Wound core, electromagnetic component and manufacturing method therefor, and electromagnetic equipment

A wound core formed by winding a magnetic thin band in the axial direction,nwherein a cutout portion is formed from place to place on an end face of the thin band in the axial direction and the cutout portions are arranged in random directions in the direction of the radius of the wound core, andwherein the wound core having a different shape from a cylindrical shape wound core is obtained by pressing the cylindrical shape wound core placed in core placement cavities respectively formed in dies and by annealing the wound core being kept housed in the dies.

An electromagnetic component formed by winding a magnetic thin band in the axial direction to form a wound core and winding a coil on the circumference of the wound core in the radial direction with an insulator in between,nwherein a cutout portion is formed from place to place on an end face of the thin band in the direction of the axis of the wound core and the cutout portions are arranged in random directions in the direction of the radius of the core, andwherein the electromagnetic component is formed by pressing the wound core formed in a cylindrical shape between dies having a trapezoidal space and annealing the wound core together with dies.

An electromagnetic apparatus configured by:nwinding a magnetic thin band in the axial direction to form a wound core in which a cutout portion is formed from place to place on an end face of the thin band in the axial direction and the cutout portions are arranged in random directions in the radial direction;winding a coil in the direction of the circumference of the wound core to obtain a slot;forming the end face of the slot in the axial direction in a trapezoidal shape;arranging a plurality of the trapezoidal slots so that the upper bases thereof adjoin to one another and the lower bases thereof adjoin to one another with an insulator in between to form a doughnut shape;molding the doughnut to form a stator;rotatably holding a rotating shaft in the center of the stator; andopposing a rotor fixed on the rotating shaft and having magnets to a plane of the stator orthogonal to the rotating shaft,wherein the wound core having the end face in the axial direction formed in the trapezoidal shape is formed by pressing the wound core formed in a cylindrical shape between dies having a trapezoidal space and annealing the wound core together with dies.