| abstract |
(57) [Problem] To provide an embedded magnet type rotor capable of improving magnetic characteristics and reliability. SOLUTION: A laminated iron core 4 which is formed in a cylindrical shape by laminating plate-shaped magnetic members and is fitted to a rotor shaft 11, and a laminated iron core 4 A plurality of holes 5 formed in the end surface at predetermined intervals in the circumferential direction and penetrating in the axial direction in a rectangular cross section; a permanent magnet 10 having a rectangular cross section to be inserted into each of the holes 5; An injection hole 6 penetrating along the rotor shaft side of the hole 5 and communicating with the hole 5 via a communication hole 8 at a position corresponding to each permanent magnet 10; and a rotor of each hole 5 An injection groove 9 formed to extend from the communication hole 8 on the shaft side to both ends in the circumferential direction; A resin member 12 injected through the injection hole 6, the communication hole 8, and the injection groove 9, and loaded so as to leave a partial space 13 on the rotor shaft side of the permanent magnet 10. |