ELECTROMAGNET FOR SOLENOID VALVE AND PRODUCTION METHOD OF THE SAME.

摘要

This invention relates to an electromagnet (A) that can be used for a solenoid valve. A fitting portion (12) for a valve main body (B) is disposed at one of the ends of a pipe body (6) and a cap (E) is put onto the other end. A movable core (24) is disposed movably inside the pipe body (6) and a coil (D) is put onto the outer peripheral side of the pipe body (6). The cap (E) and the pipe body (6) are connected to each other by screws (18, 39) formed on their inner and outer peripheral opposed surfaces. When the electromagnet (A) is fitted to the valve main body (B), the pipe body (6) is first fitted to the valve main body (B), the coil (D) is then put over the pipe body (6) and furthermore, the cap (E) is fitted by screwing to the pipe body (6). In this manner the coil (D) can be fixed by the cap (E). An air vent hole (41) opening to the inner peripheral surface of the cap (E) is formed on the cap (E). When it is desired to discharge air inside the pipe body (6), the cap (E) is rotated to place the air vent hole (41) at its highest position. Then, the air can be discharged through the vent hole (41).