Rotor for rotary electrical device

摘要

A rotor (4) for a rotary electrical device to be arranged to face to a stator (5), comprises a rotor iron core (4a) extending axially and including a plurality of slots (6) arranged with a predetermined circumferential interval, a rotor coil (1) contained by the slots (6), a coil support member (13, 13b) of electrically insulating property arranged between parts of the rotor coil (1) at an axial end of the rotor coil (1), and a retaining ring (3) covering the coil support member (13, 13b) and the axial end of the rotor coil (1), the coil support member (13, 13a) has two fitted portions (15, 16) and a connecting portion (12) connecting the fitted portions (15, 16) to each other to form H-shape of cross section and to form a space (11, 14) between the rotor coil (1) and each of opposite sides of the connecting portion (12), and the coil support member (13, 13b) further has a communicating path (120, 120A) communicating to the spaces (11, 14).