MAGNET FIXING STRUCTURE OF PERMANENT MAGNET SURFACE PASTING TYPE MOTOR AND DESIGN METHOD OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a SPM motor that improves safety by preventing sudden lock of the motor.;SOLUTION: A magnet 103 is inserted into a magnet insertion groove 102 of a rotor 101 and is bonded with an adhesive. When a radial direction length between a radial direction position where a point C is positioned and a radial direction position where a point D is positioned is denoted as a length La and a radial direction length between a radial direction position where the point C is positioned and a radial direction position where a point E is positioned is denoted as a length Lb, lengths of groove side surfaces 102a, 102b are specified with respect to lengths of magnet side surfaces 103a, 103b so as to satisfy a condition, the length Lathe length Lb.;COPYRIGHT: (C)2015,JPO&INPIT