PERMANENT MAGNET ROTOR

摘要

A rotor for a brushless motor includes a shaft, a rotor core and a number of permanent magnets. The rotor core includes inner and outer annular portions. The inner annular portion has a central hole for receiving the shaft. The outer annular portion includes a number of sector segments arranged in a ring, with adjacent sector segments defining a slot there between for receiving a corresponding permanent magnet. Radially outer ends of adjacent sector segments are interconnected by a connector. The sector segments include first sector segments and second sector segments arranged alternately. The first sector segments are separated from the inner annular portion. The second sector segments are each connected to the inner annular portion by connecting arms.

主权项

1. A rotor for an electric motor, comprising:
a shaft; a rotor core fixed to the shaft; and a plurality of permanent magnets fixed to the rotor core, wherein the rotor core comprises: an inner annular portion defining a central hole for receiving the shaft; and an outer annular portion comprising a plurality of sector segments arranged in a ring, the sector segments comprising a plurality of first sector segments and a plurality of second sector segments, inner radial ends of the first sector segments being separated from the inner annular portion, inner radial ends of the second sector segments being connected to the inner annular portion by respective connecting arms, and adjacent sector segments define a magnet mounting position there between in which the permanent magnets are disposed.