The magnetization device and axial which creates the permanent magnet and its magnet which were created by the magnetization manner and the same magnetization manner of the permanent magnet for the axial direction void die motor direction void die motor which has the same magnet.

摘要

PROBLEM TO BE SOLVED: To obtain, using a simplified method, a high-performance magnet having little non-magnetized portion reduced as much as possible and to employ a magnetization coil indicated by a heavy line, in order to provide a magnetizing apparatus for preventing the puncture of a yoke, and also to provide a high- performance axial direction gap type motor including such magnet.;SOLUTION: A thin ring type axial direction gap permanent magnet (M) has four or more magnetic poles, which include rare earth metal and are arranged alternately in N and S poles in the outside diameter of 14 mm or less and the inside diameter of 4 mm or more. It if subjected to magnetization carried out in a manner such that the magnet is deviated to provide a cross-section of the non-magnetized portion of 8% or less for the total cross-section of magnet and the magnetization yokes (1, 11) are also deviated.;COPYRIGHT: (C)2002,JPO