Electromagnetic valve

An electromagnetic valve, comprising:

• a body including passages;
• a valve member configured to switch the passages;
• and
• a solenoid unit configured to move the valve member, wherein
• the solenoid unit includes:
• a coil;
• a tubular bobbin about which the coil is wound;
• a fixed iron core arranged on an inner side of the bobbin;
• a movable iron core configured to be attracted to the fixed iron core by attractive force that is generated in the fixed iron core when power is supplied to the coil;
• an urging spring configured to urge the movable iron core away from the fixed iron core;
• a magnetic frame located on an outer side of the bobbin, the magnetic frame cooperating with the fixed iron core and the movable iron core so as to generate a magnetic circuit around the coil;
• and
• a molded plastic part that integrates the magnetic frame, the bobbin, and the coil together,
• the magnetic frame includes:
• a frame end wall that is adjacent to the bobbin in an axial direction of the bobbin;
• two frame arms located on the outer side of the bobbin, the two frame arms extending in an axial direction of the bobbin from an outer periphery of the frame end wall;
• and
• an internal thread hole extending through the frame end wall, the fixed iron core being threaded to the internal thread hole,
• a tubular projection protrudes from an end face of the frame end wall that is on a side opposite to the bobbin, the projection forming part of the internal thread hole,
• the molded plastic part includes:
• a molded end wall that covers the frame end wall;
• and
• a molded peripheral wall that extends from an outer periphery of the molded end wall along the two frame arms so as to integrate the two frame arms, the bobbin, and the coil together,
• the molded end wall includes a connecting hole that is continuous with the internal thread hole, and
• the connecting hole includes a groove in an inner circumferential surface, the groove extending along an outer circumferential surface of the projection.