SURFACE MAGNET TYPE MOTOR, SURFACE MAGNET TYPE MOTOR MANUFACTURING METHOD, AND INTERNAL COMBUSTION ENGINE USING THE SURFACE MAGNET TYPE MOTOR

摘要

A surface magnet type motor (10) having a magnet (16) at a surface of a rotor (15) includes an anti-scattering tube (17) formed in a cylindrical configuration longer in length than the magnet (16) of the rotor (15) in the axial direction, having the magnet press-fitted inside to prevent scattering of the magnet. A stress alleviation portion is provided to alleviate stress generated at an end of the magnet (16) press-fitted into the anti-scattering tube (17).