Rotary solenoid

A rotary solenoid comprising:

• a fixed body portion having a casing in which a pair of bearing portions positioned on front and rear sides are provided;
• and
• a movable body portion having a rotation shaft rotatably supported by the pair of bearing portions,
• wherein the fixed body portion includes:
• the casing formed of a magnetic material;
• and
• an air-cored coil of which the surface orthogonal to an axial direction of the rotation shaft is fixed to an inner surface of the casing,
• wherein the movable body portion includes:
• a rotor yoke having one end fixed to the rotation shaft;
• and
• a magnet portion having a pair of magnets fixed to an opposing surface positioned on the other end side of the rotor yoke serving as a surface opposing the air-cored coil and disposed along a rotation direction of the opposing surface,
• wherein the fixed body portion and the movable body portion share a pair of restricting stopper mechanisms that restrict a rotation angle range of the movable body portion by making contact with each other,
• wherein the casing shares a self-holding mechanism that attracts the movable body portion at a first position and a second position at both ends of the rotation angle range to hold the position of the movable body portion,
• wherein the self-holding mechanism includes an attracting piece portion that protrudes from a portion of the casing, and
• wherein the magnet portion and the attracting piece portion are disposed in such a positional relation that the magnet and the attracting piece portion do not overlap each other in the axial direction or the rotation direction.