JPH0452658U - - Google Patents
Info
- Publication number
- JPH0452658U JPH0452658U JP9497490U JP9497490U JPH0452658U JP H0452658 U JPH0452658 U JP H0452658U JP 9497490 U JP9497490 U JP 9497490U JP 9497490 U JP9497490 U JP 9497490U JP H0452658 U JPH0452658 U JP H0452658U
- Authority
- JP
- Japan
- Prior art keywords
- piston seal
- piston
- elastic body
- hollow elastic
- hole
- 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
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１図は本考案に係るピストンシール機構の第
１実施例を示す縦断面図、第２図は第１図の部
の拡大断面図、第３図及び第４図はそれぞれ本考
案に係るピストンシール機構の第２実施例及び第
３実施例を示す縦断面図、第５図は第４図に示し
た本考案の第３実施例におけるピストンシールの
シール面圧分布状態を示す図、第６図は本考案に
係るピストンシール機構の第４実施例を示す縦断
面図、第７図は従来の液圧シリンダを示す全体断
面図、第８図は従来のピストンシール機構の一例
を示す縦断面図である。
１１……ピストン、１２……ピストンシール、
１３……ウエアリング、１４……ピストンシール
装着溝、１５……シリンダチユーブ、１６……バ
ツクリング、１６ａ……平坦部、１７……導通管
、１８……孔、１９……Ｏリング溝、２０……Ｏ
リング、２１……盲栓、２２……スプール、２３
……バネ、２４……Ｏリング溝、２５……Ｏリン
グ、２６……バネ調整用押え板、２７，２８……
バツクリング、２９……ピストンシール、２９ａ
……突出部。
FIG. 1 is a vertical sectional view showing a first embodiment of the piston seal mechanism according to the present invention, FIG. 2 is an enlarged sectional view of the part shown in FIG. 1, and FIGS. 3 and 4 are pistons according to the present invention. FIG. 5 is a vertical sectional view showing the second and third embodiments of the seal mechanism; FIG. 5 is a diagram showing the seal surface pressure distribution state of the piston seal in the third embodiment of the present invention shown in FIG. 4; FIG. 7 is a longitudinal cross-sectional view showing a fourth embodiment of the piston seal mechanism according to the present invention, FIG. 7 is an overall cross-sectional view showing a conventional hydraulic cylinder, and FIG. 8 is a vertical cross-sectional view showing an example of a conventional piston seal mechanism. It is a diagram. 11... Piston, 12... Piston seal,
13... Wear ring, 14... Piston seal mounting groove, 15... Cylinder tube, 16... Back ring, 16a... Flat part, 17... Conduction tube, 18... Hole, 19... O-ring groove, 20 ...O
Ring, 21... Blind plug, 22... Spool, 23
... Spring, 24 ... O-ring groove, 25 ... O-ring, 26 ... Spring adjustment presser plate, 27, 28 ...
Back ring, 29...Piston seal, 29a
...protrusion.
Claims (1)
ングを装着した液圧シリンダのピストンシール機
構において、前記ピストンシールの内周面に中空
状の弾性体を設けると共に該中空弾性体に導通管
を取り付け、かつ前記ピストンには該導通管に通
じる孔を設け、外部から作動流体圧が該孔を通つ
て中空弾性体に蓄圧できるよう構成したことを特
徴とするピストンシール機構。 In a piston seal mechanism for a hydraulic cylinder in which a piston seal and a wear ring are attached to the outer circumference of the piston, a hollow elastic body is provided on the inner circumference of the piston seal, and a conduction pipe is attached to the hollow elastic body, and A piston seal mechanism characterized in that the piston is provided with a hole that communicates with the conduction pipe, so that working fluid pressure from the outside can be accumulated in the hollow elastic body through the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9497490U JPH0452658U (en) | 1990-09-10 | 1990-09-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9497490U JPH0452658U (en) | 1990-09-10 | 1990-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0452658U true JPH0452658U (en) | 1992-05-06 |
Family
ID=31833335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9497490U Pending JPH0452658U (en) | 1990-09-10 | 1990-09-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0452658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011522193A (en) * | 2008-06-06 | 2011-07-28 | アイゼントロピック リミテッド | Fluid servo and applications |
-
1990
- 1990-09-10 JP JP9497490U patent/JPH0452658U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011522193A (en) * | 2008-06-06 | 2011-07-28 | アイゼントロピック リミテッド | Fluid servo and applications |