Manufacturing method for slotless stator, and slotless stator

摘要

To obviate the need for a special fixation mechanism or adhesive, to thereby simplify the assembly of a slotless stator, two divided cores which complete a stator core having no slots by combining each part into a cylindrical shape, are assembled into a cylindrical shape so as to contain a stator winding having an outer diameter larger than an inner diameter of the stator core in the natural condition. By so doing, the stator winding is assembled inside the stator core in a radially inward compressed condition. At this time, since the stator winding functions as a spring pressing the inside of the stator core so as to expand in the normal direction (the radial outward direction), this is mechanically secured by the resilient force at that time to the inner periphery of the stator core. Hence there is no longer the need for a special fixation mechanism or adhesive.