A BLEED TYPE VARIABLE FORCE SOLENOID VALVE

摘要

A bleed type variable force solenoid valve is provided to prevent an erroneous operation of the valve by providing an internal pressure forming unit on one side of a discharge port. A bleed type variable force solenoid valve includes a drive section(1) and a valve section(3). In the drive section, a coil(13) is wound on a bobbin(15) in the interior of a housing(11). In the interior of the bobbin, an armature(17) and an armature spindle(19) operated by the electromagnetic force of the coil is axially provided so that the resilient force of an adjusting spring(23) mounted by an adjusting screw(21) can be applied to the armature and the armature spindle. An orifice is formed on one side of a discharge port of a flange as an internal pressure forming unit for forming an internal pressure in the interior of the discharge port so that the internal pressure is applied to the rear surface of a piston ring.