WO1990010901A1 - Variable pressure control valve - Google Patents

Variable pressure control valve

Info

Publication number
WO1990010901A1
WO1990010901A1 PCT/JP1990/000317 JP9000317W WO9010901A1 WO 1990010901 A1 WO1990010901 A1 WO 1990010901A1 JP 9000317 W JP9000317 W JP 9000317W WO 9010901 A1 WO9010901 A1 WO 9010901A1
Authority
WO
WIPO (PCT)
Prior art keywords
control valve
pressure control
piston
variable pressure
pilot
Prior art date
Application number
PCT/JP1990/000317
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Toshiro Takano
Sadao Nunotani
Naoki Ishizaki
Original Assignee
Kabushiki Kaisha Komatsu Seisakusho
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kabushiki Kaisha Komatsu Seisakusho filed Critical Kabushiki Kaisha Komatsu Seisakusho
Priority to EP90904431A priority Critical patent/EP0455811B1/en
Priority to KR1019910701077A priority patent/KR920701890A/ko
Priority to DE69022032T priority patent/DE69022032T2/de
Publication of WO1990010901A1 publication Critical patent/WO1990010901A1/ja

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/14—Control of fluid pressure with auxiliary non-electric power
    • G05D16/18—Control of fluid pressure with auxiliary non-electric power derived from an external source
    • G05D16/187—Control of fluid pressure with auxiliary non-electric power derived from an external source using pistons within the main valve
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/107—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger with a spring-loaded piston in combination with a spring-loaded slideable obturator that move together over range of motion during normal operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7905—Plural biasing means

Definitions

  • the pressure of the hydraulic oil flowing from the hydraulic oil inflow port can be variably set by introducing the pilot pressure.
  • the present invention relates to a variable pressure control valve configured as described above.
  • variable pressure control valve for example, the one shown in FIG. 1 is conventionally known.
  • variable pressure control valve which can variably set the pressure of hydraulic fluid flowing from a hydraulic fluid inflow port 1 by increasing or decreasing a pressure contact force of the hydraulic fluid into a valve seat. .
  • the compression panel is a panel with a large load.3
  • the body itself is directly compressed by the pilot piston 4 and the pilot piston 4 acts on the pilot piston 4.
  • the pressure P p is typically 30
  • the pilot piston has four large forces, and the whole becomes large. Specifically, assuming that the diameter of the pressurized oil inflow port 1 is d and the diameter of the pilot piston 4 is 4, the cell load W of 3 is
  • P is the pressure in the hydraulic oil inflow port 1.
  • the diameter of the piston 4 needs to be large enough to support the set spring load.
  • the present invention has been made in view of the above circumstances. The purpose is to use a relatively small pilot piston to solve the above-mentioned problems in the prior art. It is an object of the present invention to provide a variable pressure control valve which is compact as a whole.
  • a spool pressed against a valve seat of a pressure oil inflow port by a spring force of a compression spring, and A stationary panel support for supporting the base end of the valve, and a pipe lock on the other side so as to urge the spool toward the valve seat on one side.
  • a variable pressure control valve having an auxiliary compression panel pressed by a top piston is provided.
  • the force corresponding to the increase in the pressure to be set by the corrected piston panel is set. I just need to press it.
  • the force that can reduce the pressing force of the pilot piston and the pressure receiving area of the pilot piston can be reduced.
  • the diameter of the pilot piston can be made relatively small, and the entire variable pressure control valve can be made compact.
  • FIG. 1 is an explanatory view schematically showing a structure of a conventional example
  • FIG. 2 is an explanatory view schematically showing a structure of a specific example of the present invention.
  • the compression panel 3 is interposed between one end of the stationary stationary spring receiver 5 and the base end of the spool 2 and the compression panel is compressed.
  • An auxiliary compression spring 6 with a small panel load is interposed between the base end of the spool 2 and the distal end of the pilot piston 4, and this auxiliary compression spring 6 is It is configured so that it is compressed by pressing it with the push button 4.
  • the panel 3 having a large compression spring load is supported by the fixed spring receiver 5, and the auxiliary spring 6 having a small compression spring load is provided by the pilot. Since the pressure of the hydraulic oil flowing from the hydraulic oil inflow port 1 can be set to a high pressure by being compressed by being pressed by the piston 4, the piston Since the pressing force F of the ton 4 can be small, the pressure receiving area of the piston 4 can be reduced to make the diameter smaller.
  • the compression panel load W 2 of the auxiliary compression panel 6 is ⁇

