Patent ID: 8169116
Filing Date: 2012-05-01
Classification: H02K,H02P

Abstract:
1. An electric motor comprising: a first structure including a magnetic pole row, said magnetic pole row being formed by a predetermined plurality of magnetic poles arranged in a predetermined direction, and having each two adjacent magnetic poles so disposed as to have polarities different from each other; a second structure including an armature row, said armature row being formed by a plurality of armatures arranged in the predetermined direction, and being disposed in a manner opposed to said magnetic pole row, for generating moving magnetic fields moving in the predetermined direction between said armature row and said magnetic pole row by a predetermined plurality of armature magnetic poles generated at said plurality of armatures in accordance with supply of electric power thereto; and a third structure including a soft magnetic material element row, said soft magnetic material element row being formed by a predetermined plurality of soft magnetic material elements arranged in the predetermined direction in a manner spaced from each other, and being disposed such that said soft magnetic material element row is positioned between said magnetic pole row and said armature row, wherein a ratio between a number of the armature magnetic poles, a number of the magnetic poles, and a number of said soft magnetic material elements, within a predetermined section along the predetermined direction is set to 1:m:(1+m)/2 (m≠1.0).