ADJUSTING SCREW STRUCTURE FOR OIL IMMERSED SOLENOID AND OIL IMMERSED SOLENOID WITH SAME

摘要

An adjusting screw structure for an oil immersed solenoid, wherein air in the solenoid can be removed without causing error in pressing force of an adjusting spring adjusted by an adjusting screw. An adjusting screw structure (15) for an oil immersed solenoid (11) has a movable core (14) which is axially movably mounted in a first space (22) in a body case (17) and which is pressed by an adjusting spring (26) in the direction in which the movable core (14) is attracted by a fixed magnetic pole section (13), and the adjusting screw structure (15) also has an adjusting screw (27) which is pressed by an adjusting spring (26) and which can adjust pressing force of the adjusting spring (26).  The adjusting screw structure (15) is also provided with an air release plug (32) removably mounted in a sealed matter to an opening end (30) of a rear case (25) communicating with the first space (22).  The air release plug (32) comprises a female screw thread section (33) with which the adjusting screw (27) engages, and also comprises a mounting and dismounting mechanism (40) capable of mounting the air release plug (32) to the opening end (30) of the case at a predetermined mounting position in the direction of movement of the adjusting screw (27).