JPH0198975U - - Google Patents
Info
- Publication number
- JPH0198975U JPH0198975U JP19648287U JP19648287U JPH0198975U JP H0198975 U JPH0198975 U JP H0198975U JP 19648287 U JP19648287 U JP 19648287U JP 19648287 U JP19648287 U JP 19648287U JP H0198975 U JPH0198975 U JP H0198975U
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- main valve
- pressure
- chamber
- pressure chamber
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Pressure Circuits (AREA)
- Safety Valves (AREA)
Description
第1図は本考案の実施例を示す油圧回路図、第
2図はクロスオーバリリーフ弁を拡大して示す縦
断面図、第3図は一次側圧力と時間との関係を示
す特性線図である。
1…油圧モータ、2…油圧ポンプ、3…タンク
、4A,4B…主管路、5…方向切換弁、6…ブ
レーキ弁、9,10…クロスオーバリリーフ弁(
圧力制御弁)、11…弁本体、11A…主弁体摺
動穴、11B…油穴、12…ばね室、13…弁座
部材(主弁座)、15…ガイド部材、15A…小
径筒部、16…主弁体、17…圧力設定用ばね、
18…副弁体、19…弱ばね、20…第1の圧力
室、21…ピストン、22…第2の圧力室、23
…補助ばね、24…第1の絞り油路、25…第2
の絞り油路、26…油路、28…ドレン油路。
Fig. 1 is a hydraulic circuit diagram showing an embodiment of the present invention, Fig. 2 is a vertical cross-sectional view showing an enlarged cross-over relief valve, and Fig. 3 is a characteristic diagram showing the relationship between primary side pressure and time. be. DESCRIPTION OF SYMBOLS 1... Hydraulic motor, 2... Hydraulic pump, 3... Tank, 4A, 4B... Main pipe line, 5... Directional switching valve, 6... Brake valve, 9, 10... Crossover relief valve (
Pressure control valve), 11...Valve body, 11A...Main valve body sliding hole, 11B...Oil hole, 12...Spring chamber, 13...Valve seat member (main valve seat), 15...Guide member, 15A...Small diameter cylindrical part , 16... Main valve body, 17... Pressure setting spring,
18...Sub-valve body, 19...Weak spring, 20...First pressure chamber, 21...Piston, 22...Second pressure chamber, 23
...Auxiliary spring, 24...First throttle oil path, 25...Second
throttle oil passage, 26...oil passage, 28...drain oil passage.
Claims (1)
た主弁体摺動穴を挟んで一側が主弁座となり他側
がばね室となつた弁本体と、該弁本体の主弁体摺
動穴に摺動可能に挿嵌された主弁体と、前記弁本
体のばね室内に配設され、該主弁体を前記主弁座
に着座するように付勢する圧力設定用ばねとから
なる圧力制御弁において、前記弁本体のばね室側
に設けられた筒状のガイド部材と、前記主弁体に
離着座するように前記弁本体のばね室側に設けら
れ、一側が主弁体内に第1の圧力室を画成し、他
側が該ガイド部材に摺動可能に挿嵌されて該第1
の圧力室よりも大なる受圧面積を有する第2の圧
力室を画成した副弁体と、前記主弁体に作用する
一次側圧力を第1の圧力室に導くように、該主弁
体に穿設された第1の絞り油路と、前記第1の圧
力室内の圧力を第2の圧力室に導くように、前記
副弁体に穿設され、該第1の絞り油路よりも小な
る流路面積を有する第2の絞り油路と、前記弁本
体のばね室を二次側に連通させるべく、該弁本体
に穿設されたドレン油路とから構成したことを特
徴とする圧力制御弁。 (2) 前記ガイド部材内には第2の圧力室内を拡
大させるためのピストンを摺動可能に設けてなる
実用新案登録請求の範囲(1)項記載の圧力制御弁
。[Scope of Claim for Utility Model Registration] (1) A valve body consisting of a cylindrical body with a main valve seat on one side and a spring chamber on the other side across the main valve body sliding hole formed in the axially intermediate portion. , a main valve body slidably inserted into a main valve body sliding hole of the valve body; and a main valve body disposed within a spring chamber of the valve body so as to seat the main valve body on the main valve seat. In the pressure control valve, the pressure control valve includes a pressure setting spring that is biased, and a cylindrical guide member provided on the spring chamber side of the valve body, and a cylindrical guide member provided on the spring chamber side of the valve body so as to be seated on and off the main valve body. one side defines a first pressure chamber within the main valve body, and the other side is slidably inserted into the guide member and defines the first pressure chamber within the main valve body.
a secondary valve element defining a second pressure chamber having a larger pressure receiving area than the pressure chamber; and a main valve element configured to guide the primary side pressure acting on the main valve element to the first pressure chamber. a first throttle oil passage bored in the auxiliary valve body so as to guide the pressure in the first pressure chamber to a second pressure chamber; The valve body is characterized by being composed of a second throttle oil passage having a small flow path area and a drain oil passage bored in the valve body so as to communicate the spring chamber of the valve body with the secondary side. Pressure control valve. (2) The pressure control valve according to claim (1), wherein a piston for expanding the inside of the second pressure chamber is slidably provided in the guide member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19648287U JPH0451264Y2 (en) | 1987-12-24 | 1987-12-24 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19648287U JPH0451264Y2 (en) | 1987-12-24 | 1987-12-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0198975U true JPH0198975U (en) | 1989-07-03 |
JPH0451264Y2 JPH0451264Y2 (en) | 1992-12-02 |
Family
ID=31487089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19648287U Expired JPH0451264Y2 (en) | 1987-12-24 | 1987-12-24 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0451264Y2 (en) |
-
1987
- 1987-12-24 JP JP19648287U patent/JPH0451264Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH0451264Y2 (en) | 1992-12-02 |
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