Patent ID: 6238014
Filing Date: 2001-05-29
Classification: B60T

Abstract:
An electromagnetic valve comprising:a valve housing having a valve seat;a valve body contained in the valve housing such that the valve body is positioned opposite to the valve seat so that the valve body can be seated on the valve seat, the valve body is formed with a plurality of grooves for communicating upper and lower edges with each other on an outer peripheral surface thereof;a valve spring for urging the valve body in the direction of separating the valve body from the valve seat;a fixed core coupled to one end of the valve housing;a moving core which is longitudinally movable with respect to the fixed core and used for seating the valve body on the valve seat when moved in a first direction;a coil for moving the moving core in the first direction when excited;a push bar positioned to push the valve body toward the valve seat and a relief spring for urging the push bar in the first direction toward the valve body, the push bar and the relief spring being contained in a guide hole formed in a central portion of the moving core; anda stopper provided within the guide hole of the moving core and defining a limit to which the push bar is moved in the first direction by the relief spring to engage the valve body so that the valve body is held open by the valve spring when the moving core is moved in a second direction opposite to the first direction and for allowing the valve body to be closed by the push bar and relief spring when the moving core is moved in the first direction.