JP2003269642A5 - - Google Patents

Claims (6)

In the electromagnetic valve that opens and closes the valve body by electromagnetic means and opens and closes the valve port formed in the valve housing,
An O-ring made of a rubber-like elastic body is attached to the outer periphery of the tip of the valve body, and the outer peripheral surface of the O-ring comes into contact with a corner edge of an annular valve seat defined around the valve port. solenoid valve, wherein a tightening seal is made. The solenoid valve according to claim 1, further comprising a stopper for limiting a movement amount of the valve body in a valve closing direction from a valve position where an outer peripheral surface of the O-ring is in contact with a corner edge of the valve seat portion. The O-ring abuts against the corner edge on the inner peripheral side of the valve seat portion, the stopper includes a stopper surface formed on the valve port side from the corner edge, and a tip of the valve body facing the stopper surface. The solenoid valve according to claim 2, wherein the valve body is restricted from moving in a valve closing direction by abutting a tip surface of the valve body against the stopper surface. The solenoid valve according to claim 2 or 3, wherein the O-ring is made of non-sulfur vulcanized rubber. The solenoid valve according to claim 4, wherein the solenoid valve is a solenoid valve for a fuel cell system used in the fuel cell system. The electromagnetic means includes a plunger that is connected to the valve body by a predetermined amount so as to be relatively displaceable in the valve opening / closing direction, an electromagnetic coil that urges the plunger in the valve opening direction by excitation, and the plunger in the valve closing direction. A valve spring for biasing the valve body in a valve opening direction, and further opening the valve by a kick method. The solenoid valve described.