| 摘要 |
<p>A rotor of an electric motor, including a rotor core (16) having a plurality of magnet-retaining apertures (14), a plurality of permanent magnets (18) individually received and retained in the magnet-retaining apertures (14) of the rotor core, and a resinous filler filling (22) a gap defined between each magnet-retaining aperture (14) and each permanent magnet (18) and fixing the permanent magnets (18) to the magnet-retaining apertures (14). The rotor also includes an engaging projection (30) provided in the rotor core, the engaging projection tightly engaged with each of the permanent magnets (18) received in the magnet-retaining apertures (14) and temporarily holding each permanent magnet (18) at a predetermined position in a corresponding magnet-retaining aperture (14), in an unfinished state of the rotor where the resinous filler (22) is not arranged in the gap.
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