JPH0158801U - - Google Patents
Info
- Publication number
- JPH0158801U JPH0158801U JP15483087U JP15483087U JPH0158801U JP H0158801 U JPH0158801 U JP H0158801U JP 15483087 U JP15483087 U JP 15483087U JP 15483087 U JP15483087 U JP 15483087U JP H0158801 U JPH0158801 U JP H0158801U
- Authority
- JP
- Japan
- Prior art keywords
- free piston
- protrusion
- piston
- recess
- seal
- 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
- 239000007788 liquid Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Fluid-Damping Devices (AREA)
Description
第１〜３図は本考案に係るピストン型アキユム
レータの一実施例を示す図であり、第１図はその
断面図、第２図ａはそのフリーピストンの要部拡
大図、第２図ｂはそのシール部の要部拡大図、第
３図ａはそのＯリングの初期状態を示す図、第３
図ｂはそのＯリングの摩耗状態を示す図、第３図
ｃはそのＯリングの面圧分布を示す図、第４〜６
図は従来のピストン型アキユムレータを示す図で
あり、第４図ａはそのフリーピストンに嵌入時の
Ｏリングの静止状態を示す図、第４図ｂ，ｃは何
れもそのフリーピストンの摺動に伴うＯリングの
動きを示す図、第５図ａはそのＯリングの初期状
態を示す図、第５図ｂはそのＯリングの摩耗状態
を示す図、第６図ａはそのＯリングの初期状態の
面圧分布を示す図、第６図ｂはその偏摩耗したＯ
リングの面圧分布を示す図である。
１１……シリンダ本体、１２……フリーピスト
ン、１３……液室、１４……ガス室、１５……凹
部、１６……突部、１７……Ｏリング（シール部
）、１８……被覆部、１９……シール部材。
1 to 3 are views showing one embodiment of a piston type accumulator according to the present invention, FIG. 1 is a sectional view thereof, FIG. 2a is an enlarged view of the main part of the free piston, and FIG. 2b is a Figure 3a is an enlarged view of the main part of the sealing part, and Figure 3a is a diagram showing the initial state of the O-ring.
Figure b is a diagram showing the wear state of the O-ring, Figure 3c is a diagram showing the surface pressure distribution of the O-ring, and Figures 4 to 6
The figures show a conventional piston-type accumulator. Fig. 4a shows the O-ring at rest when it is fitted into the free piston, and Figs. 4b and 4c show the free piston sliding. Figure 5a is a diagram showing the O-ring's initial state; Figure 5b is a diagram showing the worn state of the O-ring; Figure 6a is the initial state of the O-ring. Figure 6b shows the surface pressure distribution of the unevenly worn O
It is a figure showing surface pressure distribution of a ring. 11...Cylinder body, 12...Free piston, 13...Liquid chamber, 14...Gas chamber, 15...Recess, 16...Protrusion, 17...O ring (sealing part), 18...Coating part , 19... Seal member.
Claims (1)
し、フリーピストンによりシリンダ内をガス室と
液室に区画するとともに、フリーピストンの外周
に凹部を設け、凹部からフリーピストンのガス室
側端面に向かつて所定の肉厚を有する突部が形成
されるとともに、該凹部に弾性体からなるシール
部材を嵌入してガス室と液室の気密を維持するピ
ストン型アキユムレータにおいて、前記シール部
材を、凹部に嵌入するシール部と、フリーピスト
ンの凹部からガス室側端面までの突部を覆う被覆
部と、により構成し、シール部および被覆部を一
体成形するとともに、被覆部におけるシール部端
面からフリーピストンのガス室側端面に接する部
分までの長さを、フリーピストンの突部の軸方向
肉厚よりも小さく成形し、被覆部をフリーピスト
ンの突部に被覆したとき前記シール部が所定の張
力で引張り固定状態となるようにしたことを特徴
とするピストン型アキユムレータ。 A free piston is slidably housed in the cylinder, and the free piston divides the inside of the cylinder into a gas chamber and a liquid chamber, and a recess is provided on the outer periphery of the free piston. In a piston type accumulator in which a protrusion having a predetermined wall thickness is formed and a seal member made of an elastic body is fitted into the recess to maintain airtightness between a gas chamber and a liquid chamber, the seal member is fitted into the recess. The seal part and the covering part cover the protrusion from the recessed part of the free piston to the end face on the gas chamber side.The seal part and the covering part are integrally molded, and the gas of the free piston is The length up to the part that contacts the chamber side end surface is molded to be smaller than the axial wall thickness of the protrusion of the free piston, and when the covering part is coated on the protrusion of the free piston, the seal part is pulled and fixed with a predetermined tension. A piston-type accumulator characterized in that it is configured to be in the following state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15483087U JPH0158801U (en) | 1987-10-08 | 1987-10-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15483087U JPH0158801U (en) | 1987-10-08 | 1987-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0158801U true JPH0158801U (en) | 1989-04-13 |
Family
ID=31431915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15483087U Pending JPH0158801U (en) | 1987-10-08 | 1987-10-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0158801U (en) |
-
1987
- 1987-10-08 JP JP15483087U patent/JPH0158801U/ja active Pending