the circumferential direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989088447U JPH0511285Y2 (en) | 1989-07-27 | 1989-07-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989088447U JPH0511285Y2 (en) | 1989-07-27 | 1989-07-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0327806U true JPH0327806U (en) | 1991-03-20 |
JPH0511285Y2 JPH0511285Y2 (en) | 1993-03-19 |
Family
ID=31638062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1989088447U Expired - Lifetime JPH0511285Y2 (en) | 1989-07-27 | 1989-07-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0511285Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008104823A (en) * | 2006-10-24 | 2008-05-08 | Shinichi Makise | Automatic lower back and buttock massage machine |
-
1989
- 1989-07-27 JP JP1989088447U patent/JPH0511285Y2/ja not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008104823A (en) * | 2006-10-24 | 2008-05-08 | Shinichi Makise | Automatic lower back and buttock massage machine |
Also Published As
Publication number | Publication date |
---|---|
JPH0511285Y2 (en) | 1993-03-19 |