Embedded magnet type rotor, embedded magnet type rotary electric machine, and a manufacturing method of the embedded magnet type rotor

Permanent magnets (110) and rotor core (111) and the installed on both end surfaces of the annular body of the magnet and the core formed by annularly arranged the end plates (114), a non-magnetic annular disc (112) , the annular circular plate and the inner circumference contact with the annular circular plate disposed of (112) (112) than the linear expansion coefficient smaller ring member (113) is formed integrally with shrink fitting, the end plate ( central hole (for the same linear expansion coefficient as the inner circumferential side of the hollow portion to the ring member of the ring that is a 118) member (113) (113) shaft 114) (109) is formed is pressed.