VARIABLE FORCE MOTOR AND SOLENOID VALVE WITH SAID VARIABLE FORCE MOTOR

摘要

PURPOSE: To eliminate the hysteresis of the position of an armature and a valve by restraining the slide friction of a ball-armature to a minimum. CONSTITUTION: A spring means 38 is arranged to engage with the ball-armature 32 of an electromagnetic solenoid valve and to energize the ball-armature 32 away from a pole piece 20 and has the spring force equal to an electromagnetic attraction characteristic. An air gap is provided between the pole piece 20 and a base 30 facing thereto.