CYLINDRICAL COMMUTATOR AND METHOD OF MANUFACTURING THE SAME

摘要

PURPOSE: A cylindrical commutator and a manufacturing method thereof are provided to fixedly hold the commutator using a mold resin and achieve a high forming precision. CONSTITUTION: A cylindrical commutator comprises a plurality of mutually insulated segments(9) arranged at equal intervals on the external periphery of a cylindrical surface, hooks(7) for line connection extending from one end of respective segments, land and grooves parallel with an axial core formed on the internal periphery of the segments, anchors(11) extending from the edges of the land over substantially the total length of the segments, a mold resin into which the anchors are to be embedded to fix the segments in a cylindrical shape, and undercuts formed on the mold resin for separating the segments.