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Control Of Fluid Pressure (AREA)
  • Fluid-Driven Valves (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
PCT/JP1990/000317 1989-03-10 1990-03-09 Variable pressure control valve WO1990010901A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP90904431A EP0455811B1 (en) 1989-03-10 1990-03-09 Variable pressure control valve
KR1019910701077A KR920701890A (ko) 1989-03-10 1990-03-09 가변 압력 제어 밸브
DE69022032T DE69022032T2 (de) 1989-03-10 1990-03-09 Regelventil für veränderliche drücke.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1/26620U 1989-03-10
JP1989026620U JPH0731288Y2 (ja) 1989-03-10 1989-03-10 可変圧力制御弁

Publications (1)

Publication Number Publication Date
WO1990010901A1 true WO1990010901A1 (en) 1990-09-20

Family

ID=12198518

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/000317 WO1990010901A1 (en) 1989-03-10 1990-03-09 Variable pressure control valve

Country Status (6)

Country Link
US (1) US5234028A (US06252093-20010626-C00008.png)
EP (1) EP0455811B1 (US06252093-20010626-C00008.png)
JP (1) JPH0731288Y2 (US06252093-20010626-C00008.png)
KR (1) KR920701890A (US06252093-20010626-C00008.png)
DE (1) DE69022032T2 (US06252093-20010626-C00008.png)
WO (1) WO1990010901A1 (US06252093-20010626-C00008.png)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3065601B1 (ja) * 1999-02-26 2000-07-17 古河機械金属株式会社 圧力制御弁
DE10247669B4 (de) * 2001-10-29 2011-05-19 Ixetic Bad Homburg Gmbh Ventilanordnung
CA2371511A1 (en) * 2002-02-13 2003-08-13 Rheal Duprey Dual function hydraulic valve and circuit
SE533560C2 (sv) * 2009-03-06 2010-10-26 Aga Ab Övertrycks- och avluftningsventil för en kolsyresättningsanordning.
JP5585817B2 (ja) * 2009-03-31 2014-09-10 アイシン精機株式会社 リリーフバルブ
US8726934B2 (en) * 2010-05-06 2014-05-20 Illinois Tool Works Inc. Multi-mode pressure relief valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877720U (US06252093-20010626-C00008.png) * 1971-12-24 1973-09-25
JPS5946813B2 (ja) * 1977-05-25 1984-11-15 川崎重工業株式会社 クラツチ着脱用油圧バルブ
JPS6298409A (ja) * 1985-10-24 1987-05-07 Diesel Kiki Co Ltd 電磁比例圧力制御弁
JPS6289007U (US06252093-20010626-C00008.png) * 1985-11-19 1987-06-06

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017897A (en) * 1956-08-29 1962-01-23 Sertec Soc D Etudes Et De Rech Valve means for controlling the pressure of a fluid system
GB911392A (en) * 1959-05-25 1962-11-28 Garrett Corp Improvements relating to fluid pressure regulating and shut-off valve mechanism
US2944564A (en) * 1959-05-29 1960-07-12 Jr Thomas M Pettey Pressure relief valve with remote calibration change
US3442502A (en) * 1965-06-04 1969-05-06 Mack Trucks Air spring suspension for vehicles
JPS46686Y1 (US06252093-20010626-C00008.png) * 1967-10-31 1971-01-11
DE2034665A1 (de) * 1970-07-13 1972-01-20 Rexroth Gmbh G L Druckverhältnisventil
JPH0325206Y2 (US06252093-20010626-C00008.png) * 1980-05-19 1991-05-31
DE3342901A1 (de) * 1983-11-26 1985-06-27 Weber und Springmann GmbH, 3200 Hildesheim Gegendruck-regelventil
US4648423A (en) * 1985-07-22 1987-03-10 Ford Motor Company Clutch-pressure control valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877720U (US06252093-20010626-C00008.png) * 1971-12-24 1973-09-25
JPS5946813B2 (ja) * 1977-05-25 1984-11-15 川崎重工業株式会社 クラツチ着脱用油圧バルブ
JPS6298409A (ja) * 1985-10-24 1987-05-07 Diesel Kiki Co Ltd 電磁比例圧力制御弁
JPS6289007U (US06252093-20010626-C00008.png) * 1985-11-19 1987-06-06

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0455811A4 *

Also Published As

Publication number Publication date
KR920701890A (ko) 1992-08-12
DE69022032D1 (de) 1995-10-05
JPH0731288Y2 (ja) 1995-07-19
US5234028A (en) 1993-08-10
DE69022032T2 (de) 1996-02-01
EP0455811A4 (en) 1993-02-24
EP0455811B1 (en) 1995-08-30
EP0455811A1 (en) 1991-11-13
JPH02119713U (US06252093-20010626-C00008.png) 1990-09-27

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