Rotor of rotary electric machine and method of manufacturing the same
AssigneeMitsubishi Electric Corporation
InventorsKengo FUJIMOTO, Yoshihito Asao, Satoru Akutsu, Kazuhisa Takashima
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Abstract
In a rotor of a permanent magnet rotary electric machine, a bonding portion between each of segment shaped magnets and an outer circumference face of a rotor core is provided in axial symmetry with respect to the rotor axial center and has a bonding area equal to or larger than a half of a contact area between each of the segment shaped magnets and the outer circumference face of the rotor core; and a biasing force is applied to an outer circumference face of the segment shaped magnets by a ring.
Claims12
A rotor of a rotary electric machine, the rotary electric machine including:
- a rotor core fitted to an outer circumference of a rotational shaft;
- a rotor formed by arranging and bonding a plurality of segment shaped magnets each having an arbitrary gap between poles on an outer circumference portion of the rotor core by adhesive;
- a bracket rotatably supporting a rotational shaft of the rotor via bearings;
- and
- a stator fixed to the bracket and having a stator core and stator windings, the rotor of the rotary electric machine comprising:
- a bonding portion formed by the adhesive between each of the segment shaped magnets of the rotor and the outer circumference face of the rotor core, the bonding portion being provided in axial symmetry with respect to the rotor axial center and having a bonding area equal to or larger than a half of a contact area between each of the segment shaped magnets and the outer circumference face of the rotor core;
- and
- a nonmagnetic ring fitted to an outer circumference portion of the segment shaped magnets, the segment shaped magnets being fixed by being biased by the ring to the rotor core side.
Dependencies are inferred from the claim text.