ACTUATOR DEVICE USED FOR FUEL INJECTION DEVICE

PROBLEM TO BE SOLVED: To provide an actuator device provided with an inner side core capable of maintaining satisfactory fitting of a collar and a laminated core region irrespective of fluctuation of nominal thickness of a thin plate. SOLUTION: This actuator device used for the fuel injection device of an internal combustion engine is provided with the collar 48, the inner side core 40 provided with the core region 44 having a plurality of thin plates 140 laminated along a first laminated shaft LA, a first annular outer side magnetic pole 42 for receiving at least a part of the core region 44, and an electromagnetic winding 52 received into a first volume part partitioned between the first outer side magnetic pole 42 and the core region 44. The collar 48 is formed by at least two collar parts 48a, 48b, and these collar parts 48a, 48b can be mutually adjusted to change an interval between them and store the core regions 44 having different diameter. COPYRIGHT: (C)2006,JPO&NCIPI