| 摘要 |
PURPOSE:To roughly uniformize the magentic flux density in the gap section by forming a gear section in a stator core in such a manner that the distance of a gap facing the circumferential center thereof reaches its specified maximum while that of a gap facing the both circumferential end sections thereof reaches its specified minimum. CONSTITUTION:The inter surface of a gear section 1b is formed into a roughly circular arc-shaped concave section in such a manner that the distance of a gap 3 fromed by the inner surface at the circumferential center thereof of a stator core 1 and the outer surface 2a of a rotor core 2 reaches its maximum while that of a gap formed by the inner surface 1e at the circumferential end sections thereof and the outer surface 2a reaches its specified minimum. Accordingly, the magnetic flux density of the gap can be roughly uniformized thereby reducing possible abnormality of the motor. |
