JPH0439476U - - Google Patents
Info
- Publication number
- JPH0439476U JPH0439476U JP8067290U JP8067290U JPH0439476U JP H0439476 U JPH0439476 U JP H0439476U JP 8067290 U JP8067290 U JP 8067290U JP 8067290 U JP8067290 U JP 8067290U JP H0439476 U JPH0439476 U JP H0439476U
- Authority
- JP
- Japan
- Prior art keywords
- port
- pressure
- valve
- pressure receiving
- spring
- 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
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の実施例を示す安全弁の断面図
、第２図は模式図、第３図は油圧モータの油圧回
路図、第４図は従来の安全弁の断面図である。
３２は弁、３４はピストン、３５はフリーピス
トン、３９はバネ、４２はバネ。
FIG. 1 is a sectional view of a safety valve showing an embodiment of the present invention, FIG. 2 is a schematic diagram, FIG. 3 is a hydraulic circuit diagram of a hydraulic motor, and FIG. 4 is a sectional view of a conventional safety valve. 32 is a valve, 34 is a piston, 35 is a free piston, 39 is a spring, and 42 is a spring.
Claims (1)
ネ３９で遮断位置に保持し、その弁３２をポート
Ａの圧力及びポートＢの圧力で連通方向に押すポ
ートＡ側の受圧部とポートＢ側の受圧部を設け、
かつ両者の受圧面積を同一とし、前記弁３２内に
、ポートＡとポートＢの圧力差によつて摺動して
低圧側の受圧面積を小さくするフリーピストン３
５及びバネ４２で押されて連通作動開始圧力を低
圧とするピストン３４を設けたことを特徴とする
安全弁。The valve 32 that communicates and shuts off port A and port B is held in the shutoff position by a spring 39, and the pressure receiving part on the port A side and the port B side push the valve 32 in the communication direction with the pressure of port A and the pressure of port B. A pressure receiving part is provided,
A free piston 3 is provided in the valve 32, which has the same pressure receiving area and slides due to the pressure difference between ports A and B to reduce the pressure receiving area on the low pressure side.
5 and a piston 34 which is pushed by a spring 42 and lowers the communication operation start pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8067290U JPH0439476U (en) | 1990-07-31 | 1990-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8067290U JPH0439476U (en) | 1990-07-31 | 1990-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0439476U true JPH0439476U (en) | 1992-04-03 |
Family
ID=31625944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8067290U Pending JPH0439476U (en) | 1990-07-31 | 1990-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439476U (en) |
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1990
- 1990-07-31 JP JP8067290U patent/JPH0439476U/ja active Pending