ROTOR FOR A PERMANENT MAGNET ELECTRIC MACHINE AND USE THEREOF

摘要

A rotor (2) for a permanent magent brushless DC machine, which rotor is arranged concentrically about a rotor axis (1′) and has a passage opening (8) running along the rotor axis (1′) for accommodating a shaft (22). Permanent magnets (3) and the pole segments (4) extend along the rotor axis (1′), with the permanent magnets (3) and the pole segments (4) arranged alternately around the rotor axix (1′) in the circumferential direction. The rotor further has a cross-sectional area (14) of at least one pole segment (4) in at least a first pole segment region (5), is asymmetrical with at least one shaped portion (6) arranged in a radially outer region, with respect to therotor axis (1′), of the pole segment (4). The shaped portion (6) extends substantially in a circumferential direction (1″). Furthermore, the invention describes the use of the rotor according to the invention.

主权项

1. A rotor for a permanent magnet electric machine, in in the form of a brushless DC machine, which rotor is arranged concentrically around a rotor axis and has a through-opening extending along the rotor axis for receiving a shaft, comprising, permanent magnets and pole segments extending along the rotor axis, wherein the permanent magnets and the pole segments are arranged alternately in a circumferential direction around the rotor axis, in that a cross-sectional area of at least one of the pole segments is formed in at least one first pole segment region so as to be asymmetrical with at least one first shaped portion arranged in a radially outer region with respect to the rotor axis of the pole segment, wherein the first shaped portion extends substantially in the circumferential direction.