Patent ID: 7750514
Filing Date: 2010-07-06
Classification: H01F,H02K

Abstract:
1. A stator of a reciprocating motor comprising: a stator including inner and outer lamination assemblies formed as a plurality of monolithically formed lamination sheets stacked as a cylindrical shape or a circular arc shape; and a mover inserted into an air gap between the inner and outer lamination assemblies and linearly reciprocal in the air gap, wherein the monolithically formed lamination sheets constituting the inner or outer lamination assembly are thicker at an outer circumference side of the inner or outer lamination assembly than at an inner circumference side thereof, and wherein each monolithically formed lamination sheet of the plurality of monolithically formed lamination sheets is composed of a plurality of first step portions formed at one side of the monolithically formed lamination sheet, each of the plurality of first step portions formed between two non-folded step surfaces of a stair shape, the monolithically formed lamination sheet having different thicknesses at the step surfaces.