Permanent magnet rotor

摘要

A permanent magnet rotor has a rotor core positioned about a rotation shaft. The permanent magnet rotor also has permanent magnet embedment slots located at equally spaced positions from the rotation shaft, with permanent magnets inserted into each of the respective permanent magnet embedment slots. The permanent magnet embedment slots each have both a magnet storing portion, and a buffer and other members storing portion which extends to the magnet storing portion. Once a permanent magnet is stored inside the magnet storing portion, a buffer member, and a pushing member are used to secure the permanent magnet inside the rotor core.

主权项

1. A permanent magnet rotor, comprising:
a rotor core of a laminated structure about a rotation shaft; a plurality of permanent magnet embedment slots provided to the rotor core at equally spaced positions; and permanent magnets inserted into the respective permanent magnet embedment slots, wherein: each of the permanent magnet embedment slots has a magnet storing portion, a first step, and a buffer and other members storing portion extending radially inwardly from the magnet storing portion and the first step; the buffer and other members storing portion comprising a first area and a second area separated by a second step, the second area contiguous with and external to the first area, wherein one permanent magnet is stored in the magnet storing portion, and a buffer member and a pushing member used to fix the permanent magnet are respectively stored in the first area and the second area, and wherein the buffer and other members storing portion is formed of a first area having a first width narrower than the magnet storing portion and a second area having a second width narrower than the first width via a step.