Rotor structure

摘要

A rotor (4; 53) includes a rotary shaft (3; 52), a rib (5) provided on the rotary shaft (3; 52), and a disc-form holding member (2 ;51). The holding member (2 ;51) is joined to an axial end face of the rib (5). The holding member (2 ;51) is thereby coupled with the rotary shaft (3; 52). The holding member (2 ;51) is provided with permanent magnets (1) arranged in a circumferential direction. A stator (S; 57) is confronted with the rotor (4; 53) along a central axis of the rotor (4; 53).