| 摘要 |
Disclosed herein is a rotor assembly, including: a rotor portion provided with an insertion hole into which a rotating shaft is inserted; and a magnet inserted into an embedded hole radially formed at a cross section axially vertical to the shaft of the rotor portion outwardly from the rotor portion, wherein the magnet is formed so that a width in a direction vertical to a radial direction of the magnet gradually increases from the shaft radially outwardly from the rotor portion. According to the preferred embodiment of the present invention, more magnets can be arranged in the same area, the freedom of design can be improved, and the flux amount can be increased, by the structural change of the magnet embedded in the rotor portion.
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