COIL BOBBIN FIXING STRUCTURE FOR LAYER-BUILT STEPPING MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a coil bobbin fixing structure for a layer-built stepping motor, by which an open circuit in a winding end which is caused by the loosening and minute displacement of a component can be avoided. ;SOLUTION: A coil bobbin 17 is composed of a pair of annular side plates 17a and 17b which are in parallel with each other and a cylindrical body part with which both the side plates 17a and 17b are linked coaxially with each other. The side plates 17a and 17b and the cylindrical body part are integrally molded and a terminal attaching part 17c is made to protrude from one of the side plates outward in a radial direction. When respective stators A and B are piled, the respective terminal attaching parts 17c are so assembled as to be adjacent to each other. Boss parts 17h are made to protrude from the respective terminal attaching parts 17c in axial directions opposite to each other. Linking protrusions 17i are provided on the side surfaces of the respective terminal attaching parts 17c which are not adjacent to each other and tapered parts are provided on the side surfaces of the respective terminal attaching parts 17c which are adjacent to each other.;COPYRIGHT: (C)1998,JPO