JPH0446272U - - Google Patents
Info
- Publication number
- JPH0446272U JPH0446272U JP8743590U JP8743590U JPH0446272U JP H0446272 U JPH0446272 U JP H0446272U JP 8743590 U JP8743590 U JP 8743590U JP 8743590 U JP8743590 U JP 8743590U JP H0446272 U JPH0446272 U JP H0446272U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- port
- free piston
- chamber
- receiving area
- 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
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000011148 porous material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Landscapes
- Safety Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図、第２図は本考案の第１実施例を示す断
面図、第３図、第４図は第２実施例の断面図、第
５図は流体ブレーキ装置の一例を示す断面図、第
６図は先に出願した両方向作動リリーフ弁の断面
図、第７図はそのフリーピストンの側面図、第８
図、第９図は細孔から受圧室に流入する圧油の説
明図、第１０図はリリーフ開始圧力を示す図表で
ある。
１２は第１ポート、１３は第２ポート、２５は
フリーピストン、２８は受圧室、２９は細孔、３
０はバネ、４２は背圧室、４３はシヤトルピスト
ン。
1 and 2 are sectional views showing a first embodiment of the present invention, FIGS. 3 and 4 are sectional views of a second embodiment, and FIG. 5 is a sectional view showing an example of a fluid brake device, Fig. 6 is a sectional view of the previously applied bidirectional operating relief valve, Fig. 7 is a side view of its free piston, and Fig. 8
FIG. 9 is an explanatory diagram of the pressure oil flowing into the pressure receiving chamber from the pore, and FIG. 10 is a chart showing the relief starting pressure. 12 is a first port, 13 is a second port, 25 is a free piston, 28 is a pressure receiving chamber, 29 is a pore, 3
0 is a spring, 42 is a back pressure chamber, and 43 is a shuttle piston.
Claims (1)
遮断するフリーピストン２５をバネ３０で遮断位
置に保持し、第１・第２ポート１２，１３の高圧
油で連通方向移動するようにし、該フリーピスト
ン２５を遮断方向に押す受圧室２８を細孔２９を
経て第１ポート１２側に開口し、さらにフリーピ
ストン２５を遮断方向に押す背圧室４２を形成す
ると共に、その背圧室４２に低圧側の圧油を導入
するシヤトルピストン４３を前記フリーピストン
２５内に設け、前記フリーピストン２５の第１ポ
ート１２側の圧力が作用する受圧面積と第２ポー
ト１３側の圧力が作用する受圧面積と前記背圧室
４２の受圧面積を同一としたことを特徴とする両
方向作動リリーフ弁。 Connecting the first port 12 side and the second port 13 side
The free piston 25 to be cut off is held in the cutoff position by a spring 30, and is moved in the communication direction by high pressure oil in the first and second ports 12 and 13, and the pressure receiving chamber 28 that pushes the free piston 25 in the cutoff direction is moved into a small hole. 29 to the first port 12 side, and forms a back pressure chamber 42 that pushes the free piston 25 in the blocking direction, and also introduces low-pressure side pressure oil into the back pressure chamber 42. It is provided in the piston 25, and the pressure receiving area on which the pressure on the first port 12 side of the free piston 25 acts, the pressure receiving area on which the pressure on the second port 13 side acts, and the pressure receiving area of the back pressure chamber 42 are made the same. A bidirectional operating relief valve featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8743590U JP2538161Y2 (en) | 1990-08-23 | 1990-08-23 | Two-way relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8743590U JP2538161Y2 (en) | 1990-08-23 | 1990-08-23 | Two-way relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0446272U true JPH0446272U (en) | 1992-04-20 |
| JP2538161Y2 JP2538161Y2 (en) | 1997-06-11 |
Family
ID=31819774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8743590U Expired - Lifetime JP2538161Y2 (en) | 1990-08-23 | 1990-08-23 | Two-way relief valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538161Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007051689A (en) * | 2005-08-18 | 2007-03-01 | Tgk Co Ltd | Differential pressure regulating valve |
| JP2016035237A (en) * | 2014-08-04 | 2016-03-17 | 愛三工業株式会社 | PCV valve |
-
1990
- 1990-08-23 JP JP8743590U patent/JP2538161Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007051689A (en) * | 2005-08-18 | 2007-03-01 | Tgk Co Ltd | Differential pressure regulating valve |
| JP2016035237A (en) * | 2014-08-04 | 2016-03-17 | 愛三工業株式会社 | PCV valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2538161Y2 (en) | 1997-06-11 |
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