Electromagnetic actuator

An electromagnetic actuator comprising:

• a stator;
• a coil for excitation;
• a mover which moves in a predetermined axial direction to move to an actuation position due to energization of the coil and return to a rest position due to non-energization of the coil;
• a shaft of a single outer diameter which is fixed to the mover and exerts a driving force to outside;
• and
• a buffer unit which is held at the mover and positions the mover at the rest position while absorbing impact when the mover returns to the rest position, wherein
• the buffer unit comprises:
• a rod which abuts against the stator at the rest position;
• a biasing member which biases the rod toward the stator;
• and a buffer member which is interposed between the rod and the shaft, and
• the mover comprises a restricting part, a fitting hole, a guide inner wall surface and a receiving part,
• the restricting part is crimped to restrict the rod from coming off,
• the shaft is fitted into the fitting hole,
• wherein the guide inner wall surface guides the rod slidably in the axial direction, and the guide inner wall surface is formed to have a diameter larger than a diameter of the fitting hole,
• wherein the receiving part is formed in an annular shape around the fitting hole and receives one end part of the biasing member in the axial direction, and the receiving part is formed to have an outer diameter larger than a diameter of the fitting hole.