JPS6230071U - - Google Patents
Info
- Publication number
- JPS6230071U JPS6230071U JP12287685U JP12287685U JPS6230071U JP S6230071 U JPS6230071 U JP S6230071U JP 12287685 U JP12287685 U JP 12287685U JP 12287685 U JP12287685 U JP 12287685U JP S6230071 U JPS6230071 U JP S6230071U
- Authority
- JP
- Japan
- Prior art keywords
- port
- hydraulic oil
- spool valve
- land
- pressure
- 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
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 claims 7
- 239000003921 oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 1
Landscapes
- Safety Valves (AREA)
Description
第１図は本考案の一実施例を含む油圧制御回路
の要部を示す図である。第２図は第１図の第２調
圧弁２０を詳しく示す図である。第３図は第２図
の油圧調圧弁２０の作動を説明する特性図である
。第４図は従来の第２調圧弁を示す第２図に相当
する図である。第５図は第４図に示す従来の第２
調圧弁の作動を説明する特性図である。
２０：第２調圧弁（調圧弁）、２２：供給ポー
ト、２４：潤滑油ポート、２６：ドレンポート、
２８：スプール弁子、３２：制御室、３８：第１
ランド、４０：第２ランド、４２：環状凹溝、４
４：第３ランド。
FIG. 1 is a diagram showing the main parts of a hydraulic control circuit including an embodiment of the present invention. FIG. 2 is a diagram showing the second pressure regulating valve 20 of FIG. 1 in detail. FIG. 3 is a characteristic diagram illustrating the operation of the hydraulic pressure regulating valve 20 of FIG. 2. FIG. 4 is a diagram corresponding to FIG. 2 showing a conventional second pressure regulating valve. Figure 5 shows the conventional 2nd type shown in Figure 4.
FIG. 3 is a characteristic diagram illustrating the operation of a pressure regulating valve. 20: Second pressure regulating valve (pressure regulating valve), 22: Supply port, 24: Lubricating oil port, 26: Drain port,
28: Spool valve, 32: Control room, 38: First
Land, 40: Second land, 42: Annular groove, 4
4: Third land.
Claims (1)
油の一部を流出させる第１ポートと、該作動油の
他の一部を流出させる第２ポートと、該第１ポー
トおよび第２ポートと前記供給ポートとの間を開
閉するスプール弁子と、該スプール弁子を開弁方
向へ付勢するスプリングと、該スプリングの付勢
力と対向する方向の推力が生じるように前記スプ
ール弁子に前記作動油を作用させ、該作動油の圧
力の増加とともに該スプール弁子を閉弁方向へ移
動させる制御室とを備え、前記作動油の圧力に応
じて前記第１ポートおよび第２ポートから流出さ
せる油量を増加させることにより、前記供給ポー
トに供給される作動油の圧力を所定の圧力に調圧
する形式の調圧弁において、 前記スプール弁子の移動方向において前記供給
ポートを前記第１ポートと第２ポートとの間に設
ける一方、該スプール弁子に、該スプール弁子が
前記閉弁方向に移動するにともなつて該供給ポー
トと第１ポートとの間、および該供給ポートと該
第２ポートとの間をそれぞれ閉じる第１ランドお
よび第２ランドを設けたことを特徴とする調圧弁
。 (2) 前記スプール弁子は、前記第２ランドから
所定距離離隔した第３ランドを有するとともに、
該第２ランドと第３ランドとの間に前記第２ポー
トと連通し、底面が円弧状に凹んだ環状凹溝が形
成されたものである実用新案登録請求の範囲第１
項に記載の調圧弁。[Claims for Utility Model Registration] (1) A supply port through which hydraulic oil is supplied, a first port through which a portion of the hydraulic oil flows out, and a second port through which another portion of the hydraulic oil flows out. , a spool valve that opens and closes between the first port and the second port and the supply port, a spring that biases the spool valve in the opening direction, and a thrust in a direction opposite to the biasing force of the spring. a control chamber for causing the hydraulic oil to act on the spool valve element so that the pressure of the hydraulic oil increases, and for moving the spool valve element in the valve closing direction as the pressure of the hydraulic oil increases, In a pressure regulating valve of a type that regulates the pressure of hydraulic oil supplied to the supply port to a predetermined pressure by increasing the amount of oil flowing out from the first port and the second port, in the moving direction of the spool valve. The supply port is provided between the first port and the second port, and the spool valve is provided with a connection between the supply port and the first port as the spool valve moves in the valve closing direction. A pressure regulating valve characterized in that a first land and a second land are provided for closing the space between the supply port and the second port, respectively. (2) The spool valve has a third land spaced a predetermined distance from the second land, and
Utility model registration claim 1, wherein an annular groove having an arcuate bottom surface and communicating with the second port is formed between the second land and the third land.
Pressure regulating valve described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12287685U JPS6230071U (en) | 1985-08-09 | 1985-08-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12287685U JPS6230071U (en) | 1985-08-09 | 1985-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6230071U true JPS6230071U (en) | 1987-02-23 |
Family
ID=31013474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12287685U Pending JPS6230071U (en) | 1985-08-09 | 1985-08-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6230071U (en) |
-
1985
- 1985-08-09 JP JP12287685U patent/JPS6230071U/ja active Pending
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