Patent ID: 7990000

Claim:
A small diameter stepping motor comprising two stator units which are coupled to each other and which each have an opening portion and each include a bobbin formed of an insulating material, the bobbin comprising: a circular hollow cylinder portion having a winding wound therearound; two flanges disposed respectively at both ends of the cylinder portion; and a terminal structure disposed at one flange of the two flanges, radially projecting out through the opening portion, and comprising at least two terminal blocks and a pair of electrical contact members at which lead-out lines of the winding are terminated, wherein the at least two terminal blocks are shifted in position from each other in a circumferential direction about an axis of the cylinder portion and extend axially outwardly, and the terminal blocks of one bobbin of the two bobbins intermesh with the terminal blocks of the other bobbin of the two bobbins such that the terminal blocks of the one bobbin extend in an axial direction from a position adjacent to the other bobbin to a position above the winding wound on the other bobbin and vice versa, wherein the electrical contact members are provided on the terminal blocks of the one bobbin of the two bobbins at positions above the winding wound on the other bobbin of the two bobbins and are provided on the terminal blocks of the other bobbin of the two bobbins at positions above the winding wound on the one bobbin of the two bobbins, and wherein the pair of electrical contact members of the one bobbin and the pair of electrical contact members of the other bobbin are located at positions shifted from each other in the circumferential direction such that the electrical contact members of each bobbin are not aligned in the axial direction.