Solenoid valve
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United States of America Patent
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May 3, 2016
Issued Date -
N/A
app pub date -
May 15, 2012
filing date -
Jul 14, 2011
priority date (Note) -
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Abstract
A solenoid is operated so as to be switched between a closed valve state in which the valve element is brought into contact with the valve seat by application of a spring force and an open valve state in which an electric current is passed through a coil (16) and the valve element is separated from the valve seat by a magnetic force. A fixed iron core (15) has a U-shape, and magnetically-attracting surfaces (26) are provided on respective ends thereof. A resin case (17) into which the fixed iron core (15) and the coil (16) are incorporated is provided with a bottom surface (27) having openings through which the magnetically-attracting surfaces (26) are exposed to the outside. A case contact surface (51) protruding toward a movable element in comparison with the magnetically-attracting surfaces (26) is formed on the bottom surface (27) of the case (17). Resin films (52) are provided on the respective magnetically-attracting surfaces (26).
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