JPH02119566U - - Google Patents
Info
- Publication number
- JPH02119566U JPH02119566U JP2793489U JP2793489U JPH02119566U JP H02119566 U JPH02119566 U JP H02119566U JP 2793489 U JP2793489 U JP 2793489U JP 2793489 U JP2793489 U JP 2793489U JP H02119566 U JPH02119566 U JP H02119566U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- seal ring
- fitted
- annular groove
- zero
- 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 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１図〜第４図は本考案の一実施例に係るピス
トンのシール装置を示すもので、第１図は第２図
の−線に沿う断面図、第２図は側面図、第３
図および第４図は作動を説明する図、第５図は従
来の装置の縦断面図である。
２……ピストン、２ａ……環状溝、２ｂ，２ｃ
……通路（油路）、４……Ｏリング、６……シー
ルリング、８……シリンダ。
1 to 4 show a piston sealing device according to an embodiment of the present invention, in which FIG. 1 is a sectional view taken along the - line in FIG. 2, FIG. 2 is a side view, and FIG.
4 and 4 are diagrams for explaining the operation, and FIG. 5 is a longitudinal sectional view of the conventional device. 2... Piston, 2a... Annular groove, 2b, 2c
...Passage (oil passage), 4...O ring, 6...Seal ring, 8...Cylinder.
Claims (1)
溝内の内周側にＯリング、外周側にシールリング
を嵌合させ、このシールリングの外周面をシリン
ダの内周面に摺接させるピストンのシール装置に
おいて、上記シールリングを、その両側面がピス
トンの環状溝の両側壁に対してクリアランスが零
または零に近い状態で嵌合させるとともに、環状
溝のシールリング内周面よりも内部側とピストン
の両側受圧面とを連通する通路を形成したことを
特徴とするピストンのシール装置。 A piston in which an annular groove is formed on the outer circumferential surface of the piston, an O-ring is fitted on the inner circumferential side of the annular groove, a seal ring is fitted on the outer circumferential side, and the outer circumferential surface of the seal ring is slidably contacted with the inner circumferential surface of the cylinder. In the sealing device, the above-mentioned seal ring is fitted with both sides of the seal ring having zero or close to zero clearance to both side walls of the annular groove of the piston, and the seal ring is fitted to the side walls of the annular groove of the piston in a state where the clearance is zero or close to zero. A sealing device for a piston, characterized in that a passage is formed that communicates between the pressure-receiving surfaces on both sides of the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2793489U JPH02119566U (en) | 1989-03-10 | 1989-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2793489U JPH02119566U (en) | 1989-03-10 | 1989-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02119566U true JPH02119566U (en) | 1990-09-26 |
Family
ID=31250867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2793489U Pending JPH02119566U (en) | 1989-03-10 | 1989-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02119566U (en) |
-
1989
- 1989-03-10 JP JP2793489U patent/JPH02119566U/ja active Pending