PERMANENT MAGNET ROTOR

摘要

A permanent magnet rotor for a motor, the permanent magnet rotor including an iron core and a permanent magnet. The iron core includes an annular ring having a central axial bore and a plurality of magnetic induction blocks protruding outward from an outer side of the annular ring. Between two adjacent magnetic induction blocks form a radial recess for mounting the permanent magnets. The magnetic induction blocks at both sides of an opening of the radial recess protrude with a hook block. The section of an outer side surface of the magnetic induction blocks is a circular-arc line and the outer side surface employs a point with a distance deviating from the center of the central axial bore as a center of circle.

主权项

1. A permanent magnet rotor of a motor, the permanent magnet rotor comprising an iron core and a permanent magnet, wherein
the iron core comprises an annular ring having a central axial bore and a plurality of magnetic induction blocks protruding outward from an outer side of the annular ring; a radial recess is formed by two opposing side surfaces of two adjacent magnetic induction blocks, respectively, and a portion of the outer side of the annular ring is surrounded by the two opposing side surfaces; the permanent magnet is mounted in the radial recess; the portion of the outer side of the annular ring forms an innermost end of the radial recess; the plurality of magnetic induction blocks at both sides of an opening of the radial recess protrude with a hook block; a section of an outer side surface of the plurality of magnetic induction blocks is a circular-arc line and the outer side surface employs a point with a distance deviating from the center of the central axial bore as a center of circle; and a ratio of the width of the permanent magnet to the maximum external diameter of the iron core is 0.09-0.11.