Patent ID: 8405276
Filing Date: 2013-03-26
Classification: H02K

Abstract:
1. A motor comprising: a stator with a plurality of magnetic poles circumferentially arranged at first spaced intervals; a rotor rotatably arranged in a position opposing to the stator; and magnets arranged at second spaced intervals circumferentially on a surface of the rotor, wherein the stator is formed by laminating plate materials, a plurality of laminated plate materials at least including outermost layers of a laminated body thereof are bent in a direction substantially parallel to the magnet in order to form extended portions, and when a magnet opposed area of a pole tip portion being closest to a magnet including the extended portion is S, and a smallest sectional area of the plurality of magnetic poles is A, then area ratio (S/A) satisfies a requirement of 4.8>(S/A).