NORMALLY CLOSED SOLENOID VALVE

PROBLEM TO BE SOLVED: To provide a normally closed solenoid valve, capable of reducing noise such as hitting sound in the valve opening motion and reducing the energy consumption. SOLUTION: As a current is carried to a coil unit 13, a movable core 28 is attracted toward a fixed core 25. Then, a buff...

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Bibliographic Details
Main Authors MASUDA NAOKI, OI TAKESHI
Format Patent
LanguageEnglish
Published 03.12.2003
Edition7
Subjects
ACTUATING-FLOATS
ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL
BLASTING
BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
COCKS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES
TAPS
THERMAL INSULATION IN GENERAL
TRANSPORTING
VALVES
VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF
VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
VEHICLES IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a normally closed solenoid valve, capable of reducing noise such as hitting sound in the valve opening motion and reducing the energy consumption. SOLUTION: As a current is carried to a coil unit 13, a movable core 28 is attracted toward a fixed core 25. Then, a buffer member 29 abuts to the fixed core 25 against the spring load of a first return spring 30, and then, the movable core 28 abuts to the fixed core 25 against the spring load of a second return spring 32 which is larger than the spring load of the first return spring 30 while the buffer member 29 abuts to the fixed core 25 to open a valve. COPYRIGHT: (C)2004,JPO
Bibliography:Application Number: JP20020152965