JPS56167969A - Fluid power reducing structure of spool valve - Google Patents

Fluid power reducing structure of spool valve

Info

Publication number
JPS56167969A
JPS56167969A JP6972580A JP6972580A JPS56167969A JP S56167969 A JPS56167969 A JP S56167969A JP 6972580 A JP6972580 A JP 6972580A JP 6972580 A JP6972580 A JP 6972580A JP S56167969 A JPS56167969 A JP S56167969A
Authority
JP
Japan
Prior art keywords
spool
fluid power
shaft
spool valve
notched part
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
Application number
JP6972580A
Other languages
Japanese (ja)
Other versions
JPH0114469B2 (en
Inventor
Shizuo Matsumura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
Kayaba Industry Co Ltd
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 Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP6972580A priority Critical patent/JPS56167969A/en
Publication of JPS56167969A publication Critical patent/JPS56167969A/en
Publication of JPH0114469B2 publication Critical patent/JPH0114469B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Multiple-Way Valves (AREA)

Abstract

PURPOSE: To reduce the fluid power which operates in the spool closing direction by forming a plurality of auxiliary passages which flow oil into a spool passage, at equal intervals in the circumferential direction of a spool, except on the sectional surface of the shaft during the time from opening to closing the spool valve.
CONSTITUTION: From the end surface 3 of the rand 2 of a spool 1, a notched part C is formed by forming cut parts in parallel, having the shaft line interposed, across the end surface 3. As the notched part C is formed except on the sectional surface of the shaft, the notched part C does not intersect with the nose part 8, and is deeply concaved for the opening on the rand peripheral surface side. Therefore, the effluence angle θ of the liquid for the spool shaft line can be increased, and the fluid power can be reduced.
COPYRIGHT: (C)1981,JPO&Japio
JP6972580A 1980-05-26 1980-05-26 Fluid power reducing structure of spool valve Granted JPS56167969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6972580A JPS56167969A (en) 1980-05-26 1980-05-26 Fluid power reducing structure of spool valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6972580A JPS56167969A (en) 1980-05-26 1980-05-26 Fluid power reducing structure of spool valve

Publications (2)

Publication Number Publication Date
JPS56167969A true JPS56167969A (en) 1981-12-23
JPH0114469B2 JPH0114469B2 (en) 1989-03-13

Family

ID=13411095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6972580A Granted JPS56167969A (en) 1980-05-26 1980-05-26 Fluid power reducing structure of spool valve

Country Status (1)

Country Link
JP (1) JPS56167969A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60125470A (en) * 1983-12-08 1985-07-04 Kayaba Ind Co Ltd Fluid force reducing structure of spool valve
JPH02288906A (en) * 1990-04-12 1990-11-28 Komatsu Ltd Pilot valve for control of poppet valve
DE112016000086B4 (en) 2016-05-31 2018-12-27 Komatsu Ltd. SHIFT VALVE AND WORK VEHICLE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5578867A (en) * 1978-12-08 1980-06-13 Diesel Kiki Co Ltd Notch forming method for passage control valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5578867A (en) * 1978-12-08 1980-06-13 Diesel Kiki Co Ltd Notch forming method for passage control valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60125470A (en) * 1983-12-08 1985-07-04 Kayaba Ind Co Ltd Fluid force reducing structure of spool valve
JPH0364745B2 (en) * 1983-12-08 1991-10-08 Kayaba Industry Co Ltd
JPH02288906A (en) * 1990-04-12 1990-11-28 Komatsu Ltd Pilot valve for control of poppet valve
DE112016000086B4 (en) 2016-05-31 2018-12-27 Komatsu Ltd. SHIFT VALVE AND WORK VEHICLE
US10422437B2 (en) 2016-05-31 2019-09-24 Komatsu Ltd Spool valve, operation device, and work vehicle

Also Published As

Publication number Publication date
JPH0114469B2 (en) 1989-03-13

Similar Documents

Publication Publication Date Title
JPS57949A (en) Servo-valve
JPS56167969A (en) Fluid power reducing structure of spool valve
JPS57183553A (en) Intake device of 4-cycle engine
JPS5752603A (en) Leakage preventing device in turbine
JPS57163706A (en) Multiple cylinder equipment
JPS5382933A (en) Variable venturi type carburetor
JPS5639372A (en) Oil switching valve with stopper
JPS5729861A (en) Hydraulic pressure reduction structure of spool valve
JPS55125910A (en) Chamfering apparatus
JPS56163966A (en) Rotary servo valve
JPS56156563A (en) Form of notch reducing fluid force of spool valve
JPS5620806A (en) Fluid control system
JPS57208364A (en) Fluid flow rate regulating valve
JPS5660774A (en) Conical rotary valve
JPS5620803A (en) Hydraulic circuit
JPS5322931A (en) Operation method of hydraulic machinery
JPS579365A (en) Plate type regulating valve
SU620686A2 (en) Hydraulic distributor
JPS53100303A (en) Internal structure for steps in axial-flow fluid machine
JPS55103170A (en) Suction valve of reciprocating compressor
JPS5572693A (en) Pump counterflow preventing device
JPS55164798A (en) Centrifugal pump
JPS53115919A (en) Oil feed nozzle
JPS57205273A (en) Power steering apparatus
JPS546179A (en) Apparatus for reducing windage loss of high-speed rotary bodies