Patent ID: 7913827

Claim:
An electromagnetic actuator, comprising: a supporting member, shaped in a disc form including a through hole that penetrates a center thereof, that supports an electromagnetic coil around which a wire is wound; a moving member positioned facing the supporting member so as to move forward and backward; and an actuating force transmitting member that transmits moving force of the moving member to a member to be actuated as an actuating force, wherein the actuating force transmitting member includes a cylindrical portion provided radially inward from the supporting member and a disc shaped portion provided at an end of the cylindrical portion, such that the disc shaped portion is axially disposed between the supporting member and the member to be actuated, the moving member is moved towards the supporting member by magnetic force generated by applying an electric current to the electromagnetic coil to apply the actuating force to the member to be actuated via the actuating force transmitting member, the electromagnetic coil includes a plurality of electromagnetic coils provided at the supporting member, and axial centers of the plurality of electromagnetic coils are arranged radially from a center of the supporting member at a predetermined radius.