| 摘要 |
<p>To provide an electric motor which is capable of reducing the size and manufacturing costs thereof, and enhancing the degree of freedom in design thereof. An electric motor 1 is comprised a first structure 4 including a magnetic pole row which is formed by a predetermined plurality of magnetic poles 4a arranged in a predetermined direction and having each two adjacent magnetic poles 4a so disposed as to have polarities different from each other, a second structure 3 including an armature row which is disposed in a manner opposed to the magnetic pole row, for generating moving magnetic fields moving in the predetermined direction between the armature row and the magnetic pole row by a predetermined plurality of armature magnetic poles generated at the armatures 3c to 3e in accordance with supply of electric power thereto, and a third structure 5 including a soft magnetic material element row which is formed by a predetermined plurality of soft magnetic material elements 5a arranged in the predetermined direction in a manner spaced from each other, and is disposed such that the soft magnetic material element row is positioned between the magnetic pole row and the armature row. A ratio between the number of the armature magnetic poles, the number of the magnetic poles 4a, and the number of the soft magnetic material elements 5a is set to 1 : m : (1+m)/2 (m ‰ 1.0).</p> |
