Title:
PRESSURE CONTROL VALVE
Document Type and Number:
Japanese Patent JPS63236110
Kind Code:
A
Abstract:
PURPOSE:To compensate the fluid force by providing the contraction to a spool valve to ensure the affection of the pressure of the contraction produced at the cylinder side against one of both pressure receiving sides of the spool valve acting in the direction opposite to the electromagnetic force of a solenoid and also to ensure the affection of the pressure of the contraction produced at the side opposite to the cylinder against the other pressure receiving side of the spool valve respectively. CONSTITUTION:A hole 63 serving as the contraction is provided to a spool valve 53 so that the fluid force is compensated. In other words, the hole 63 is formed at a land part 58 of the valve 53 where the oil pressure passes. Then, the axial force is produced at the valve 53 against the fluid force accordant with the pressure difference if produced between the front and back positions of the hole 63. As a result, the influence of the fluid force can be minimized and therefore the current proportion control characteristics of a pressure control valve 51 can be secured. Furthermore, the response properties are extremely improved with no change of the target control pressure.
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Inventors:
KOMATSU KOICHI
AKAIWA MICHIRO
AKAIWA MICHIRO
Application Number:
JP7091087A
Publication Date:
October 03, 1988
Filing Date:
March 24, 1987
Export Citation:
Assignee:
ATSUGI MOTOR PARTS CO LTD
International Classes:
B60G17/00; B60G17/015; B60G17/056; F15B13/044; F16K17/06; G05D16/10; (IPC1-7): B60G17/00; F15B13/044; F16K17/06; G05D16/10
Attorney, Agent or Firm:
Teruo Aoki