JPS63106961U - - Google Patents
Info
- Publication number
- JPS63106961U JPS63106961U JP1986199067U JP19906786U JPS63106961U JP S63106961 U JPS63106961 U JP S63106961U JP 1986199067 U JP1986199067 U JP 1986199067U JP 19906786 U JP19906786 U JP 19906786U JP S63106961 U JPS63106961 U JP S63106961U
- Authority
- JP
- Japan
- Prior art keywords
- elastic ring
- ring
- resin
- seal
- sliding surface
- 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
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
第１図は本考案を適用したシールリングの自由
状態を示す縦断面拡大図、第２図は油圧の分布状
態を各シールの位置と対応させて示すグラフ、第
３図は楔作用による発生圧力示す第１図の第２シ
ールの拡大部分図、第４図はロツドの静止時或は
後方突出時の油圧力の分布状態を示すグラフ、第
５図は第２シールにおけるロツドの戻り時の油圧
力の分布を示すグラフ、第６図は従来例の縦断面
図である。１…ハウジング、２，３…第１、第２
環状溝、５…摺動ロツド（摺動部材）、８，９…
第１、第２シール、１０…第２弾性リング、１１
…第２樹脂リング、２５…第１弾性リング、２６
…第２樹脂リング、１６，１７，１８，２７，２
８，２９…楔形環状溝。
Figure 1 is an enlarged vertical cross-sectional view showing the free state of a seal ring to which the present invention is applied, Figure 2 is a graph showing the distribution of hydraulic pressure in relation to the position of each seal, and Figure 3 is the pressure generated by wedge action. Fig. 4 is a graph showing the distribution of hydraulic pressure when the rod is at rest or protrudes backward, and Fig. 5 is an enlarged partial view of the second seal in Fig. 1. A graph showing the pressure distribution, and FIG. 6 is a vertical cross-sectional view of a conventional example. 1...housing, 2, 3...first, second
Annular groove, 5...Sliding rod (sliding member), 8, 9...
First and second seals, 10...second elastic ring, 11
...Second resin ring, 25...First elastic ring, 26
...Second resin ring, 16, 17, 18, 27, 2
8, 29... Wedge-shaped annular groove.
Claims (1)
し、第１、第２シールをそれぞれ第１、第２環状
溝に装着し、第１シールとして摺接面側に４ふつ
化エチレン樹脂系の第１樹脂リングを配置すると
共に摺接面側と反対側に第１弾性リングを配置し
、第２シールとして第２弾性リングと第２樹脂リ
ングを軸方向に並べて組合せ、第２弾性リングの
、軸方向前方の圧力室側の前部を断面形状Ｕ字形
状とし、第２弾性リングの前記圧力室と反対側の
後端部に、軸方向の後方にゆくに従い摺接面側か
ら遠ざかるように傾斜するテーパー面を形成し、
第２弾性リングのテーパー面に第２樹脂リングの
テーパー面を当接させ、各環状溝内のそれぞれの
樹脂リングの摺接面に複数本の環状楔形溝を形成
し、各楔形環状溝の断面形状を、圧力室側前方に
ゆくに従い溝底が浅くなる楔形にしていることを
特徴とするシール構造。 First and second annular grooves are formed in the seal attachment member, and the first and second seals are attached to the first and second annular grooves, respectively, and a 4-fluoride ethylene resin is formed on the sliding surface side as the first seal. A first resin ring of the system is arranged, and a first elastic ring is arranged on the side opposite to the sliding surface side, and as a second seal, the second elastic ring and the second resin ring are arranged and combined in the axial direction, and the second elastic ring is formed. The front part on the axially front side of the pressure chamber has a U-shaped cross-section, and the second elastic ring has a second elastic ring at the rear end on the opposite side from the pressure chamber, and the second elastic ring moves away from the sliding surface side as it goes rearward in the axial direction. Forms a tapered surface that slopes like this,
The tapered surface of the second resin ring is brought into contact with the tapered surface of the second elastic ring, a plurality of annular wedge-shaped grooves are formed on the sliding surface of each resin ring in each annular groove, and a cross section of each wedge-shaped annular groove is formed. A seal structure characterized by a wedge-shaped groove in which the bottom becomes shallower toward the front on the pressure chamber side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986199067U JPH054620Y2 (en) | 1986-12-29 | 1986-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986199067U JPH054620Y2 (en) | 1986-12-29 | 1986-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63106961U true JPS63106961U (en) | 1988-07-11 |
| JPH054620Y2 JPH054620Y2 (en) | 1993-02-04 |
Family
ID=31160344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986199067U Expired - Lifetime JPH054620Y2 (en) | 1986-12-29 | 1986-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH054620Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017036764A (en) * | 2015-08-07 | 2017-02-16 | Nok株式会社 | Sealing device and sealing structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812761U (en) * | 1981-07-20 | 1983-01-26 | 三菱電線工業株式会社 | composite seal |
| JPS5926669A (en) * | 1982-08-04 | 1984-02-10 | Sakagami Seisakusho:Kk | Composite packing |
| JPS60121367A (en) * | 1983-12-02 | 1985-06-28 | Ckd Corp | Sealing |
-
1986
- 1986-12-29 JP JP1986199067U patent/JPH054620Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812761U (en) * | 1981-07-20 | 1983-01-26 | 三菱電線工業株式会社 | composite seal |
| JPS5926669A (en) * | 1982-08-04 | 1984-02-10 | Sakagami Seisakusho:Kk | Composite packing |
| JPS60121367A (en) * | 1983-12-02 | 1985-06-28 | Ckd Corp | Sealing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017036764A (en) * | 2015-08-07 | 2017-02-16 | Nok株式会社 | Sealing device and sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH054620Y2 (en) | 1993-02-04 |
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