JPH0335343U - - Google Patents
Info
- Publication number
- JPH0335343U JPH0335343U JP1989096439U JP9643989U JPH0335343U JP H0335343 U JPH0335343 U JP H0335343U JP 1989096439 U JP1989096439 U JP 1989096439U JP 9643989 U JP9643989 U JP 9643989U JP H0335343 U JPH0335343 U JP H0335343U
- Authority
- JP
- Japan
- Prior art keywords
- piston rod
- seal
- rod
- seal structure
- sharp edge
- 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
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
Description
第１図は本考案の油圧シリンダのシール構造の
第１実施例を示すものでありシール構造の一部分
の拡大断面図、第２図は本考案の第２実施例を示
すものでありシール構造の一部分の拡大断面図、
第３図は本考案の第３実施例を示すものでありシ
ール構造の一部分の拡大断面図、第４図は本考案
の第４の実施例を示すものでありシール構造の一
部分の拡大断面図、第５図ないし第９図は従来の
技術を示すものであり、第５図は油圧緩衝器とし
て使用する油圧シリンダの側断面図、第６図、第
７図はシール構造の一部分の拡大断面図、第８図
、第９図は他のシール構造の一部分の拡大断面図
である。
１……内シリンダ、２……外シリンダ、４……
ピストンロツド、５……ロツドシール、５ａ……
段部、５ｂ……テーパ部、５ｃ……シヤープエツ
ヂ、６……ロツドガイド、８……Ｏリング（押付
けリング）、１１……環状部材。
Fig. 1 shows a first embodiment of the seal structure for a hydraulic cylinder according to the present invention, and is an enlarged sectional view of a part of the seal structure, and Fig. 2 shows a second embodiment of the present invention, and shows the seal structure. Enlarged cross-sectional view of a part,
Fig. 3 shows a third embodiment of the present invention, and is an enlarged sectional view of a portion of the seal structure, and Fig. 4 shows a fourth embodiment of the invention, and is an enlarged sectional view of a portion of the seal structure. , Fig. 5 to Fig. 9 show the conventional technology, Fig. 5 is a side sectional view of a hydraulic cylinder used as a hydraulic shock absorber, and Fig. 6 and Fig. 7 are enlarged sectional views of a part of the seal structure. 8 and 9 are enlarged sectional views of a portion of another seal structure. 1...Inner cylinder, 2...Outer cylinder, 4...
Piston rod, 5... Rod seal, 5a...
Stepped portion, 5b: Tapered portion, 5c: Sharp edge, 6: Rod guide, 8: O-ring (pressing ring), 11: Annular member.
Claims (1)
ロツドを設け、該ピストンロツドの外周にロツド
シールを嵌合すると共に、該ロツドシールの外周
にゴム製の押付けリングを設けたシール構造であ
つて、上記ロツドシールの内周面に環状でかつ上
記ピストンロツドの外周面と密接するシヤープエ
ツヂを形成し、さらに該ロツドシールの所定の場
所にシヤープエツヂを支点としてピストンロツド
側へ近づく方向の変形を防止するよう剛性を有す
る環状部材を配設したことを特徴とする油圧シリ
ンダのシール構造。 A seal structure in which a piston rod is provided inside a cylinder so as to be freely movable in the axial direction, a rod seal is fitted on the outer periphery of the piston rod, and a rubber pressing ring is provided on the outer periphery of the rod seal. A sharp edge that is annular and in close contact with the outer circumferential surface of the piston rod is formed on the surface, and a rigid annular member is disposed at a predetermined location of the rod seal to prevent deformation in a direction toward the piston rod with the sharp edge as a fulcrum. A seal structure for a hydraulic cylinder characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989096439U JP2529107Y2 (en) | 1989-08-18 | 1989-08-18 | Cylinder seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989096439U JP2529107Y2 (en) | 1989-08-18 | 1989-08-18 | Cylinder seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0335343U true JPH0335343U (en) | 1991-04-05 |
| JP2529107Y2 JP2529107Y2 (en) | 1997-03-19 |
Family
ID=31645642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989096439U Expired - Lifetime JP2529107Y2 (en) | 1989-08-18 | 1989-08-18 | Cylinder seal structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2529107Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019128029A (en) * | 2018-01-26 | 2019-08-01 | 日立オートモティブシステムズ株式会社 | Cylinder device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57157845A (en) * | 1981-03-20 | 1982-09-29 | Yamaha Motor Co Ltd | Sealing construction of piston rod in oil hydraulic shock absorber |
| JPS59103961U (en) * | 1982-12-28 | 1984-07-12 | エヌオーケー株式会社 | dust seal |
-
1989
- 1989-08-18 JP JP1989096439U patent/JP2529107Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57157845A (en) * | 1981-03-20 | 1982-09-29 | Yamaha Motor Co Ltd | Sealing construction of piston rod in oil hydraulic shock absorber |
| JPS59103961U (en) * | 1982-12-28 | 1984-07-12 | エヌオーケー株式会社 | dust seal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019128029A (en) * | 2018-01-26 | 2019-08-01 | 日立オートモティブシステムズ株式会社 | Cylinder device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2529107Y2 (en) | 1997-03-19 |