초록 ▼

This invention concerns an improvement for the structure of a rotor attachment in a permanent magnet type synchronous motor. This invention can effectively prevent axial displacement or peeling off of the magnets which might otherwise be caused by insufficient adhesion or deterioration of adhesives

This invention concerns an improvement for the structure of a rotor attachment in a permanent magnet type synchronous motor. This invention can effectively prevent axial displacement or peeling off of the magnets which might otherwise be caused by insufficient adhesion or deterioration of adhesives by the unique structure of attaching magnets to the rotor shaft as side plates having grooves are fixed to both sides of magnets adhered to a shaft to engage with at least one end face of magnets and the outer peripheries of the side plates and the magnets are wound with non-magnetic fibers for securing, thereby greatly enhancing the reliability of the motor.

대표청구항 ▼

A rotor of a permanent magnet type synchronous motor of the type that a plural number of columnar magnets having sectorial cross section are adhered to a rotor shaft on the outer periphery thereof, which is characterized in that end surfaces of at least one of said magnets are made to project in axi

A rotor of a permanent magnet type synchronous motor of the type that a plural number of columnar magnets having sectorial cross section are adhered to a rotor shaft on the outer periphery thereof, which is characterized in that end surfaces of at least one of said magnets are made to project in axial direction, that side plates of non-magnetic material having grooves of the same configuration as the section of said magnets are placed on both sides of said magnets so as to engage the grooves with the magnet end surfaces facing thereto and are fixed to said rotor shaft by means which can prevent circumferential displacement, and that the outer periphery of at least said magnets is wound with non-magnetic fibers and secured with resin.