| 摘要 |
The present invention can remove air in a solenoid without causing an error of biasing force of an adjusting spring adjusted by an adjusting screw. In an adjusting screw structure (15) of an oil immersed solenoid (11) in which: a movable core (14) is provided in a first space (22) of a main body case (17) so as to be movable in an axial direction; the movable core (14) is biased by an adjusting spring (26) in a direction in which the movable core (14) is suctioned by a fixed magnetic pole portion 13; and an adjusting screw (27) capable of adjusting biasing force of the adjusting spring (26) is included, the adjusting screw structure (15) includes an air-bleeding plug (32) configured to be detachably attached to and seal an opening end portion (30) of a rear case (25), the opening end portion being communicated with the first space (22), and the air-bleeding plug (32) includes an internal screw portion (33) with which the adjusting screw (27) threadedly engages and a detachable mechanism (40) configured to be able to attach the air-bleeding plug (32) to the opening end portion (30) of the case such that the air-bleeding plug (32) is located at a predetermined attachment position in a movement direction of the adjusting screw (27). |
