JPH03121262U - - Google Patents
Info
- Publication number
- JPH03121262U JPH03121262U JP1990030825U JP3082590U JPH03121262U JP H03121262 U JPH03121262 U JP H03121262U JP 1990030825 U JP1990030825 U JP 1990030825U JP 3082590 U JP3082590 U JP 3082590U JP H03121262 U JPH03121262 U JP H03121262U
- Authority
- JP
- Japan
- Prior art keywords
- skirt portion
- base
- piston seal
- piston
- skirt
- 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
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Description
第１図は本考案の一実施例を示す一部切断した
斜視図、第２図は同じく部分断面図、第３図はス
カートの接触幅と差圧の関係を示すグラフ、第４
図イ，ロ，ハはスカート部の接触幅の変化を示す
説明図、第５図イ，ロ，ハは他の実施例を示す説
明図、第６図は従来例を示す部分断面図である。
１……ピストンシール、２……軸受部、３……
スカート部、３ａ……先端、３ｂ……基部、４…
…切欠、５……舌状部分、６……隙間、１００…
…シリンダ、１０１……ピストン、１０２……環
状凹凸、Ａ，Ｂ……空間。
Fig. 1 is a partially cutaway perspective view showing an embodiment of the present invention, Fig. 2 is a partially sectional view, Fig. 3 is a graph showing the relationship between the contact width of the skirt and the differential pressure, and Fig. 4 is a graph showing the relationship between the contact width of the skirt and the differential pressure.
Figures A, B, and C are explanatory views showing changes in the contact width of the skirt portion, Figures A, B, and C are explanatory views showing other embodiments, and Figure 6 is a partial sectional view showing a conventional example. . 1... Piston seal, 2... Bearing section, 3...
Skirt portion, 3a...Tip, 3b...Base, 4...
... Notch, 5 ... Tongue-shaped part, 6 ... Gap, 100 ...
... Cylinder, 101 ... Piston, 102 ... Annular unevenness, A, B ... Space.
Claims (1)
２の一端に、外径側へ傾斜状に展開したスカート
部３を一体に設けたピストンシールにおいて、上
記スカート部３にその先端３ａから基部３ｂへ向
けて延びる多数の切欠４を形成し、この切欠４は
、スカート部３の両側空間Ａ，Ｂの差圧が零であ
る場合の、シリンダ１００との接触面Ｓの基部３
ｂ側限縁部の近傍に達することを特徴とする一方
向性ピストンシール。 In a piston seal in which a skirt portion 3 is integrally provided at one end of the bearing portion 2 which is press-fitted with the outer circumferential surface of the piston 101 and is developed in an inclined manner toward the outer diameter side, the skirt portion 3 is provided with a base portion 3b extending from its tip 3a to its base portion 3b. A large number of notches 4 are formed extending toward the base 3 of the contact surface S with the cylinder 100 when the differential pressure between the spaces A and B on both sides of the skirt portion 3 is zero.
A unidirectional piston seal characterized in that it reaches near the b-side limit edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990030825U JP2521863Y2 (en) | 1990-03-26 | 1990-03-26 | Piston cylinder device using one-way piston seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990030825U JP2521863Y2 (en) | 1990-03-26 | 1990-03-26 | Piston cylinder device using one-way piston seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03121262U true JPH03121262U (en) | 1991-12-12 |
| JP2521863Y2 JP2521863Y2 (en) | 1997-01-08 |
Family
ID=31533538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990030825U Expired - Lifetime JP2521863Y2 (en) | 1990-03-26 | 1990-03-26 | Piston cylinder device using one-way piston seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2521863Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6182072A (en) * | 1984-09-28 | 1986-04-25 | Nok Corp | Shock absorber piston and its manufacturing method and device |
-
1990
- 1990-03-26 JP JP1990030825U patent/JP2521863Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6182072A (en) * | 1984-09-28 | 1986-04-25 | Nok Corp | Shock absorber piston and its manufacturing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2521863Y2 (en) | 1997-01-08 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |