JPS56156563A - Form of notch reducing fluid force of spool valve - Google Patents

Form of notch reducing fluid force of spool valve

Info

Publication number
JPS56156563A
JPS56156563A JP6111580A JP6111580A JPS56156563A JP S56156563 A JPS56156563 A JP S56156563A JP 6111580 A JP6111580 A JP 6111580A JP 6111580 A JP6111580 A JP 6111580A JP S56156563 A JPS56156563 A JP S56156563A
Authority
JP
Japan
Prior art keywords
notch
fluid force
bosom
oil
flow rate
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
Application number
JP6111580A
Other languages
Japanese (ja)
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 JP6111580A priority Critical patent/JPS56156563A/en
Publication of JPS56156563A publication Critical patent/JPS56156563A/en
Pending legal-status Critical Current

Links

Landscapes

  • Multiple-Way Valves (AREA)

Abstract

PURPOSE: To reduce fluid force functioning to a spool in cases of small flow rate and large flow rate by inclining a bosom surface of a notch and forming the notch in a slot-shaped groove.
CONSTITUTION: When small flow rate flows into a notch (a), oil also flows into the deepened bosom side because a bosom surface 5 is inclined and a bosom of the notch (a) is deepened, and fluid force can be reduced when an angle of inflow θ1 increases. The fluid force is apt to increase with the augmentation of the opening of a land circumferential surface opening section 3, but oil is focused when a fluid passes through the notch a because the notch (a) is formed in a slot-shaped groove, and the considerable velocity of flow V2 is obtained. When an angle of inclination of a guide surface 4 is selected properly, fluid force F1 generated by inflow oil and fluid force F2 generated by outflow oil are offset each other, and the fluid force functioning to a spool is reduced.
COPYRIGHT: (C)1981,JPO&Japio
JP6111580A 1980-05-08 1980-05-08 Form of notch reducing fluid force of spool valve Pending JPS56156563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6111580A JPS56156563A (en) 1980-05-08 1980-05-08 Form of notch reducing fluid force of spool valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6111580A JPS56156563A (en) 1980-05-08 1980-05-08 Form of notch reducing fluid force of spool valve

Publications (1)

Publication Number Publication Date
JPS56156563A true JPS56156563A (en) 1981-12-03

Family

ID=13161749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6111580A Pending JPS56156563A (en) 1980-05-08 1980-05-08 Form of notch reducing fluid force of spool valve

Country Status (1)

Country Link
JP (1) JPS56156563A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667930A (en) * 1986-06-09 1987-05-26 Caterpillar Inc. Metering slot configuration for a valve spool
JPS62162464U (en) * 1986-04-04 1987-10-15
DE112016000086B4 (en) 2016-05-31 2018-12-27 Komatsu Ltd. SHIFT VALVE AND WORK VEHICLE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62162464U (en) * 1986-04-04 1987-10-15
US4667930A (en) * 1986-06-09 1987-05-26 Caterpillar Inc. Metering slot configuration for a valve spool
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

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