Patent ID: 7994680

Claim:
A motor comprising: an output shaft rotatably provided; a rotor fixed to the output shaft and rotatable with the output shaft; a stator formed by a lamination of plurality of electrical steel sheets made by a magnetic material, the electrical steel sheets being punched by means of a press working; a coil wound at the stator; and a case accommodating the stator and the rotor and including a holder for holding the stator; the electrical steel sheets arranged at one end of the stator in a lamination direction thereof and at the other end of the stator in the lamination direction thereof respectively, each of the electrical steel sheets including surfaces each at which a shear droop is formed; wherein the electrical sheets include first electrical steel sheets arranged at the one end of the stator and second electrical steel sheets arranged at the other end of the stator, wherein outer peripheral surfaces of the first electrical sheets include shear droops forming burrs extending in a direction away from the second electrical sheets, and outer peripheral surfaces of the second electrical sheets include shear droops forming burrs extending in a direction away from the first electrical sheets, and wherein inner peripheral surfaces of the first electrical sheets include shear droops forming burrs extending in a direction toward the second electrical sheets, and outer peripheral surfaces of the second electrical sheets include shear droops forming burrs extending in a direction toward the first electrical sheets.